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    Cng Ty Samsung Trn trng gi n bn cun sch ny.

    Phin bn ebook ny c thc hin theo bn quyn xut bn v pht hnh n bn

    ting Vit ca cng ty First News - Tr Vit vi s ti tr c quyn ca cng ty

    TNHH Samsung Electronics Vit Nam. Tc phm ny khng c chuyn dngsang bt k hnh thc no hay s dng cho bt k mc ch thng mi no.

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    Original title:

    Even Buffett isn't Perfect: What You Can - and Cant - Learn from

    the Worlds Greatest Investor

    by Vahan Janjigian

    Copyright Vahan Janjigian, 2008.

    Vietnamese Edition 2010 by First News Tri Viet.

    This edition is published by arrangement with Portfolio,

    a member of Penguin Group ( USA) Inc.

    All rights reserved including the right of reproduction in whole orin part in any form.

    EVEN BUFFETT ISN'T PERFECT NGAY C BUFFETT CNG KHNG HON HO

    Cng ty First News Tr Vit gi bn quyn xut bn v pht hnh nbn ting Vit trn ton th gii theo hp ng chuyn giao bn quynvi NXB Portfolio, thuc Penguin Group (USA) Inc.

    Bt c s sao chp no khng c s ng ca First News u l bthp php v vi phm Lut Xut bn Vit Nam, Lut Bn quyn Quc

    t v Cng c Bo h Bn quyn S hu Tr tu Berne.

    CNG TY VN HA SNG TO TR VIT - FIRST NEWS

    11H Nguyn Th Minh Khai, Q. 1, TP. H Ch MinhTel: (84.8) 38227979 - 38227980 - 38233859 - 38233860

    Fax: (84.8) 38224560; Email: [email protected]

    Website:www.firstnews.com.vn

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    Ngay c

    BUFFETTCNG KHNGHON HONhng bi hc gi tr t Nh u t

    Thng minh Nht Th gii

    Ngi dch:

    Nguyn Trung An (MBA)

    Vng Bo Long

    First News

    NH XUT BN TR

    VA H A N J A N J I G I A N

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    LI TA

    ahan Janjigian l ngi c y cc phm cht c bit vit v Warren Buffett. Tuy Nh hin trit x Omaha l ch ca rt nhiu quyn sch, nhng quyn sch ca Vahan rt c bit.

    N khng phi l mt l th tnh cng khng phi l mt s ch trchhay lng m. Vahan cng l mt ngi la chn c phiu rt xut sc ng qun l hai bn tin u t Forbes Special Situation Survey vForbes Growth Investor. ng th hin mt nng lc tht tuyt vi.Nhng ngi nhn hai bn tin ny thu c nhiu ch li t nhngphn tch sc bn, khng cm tnh ca Vahan. Do , Vahan c cnhng kin thc su sc thc s cm nhn c hiu qu phi

    thng ca Warren Buffett Tp on Berkshire Hathaway. nggii thch mt cch cn thn v kin nhn phng php u t klut cao v s nhn xa trng rng ca Buffett cng nh s tin haca n trong qu trnh pht trin ti sn ca Berkshire Hathaway.

    Nhng y khng phi l mt bn phn tch y v hintng Buffett Vahan kho lo s dng nhng kin thc su sc

    v s thnh cng ca con ngi v i ny dy cho chng ta nhngiu cn bit v u t gi tr nhm duy tr hiu qu cao trn thtrng. Vahan cng phn tch k lng nhng chin lc u tkhc, v Ph Wall khng ch tn ti mt cch u t duy nht.

    Rc ri vi hu ht cc nh u t l h thng xuyn nhyt phng php ny sang phng php khc. Rt t ngi kin tr

    nh Buffett trong vic gi li c phiu nhiu nm trc khi bn i.

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    V cng c rt t ngi c kh nng p dng mt cch nht qun

    nhng chin lc khc nhau m Vahan phn tch trong quyn schny. Nu bn sn sng dp b cm xc qua mt bn, quyn sch nys tr thnh mt kho bu kin thc u t su sc dnh cho bn.

    Khng c nh u t no lun lun ng. Con ngi khngth lm c iu . Bn thn Buffett cng c nhng giai on khkhn phi bn l nhng c phiu m ng mua. Tuy nhin, ngthng nm gi nhng c phiu tt kh lu. Nh p dng mtphng php u t nht qun v an ton thm ch cn c tinhchnh theo thi gian Buffett lm c nhng iu k diu.

    Rt may l bn khng cn phi l mt Warren Buffett mi kimc mc thu nhp trong m t th trng chng khon. S k diuca li sut kp c ngha l bt c nh u t cn trng no cng cth t c thnh cng thc s v lu di.

    iu lm cho quyn sch ny c bit c gi tr l VahanJanjigian khng phi l ngi m qung khi ng khn ngoan nhnra rng hot ng u t khng din ra trong mi trng chnkhng. Chng vit v thu l phn m tt c mi ngi nn c,c bit l cc chnh tr gia. ng ngc nhin l mt thin ti nhBuffett li c ci nhn thin cn v vn then cht ny. Khi Arnold

    Schwazenegger quyt nh chy ua vo chc Thng c bangCalifornia, Buffett khuyn ng nn ng h vic tng cc loi thunh trn ti sn, iu ny sut ko chn Arnold li vi th gii innh Hollywood thay v a ng vo Dinh Thng c.

    Nh nhiu ngi khc Washington, Buffett ngh rng ngigiu nn b nh thu thu nhp vi thu sut cao hn. ng cng ra

    sc ng h vic p dng thu ti sn tha k.

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    Buffett tin rng ngi M c sng trong mt t nc tuyt

    vi v nhng ngi may mn lm n tt M nn ng thunhiu hn. Ma mai thay, nu li khuyn ca Buffett c thc hinth nn kinh t s vn hnh km i v gi tr ca cc khon u t caBuffett s chu nh hng nng n. Hy nhn li hiu qu ngho nnca chng khon v nn kinh t trong thi k thu cao thp k 1970m xem.

    iu m Nh hin trit x Omaha v qu nhiu ngi khckhng nhn ra l thu cng l mt ci gi phi tr v l mt gnhnng, ch khng ch l mt phng tin tng thu nhp cho ngn schnh nc. Thu thu nhp l ci gi bn phi tr lm vic; thu litc l gnh nng ln vai bn nu bn kinh doanh thnh cng; vmc thu m bn phi tr cho nhng khon li tc t vn u t lci gi bn phi tr cho nhng ri ro m mnh phi chp nhn. Rt

    n gin, nu bn gim nh gnh nng cho nhng iu tch cc nhlm vic t nng sut cao, dm chp nhn ri ro v kinh doanhthnh cng th chng s thng xuyn din ra hn. Tng gi ln thiu ngc li s xy ra. Janjigian ch ra rng 1% nhng ngi cthu nhp hng u nc M chim n 21% tng thu nhp c tora v h tr n 39% thu thu nhp lin bang.

    Buffett cng chm hiu nh vy i vi vn thu ti sntha k (death tax). ng ng h vic thu hi ti sn v tin rng chnhph nn nhn phn ln ti sn m bn li. Nu khng, nhngngi tha k ca bn s nhn c ti sn m khng phi lao ngv ca tri cho s lm xi mn tnh cch ca h, khuyn khch hsng hng th mt cch v trch nhim. Tri li, thu ti sn thak li mang tnh trng pht i vi hot ng to dng vn v tnh

    tit kim. Ti sao li phi tch ly ti sn nu phn ln chng s ri

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    vo tay chnh ph mt cch d dng? Vahan vit rng: Ti sn l

    nhng g cn li sau khi np tt c cc khon thu. Cn cc nhlp quc ca chng ta c th s din gii vn ny theo cch sau:Cn sng l cn ng thu!.

    Thu ti sn tha k c mt tc ng k l m Buffett v nhngngi ng h khc khng nhn thy. Khi thu sut cao, nhng ngirt giu s tm cch n trnh loi thu ny. Chnh trch nhim ngthu ti sn ca Buffett cng rt thp v ng ang trao tng hu httin bc ca mnh cho Qu t thin Bill & Melinda Gates. Nhngngi thc s giu c thit lp nhng c ch b mt v nhng mnhkhe khc gi cho ti sn ca mnh nguyn vn, v iu thngng ngha vi vic nhng ngi tha k s khng trc tip chmtay n n. Ti sn do vn c duy tr nguyn vn. Nu khngc thu ti sn tha k, phn ln ti sn s chuyn trc tip vo tay

    con chu h - hu ht nhng ngi ny khng c c bn nng kinhdoanh; cho nn, s tin s nhanh chng c lun chuyn. l bncht ca con ngi. V d, hy xem xt danh sch 400 ngi giunht nc M ca Forbes ngy nay, khng ngi no trong s h ch du Pont v ch c mt ngi c h Rockefeller, trong khi chai gia nh ny u kim sot nhng ti sn khng l cch y trndi 25 nm.

    Nhng ngi tin tng mnh m vo thu cao pht l lchs. Nhng k hoch ct gim thu thu nhp ln thi Reagan nm1981 v 1986 bin mt nn kinh t M nh n thnh nn kinht nng ng nht th gii. T trng GDP ca nc M so vi GDPton cu tng mnh m, cng nh gi tr vn c phn ca nc Mso vi tng gi tr vn c phn ca c th gii.

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    S tng thu ca Clinton nm 1993 lm chm ng k tc

    tng trng ca nn kinh t M v gp phn lm cho ng Dnch tht bi thm hi trong k bu c nm 1994. Vi nhng ngithuc ng Cng ha thuc phe a s trong Quc hi, v Tngthng ng h tng thu Clinton b dn vo chn tng. Chngtrnh x hi ha y t ca b Clinton b tht bi. Chi tiu b kim sot.V quan trng nht l c nhng ng thi tch cc v thu sau :thu nh trn li tc t vn c ct gim gn 29%. Thu nh trn

    li tc t vn cho nhng ngi s hu nh gn nh c loi b, vphp lnh dng nh thu trn Internet c chuyn thnh lut iu ny gp phn rt ln vo vic pht trin nn kinh t mt cchmnh m. Chng trnh ct gim thu nm 2003 ca chnh quynBush thu thu nhp trn vn u t tip tc c ct gim, thuthu nhp t c tc i vi c nhn c gim nh, v nhng gi kch

    thch doanh nghip u t c trin khai bin nn kinh t Mt vic tng trng vi tc thc 1% ln thnh 3-4%. T nm 2003n 2007, s tng trng ca nn kinh t M vt quy m tngth ca nn kinh t Trung Quc. V bn c on c iu gkhng? Vn c phn tng vt gn gp i so vi mc thp nht vocui nm 2002.

    Vahan cn ch ra mt kha cnh khc m Buffett t ra thin cn:thng tin nh hng thu nhp. Hu ht cc tp on i chng lnu cung cp cho cc nh phn tch chng khon c tnh thu nhpk vng ca h cho tng qu. Nu cng ty khng t c mc thunhp k vng d ch t hn mt vi xu th c phiu ca h s gimmnh. Buffett cm thy nhng thng tin nh hng nh vy gpphn lm tng tnh thiu n nh ca th trng chng khon v

    buc b my qun l hng n nhng hot ng qu thin v ngn

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    hn. ng thuyt phc nhiu cng ty m ng nm gi c phiu

    ln, nh Coca-Cola v Washington Post, ngng cung cp thng tinnh hng.

    Vahan a ra mt phn bin ht sc thuyt phc v tinh t.D c hay khng c cung cp thng tin v thu nhp k vng, ccnh u t cng t a ra cc c tnh ca h. Hn na, b myqun l cn phi cung cp thng tin cho nh u t nhiu hn, chkhng phi t i. V tnh khng n nh ca th trng, cc nghincu cho thy nhng cng ty khng cung cp thng tin nh hngthng d bin ng hn nhng cng ty c cung cp. Quan trnghn l nhng cng ty khng cung cp thng tin nh hng thngc gi tr vn ha th trng nh hn. Ni cch khc, nhng cng tya ra c tnh thu nhp thng c gi c phiu cao hn.

    V th, y l mt quyn sch khc thng. Tuy tp trung ni

    v nh u t thnh cng nht trong lch s hin i, nhng n cngmang li cho c gi nhng kin thc su sc v chin lc chc chn u t. V cui cng, nhng din gii ca n v thu v s minhbch trong qun tr s to ra mt mi trng thun li gi tr vnc phn m rng hn na.

    Tm li, bn ang c trong tay mt quyn sch 3 trong 1,

    ngha l bn ang nm gi mt ti sn gi tr cao b nh gi thp.

    - Steve Forbes

    Ch tch kim Gim c iu hnh Forbes Inc.Tng bin tp tp ch Forbes

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    GII THIU

    Ngy 26 thng 6 nm 2006, ngi giu th hai nc M thng

    bo rng ng s trao tng phn ln ti sn ca mnh cho ngi giunht nc M. Ngi bn cnh v chng Bill v Melinda Gates Thvin Quc gia New York, Warren Buffett cng b k hoch hintng 10 triu c phiu ph thng loi B ca Berkshire Hathaway, trgi c tnh vo thi im khong 31 t USD, cho Qu T thinBill & Melinda Gates Foundation. Ngoi ra, ng cn dnh thm 2

    triu c phiu, tng ng 6,3 t USD, trao tng cho nhng qu tthin do ba ngi con ca ng iu hnh, trong c mt qu tthin c t tn theo tn ngi v qu c ca ng. Ch bng mthnh ng, ngi n ng tng to dng c ting tm lng lyvi vic xy dng mt trong nhng khi ti sn c nhn v i nhtth gii m bo rng th gii ny s nh mi lng ho tm ca ng,cng gn ging nh cch m ng ang ghi tn mnh vo s sch ca

    nhn loi v ti nng lm giu xut chng ca mnh.

    Ti sn ca Buffett qu thc l v cng to ln. ng to ra nbng cch u t. Thc ra, c th ni rng Buffett l nh u t vi nht ca mi thi i. Khng ai c cht my may nghi ng nov iu ny, bi chc chn ng s hu mt trong nhng k lc kinhdoanh lu di tt nht. V ng lnh o tp on Berkshire

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    Hathaway, mt cng ty i chng c giao dch trn sn chng

    khon, nn nhng quyt nh u t ca ng u c th hin honton minh bch, khng cht giu gim v cng d dng theo di.Buffett nm quyn iu hnh Berkshire t nhng nm 1960 v cuicng chuyn i n t mt cng ty dt thnh mt cng ty u t.Di triu i ca ng, trong vai tr gim c iu hnh, ng to ra mt gia ti khng l cho bn thn v cho tt c cc c ngkhc.

    T duy ca Buffett i khi khng mang tnh truyn thng. Vd, hu ht cc nh u t khc thch nhn thy gi c phiu m hmua tng ln nhanh chng. Buffett khng thch vy. ng ni rngthi im duy nht m bn nn thch gi c phiu tng ln l thiim bn sn sng bn chng i. V Buffett l mt nh u t dihn, nn ng khng mun nhn thy gi tng ln ngay lp tc. Thc

    ra, nu ng thc s thch mt c phiu no n, ng s cm thy vuihn nu gi gim, nh ng c th mua thm c phiu v thcs ct gim c mc chi ph c bn. Bng cch ny, khi gi hi phcsau nhiu bin c, ng s nhn c nhng khon li nhun khngl. Cch t duy nh th ny mang li cho Berkshire nhng khonli nhun t vn vo khong 8,5 t USD t American Express, 8 tUSD t Coca-Cola, 5,5 t USD t Procter & Gamble, v 4 t USDt Wells Fargo. Mt s m c phiu trong danh mc u t caBerkshire cng to ra nhng t sut li nhun khng l. Ch ringtin li t cng ty ch qun t Washington Post cng t n mc11.600%.

    Mt trong nhng tnh cch ng qu nht ca Buffett l ngbit r nhng im hn ch ca mnh. V d, ng bit rng mnh

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    khng th tr thnh chuyn gia trong tt c cc ngnh kinh doanh.

    Nhng bo him l mt ngnh m ng hiu r tng ng i ncbc. ng c mt k nng c bit trong vic nh gi ri ro. ngkhm ph ra cch u t khon tin ch ca cc cng ty bo himvi sut thu nhp cao thanh ton nhng yu cu bo himtrong tng lai v li rt nhiu li nhun cho c ng.

    Buffett lun thc hin theo mt phng php tip cn u tmang tnh k lut. ng tr nn ni ting trong vic trnh nhngphong cch v chin lc u t nng (nhng cui cng ha rachng c ngha g ngoi nhng ln sng o tng chng tn). Vd, th trng chng khon M bng n t nhng nm gia v cuithp nin 1990, ch yu c thc y bi cc c phiu cng ngh.Buffett ni ting tm cch n trnh chnh nhng c phiu tng tkhi chng thc y cc ch s th trng ln cao cha tng c. Thm

    ch, ng cn khng mua mt c phiu no ca Microsoft, mc dcng ty ny c ngi bn tt Bill Gates ca ng lnh o.

    Buffett b nhiu ngi ch trch v khng tham gia vo cucua do ngnh cng ngh dn u , nhng ng khng my quantm n nhng ngi ph bnh mnh. Nhng c ng Berkshirecng vy. H hiu phng php tip cn lu di ca ng v h t tin

    rng di s dn dt ca Buffett, h s hon ton c tha mn vinhng khon thu nhp t c.

    Buffett lun gn lin vi nhng g ng bit r nht. ng thchcc cng ty hot ng trong nhng ngnh kinh doanh n gin mng c th hiu v kim sot c. ng khng hiu lm th no nh gi ngnh phn mm v ngnh cht bn dn. ng ngh rng

    qu kh c th d bo dng tin ca nhng cng ty ny vi

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    chnh xc cao. Tuy nhin, ng hiu rt su v cch nh gi ngnh

    nc gii kht c ga, dao co v ngn hng. ng cng thch cc cngty c qun l bi nhng ngi lnh o trung thc v c ti nng.V trn ht, ng mun mua li nhng cng ty vi mc gi thp hngi tr ni ti ca chng, v s nm gi chng trong mt khong thigian rt di. Thc t chng minh rng chin lc ny mang lili ch v cng to ln cho ng v cc c ng Berkshire Hathawaytrong hn bn thp k qua.

    Tuy nhin, tr li nhng nm 1990, c nhiu nh u t nghrng Buffett nh mt cm gic ca mnh. ng khng thmquan tm n s thnh cng m ng t c qua mt thi gian di.H tin rng ng l chuyn ca xu hng mi. Vo thi im, nhiu nh u t bt u tin rng chng ta bc sang mtthi i mi. Thc ra, cc chuyn gia gi l nn kinh t mi. H

    cho rng cc quy lut c khng cn p dng c na. Nhng nhu t ny khng ngn ngi thu mua v s c phiu c bn vi gicao gp nhiu ln m ch mt thi gian trc c xem l mcgi cao mt cch k quc.

    C l cch suy ngh ny c minh ha r nht bng mt l thgi cho bn tin Forbes Special Situation Survey bi mt trong nhng

    ngi ng k bo di hn. N c vit vo u nm 2000, giaion cui ca hin tng c gi l thi k bng n bong bngdot-com (ly t cch c .com thng xut hin trong tn cc cngty hot ng trn nn tng Internet), p li mt s xut muac phiu ngha l c phiu ca mt cng ty thuc nn kinh t ctheo khi nim lc . Chng c g lin quan n cng ngh cao ivi c phiu ny. Thc ra, n l loi c phiu m bn thn Buffett c

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    l cng a thch, nhng tc gi l th n vit: Bn c thc s

    mong ti mua mt c phiu c th tng ln ch khong 40% trong 2nm khng? Ti 80 tui ri. Ti chng th sng mun i kim c mt khon tin t i th u!.

    L th c v nh mt cu chuyn a, nhng ngi vit thcs rt nghim tc. Nhng t ng ca b r rng chng thc rngmc bt hp l v kh duy tr t nhng k vng ca nh u ttrong nhng ngy thng bng bng kh th y l ng. By gi,bn c th d dng nhn li nhng iu din ra v ni rng l ra ccnh u t lc nn hiu r hn nhng iu mnh lm. Khng mayl nhiu nh u t cho bn thn mnh ri vo vng xoy inlon ca m ng. Buffett khng bao gi b ri vo ci by ny.ng l bc thy ca s im tnh. ng lun lun suy ngh mt cchhp l v c phng php hn hoi. T duy v u t theo cch ca

    Buffett c th mang li li nhun c bit khi tt c nhng ngikhc b cm xc v s in lon ca m ng dn dt hnh ngca mnh.

    Theo cng ty nghin cu th trng chng khon IbbotsonAssociates, tng sut thu nhp trung bnh di hn theo s hc (nghal bao gm c c tc) cho nhng c phiu c mc vn ha th trng

    ln ch vo khong 12% mt nm (t 5 t USD tr ln c xem lc mc vn ha ln). i vi nhng c phiu c mc vn ha nh,con s thng tt hn khong 17% mt nm.

    Nhng vo cui nhng nm 1990, cc nh u t li mun thuli nhiu hn. H lun nghe ni n cc c phiu trong lnh vcInternet vi nhng ci tn nghe rt bun ci, dng nh c mc

    gi tng gp i hoc gp ba sau vi thng. Trn thc t, nhiu cng

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    ty thm ci ui .com vo cui tn cng ty ca mnh, v h tin

    iu ny s gip h thu ht nhiu s quan tm hn t th trng.Ht cuc kho st ny n cuc kho st khc cho thy nhngnh u t suy ngh vic kim c sut thu nhp t nht l 20% minm trn th trng chng khon l hon ton hp l. H khngquan tm n vic mua vo nhng c phiu c th to ra sut thunhp khim tn hn thm ch ngay c khi chng t ra tt hn so vimc trung bnh trong lch s. V d nhin, h khng quan tm g

    n nhng c phiu c gi tr cao.

    Tuy nhin, Buffett hiu r iu ny hn ai ht. ng l mttrong nhng hc tr sc so nht trn th trng ti chnh v lunl ngi gii nht trong nhiu thp k qua. ng ch n nhngkhuynh hng di hn, v ng bit rng hot ng u t hp l cho thua s phn khch ca m ng (hoc s h hi phi l

    tr(1) theo cch ni ca cu Ch tch Qu D tr Lin bang AlanGreenspan).

    Buffett hiu rt tng tn bo co nghin cu ca Ibbotson.ng bit rng nhng mc thu nhp cao hn mc trung bnh khngth tip din mi c. Th trng s lun st gim sau thi k bngn nhng khon thu nhp ln cha tng thy nhng khng thc

    cht. Cng ging nh Buffett, cc nh u t c l tr khc b chnho trn bo ch v nhng quan im thn trng ca h vo cuinhng nm 1990. V d, David Dreman cnh bo cc nh u ttrong chuyn mc ca mnh trn tp ch Forbes rng gi c c phiu tr nn qu t mua vo. Mt c gi sau gi ng l mtcon khng long ngu ngc v khng hiu rng mi vic khc ivo thi im .

    16 -

    (1) Nguyn vn: irritional exurberance.

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    D nhin, nhiu bin c cui cng cng chng minh nhng

    ngi nh Buffett v Dreman l ng. Nhng vo nhng ngy cnsay sa vi bong bng dot-com, cc nh u t tr nn thamlam qu mc. H chng bao gi cm thy hi lng vi ci gi l tsut thu nhp hp l. H mun kim tht nhiu tin, v tht nhanh.Do th trng ang tng ln v nhng c phiu ca h c gi qu cao,h tin rng h cng l nhng chuyn gia v u t. Mt s ngithm ch cn ngh mnh thng minh hn c Buffett! Khi s thoi mi

    v kin nhn bin mt hon ton, nhng nh u t cui cng lmvo cnh ph sn. Tri li, Buffett cng tr nn giu hn bao gi ht.

    Tuy nhin, ngi vit l th trn nu ra mt im rt thv. Vi uy tn vng chc l mt nh u t di hn, Warren Buffettkhng ng h nhng ngi thch kim tin nhanh bng vic ltsng vi nhng c phiu ngn hn. ng ni rng khong thi gian

    nm gi c ng a thch l vnh vin. Nhng ngi vit th 80tui nu trn chng quan tm g n di hn na. B y r rnglun ngh n mt khung thi gian u t ngn hn nhiu, v l dotui tc.

    Khng may l khi b ang tm cch kim tin nhanh th nhngch s chnh ca th trng sp t n nhng mc cao k lc v bt

    u ri vo thi k suy thoi ko di v au n. Mi ngi ch c thhy vng b khng ton b tin tit kim c i mnh vo mttrong nhng c phiu cng ngh hoc c phiu cng ty Internet, khicui cng chng sp xung ch cn 1 USD mi c phiu. Lth ca b cho thy r rng b bit chnh xc mnh ang tm kimiu g. B mun c li ln v tht nhanh. Tuy nhin, c l b khnghiu c nhng ri ro km theo chin lc u t kiu . C l, b

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    thm ch khng quan tm n ri ro. Xt cho cng, nh b ni rt

    r trong l th ca mnh, b ang gi i v c th b s khng c tin phng khi bnh tt. Ch s Dow Jones v ch s S&P 500 mtkhong 7 nm tr li mc cao nh nm 2000. Trong cng thigian y, ch s NASDAQ cng xoay x phc hi c khong mtna con s mt mt ca mnh. Mi ngi u c th c tnh thigian cn thit cc ch s ca cc ngnh cng ngh nu trn ly licc khon st gim nhng c l phi mt n c thp k hoc hn

    chng phc hi.

    Trong s rt nhiu iu m bn s bit khi c ht quyn schny, bn s thy Warren thng chp thi c khi th trng bn tho.Xt cho cng, vic bn tho c phiu cng ging nh vic bn hngi h gi. Nu bn khao kht mt i giy t tin, bn c munmua khi n c bn i h gi hay khng? Tng t nh vy, nu

    bn thch mt c phiu c gi 50 USD th bn c cm thy thch thhn khi n xung mc 40 USD hay khng? D nhin, giy v cphiu khng hon ton ging nhau. Mt i giy s chng thay ig nu n c bn h gi. Nhng gi c phiu phn nh k vng vdng tin trong tng lai. Nu gi rt, iu ngha l tt c nhngnh u t tr nn t lc quan hn v dng tin y. H h thp kvng ca mnh v trin vng pht trin ca cng ty.

    Khng ging nh vic h gi bn giy, vic bn tho c phiutrn th trng chng khon c th lm cc nh u t bnh thnghong lon. Cn phi c s gan l rt ln sn sng nhy vo muac phiu khi tt c nhng ngi khc ang bn chng i. D nhin,ri ro xut hin khi bn mua qu sm. Bi v, mt khi c phiu gim gi 20% th khng c g bo m n s khng gim thm 20%

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    na. Mt trong nhng cu chm ngn c trng Ph Wall l

    ng bt mt con dao ang ri. Tuy nhin, c nhiu c hi cphiu ca mt cng ty tt cui cng cng hi phc. Chng ai bitchc chn khi no s phc hi s bt u. i khi, c th mt n vinm. Nhng nu bn l mt nh u t kin nhn c tm nhn dihn, bn s khng cm thy kh chu khi ch i u. Thm ch,bn c th s dng thi gian ny mua thm nhiu c phiu hn mc gi thp hn. D nhin, Buffett l bc thy trong u t di hn.

    Buffett l mt bng chng xc thc cho thy s kin nhn c th lcch mang li li nhun khng l cho hot ng u t ca bn.

    D s thnh cng ca Buffett ht sc to ln, nhng bn s bitrng cch thc ca Buffett khng phi l cch duy nht kim cmc li nhun tt trn th trng chng khon. Thc ra, trong nhiutrng hp, khng phi l cch tt nht. C nhiu cch u t.

    Mt s cch mang tnh c bc. V d, nu bn n trng ua ngav t rt nhiu tin vo mt con nga no , d nhin iu nykhng phi l u t. lm cho mnh cm thy thoi mi hn, bnc th gi l gii tr. Tuy nhin, nu bn c l tr, bn s nhn ra thc s l hnh vi nh bc. Tng t, vic dn mt khon tincc ln vo mt c phiu duy nht cng khng phi l u t. Gingnh vic nh c trng ua nga, dn tin vo mt c phiu duynht ch n gin ging nh nh bc. thi cc ngc li, bn cth lm theo cch an ton bng cch phn tn tin trn mt s lngloi c phiu ln. Vi tn gi l a dng ha danh mc u t,phng php ny c hu ht nhng chuyn gia lm vic trong lnhvc u t p dng. Tuy vy, nu bn a dng ha qu mc, bnkhng th hy vng nhn c kt qu tt hn tng th th trng.

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    Cng c mt cu hi lin quan n thi gian. Ging nh

    Buffett, bn c th thc hin theo chin lc mua v nm gi, u tcho tng lai di hn. Hoc bn cng c th p dng chin lc kimsot thi gian th trng, u t ngn hn. Tuy u t ngn hn cli nhun tt, nhng n i hi mt tm th hon ton khc. Chngta s xem xt mt s kt qu nghin cu hc thut vn chng minhrng cc nh u t thiu kin nhn, ch mun tp trung vo thunhp ngn hn nn hng n nhng chin lc nhn mnh s tng

    trng v ng lc ca th trng.

    Chng ta cng s xem xt cc nghin cu chng minh rngc phiu gi tr s vt qua c phiu tng trng trong di hn. Muavo mt danh mc a dng ha rng ri gm nhng c phiu gi trv nm gi chng trong thi gian di l mt cch u t kh an ton,nhng c l khng th v. Tuy nhin, cng l mt chin lc c

    th sinh li. Tri li, p dng phng php u t tp trung vo mts lng m c phiu nh, d l ngn hn hay di hn, c th tr nnhp dn mt cch ng k, nhng cch ny chc chn s c nhiuri ro hn.

    Buffett vi s kin tr ca mt v thnh tr thnh bc thytrong hot ng u t di hn. C tnh ca ng rt thch hp vi

    loi chin lc ny. Tuy nhin, trong nhng trang sch tip theo,bn s bit rng Buffett cng tng tham gia vo hot ng mua bnc phiu tng i ngn hn. Thc ra, mt bi hc qu gi cn crt ra t quyn sch ny l nhng chin lc u t ca Buffettkhng th d dng c phn loi nh vy. Chng tin ha theothi gian. V d, trong bui u mi bc chn vo s nghip, ng th hin s thch chim ly nhng v tr s hu ln trong mt s

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    t cng ty. Mc d ng vn thin v phng php tip cn tp trung

    ny, nhng trong nhng nm gn y vic a dng ha ni lnng vai tr quan trng hn trong phong cch u t ca Buffett.

    tr thnh mt nh u t thnh cng, bn phi l mt nhu t c kin thc vng vng, v im khi u tt nht chnh lxem xt nhng chin lc u t ca Buffett. Quyn sch ny strnh by cho bn thy nhng im tt v cha tt ca nhng chinlc y, khi no th chng t hiu qu ti a, khi no th khng. Ns dy cho bn rng vic a dng ha, mt trong nhng khi nimquan trng nht trong lnh vc ti chnh hin i, khng ch gipbn gim ri ro trong u t; n cn gii hn tim nng li nhun cabn. Bn s thy quan im ca Buffett v a dng ha pht trinnh th no theo thi gian.

    Quyn sch ny cng gip bn hiu v phn bit s khc nhau

    gia mt c phiu gi tr v mt c phiu b nh gi thp. iu nyrt quan trng nu bn mun hiu r cch u t ca Buffett. Quynsch ny cng ch ra cho bn bit khi no bn nn hng danh mcu t v cc c phiu gi tr v khi no nn u tin cho nhng cphiu tng trng. Thm ch, n cn dy cho bn mt chin lc ut khng h mang du n ca Buffett - u t momentum(2) - v lm

    th no bn c th s dng n nh mt li th ca mnh.Trong nhng trang sch tip theo, bn s bit rng khng c ai

    l hon ho c - k c Warren Buffett. Tht kh tin, nhng ngay cBuffett cng phm phi mt s sai lm. M trong u t, sai lm c

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    (2) Momentum investing - tm dch l u t xung lng hay ng lng: L chin lc ut nhm vo vic tng vn da trn s lin tc ca cc xu hng ang tn ti trn th trng.Cc nh u t momentum tin rng nhng t tng gi mnh ca mt loi chng khon no s ko theo nhng khon li nhun cng thm, hoc ngc li, nhng khon st gim gitr tng ng. Ring momentum" c gi l ch s xung lng" dng o tc thay ica gi ng ca, c s dng nhn din mc suy yu ca xu th v cc im o chiu.Ch s ny thng b nh gi thp do s n gin ca n.

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    th gy ra nhng thit hi rt ln. Tuy nhin, bn c th hc hi rt

    nhiu t nhng sai lm ca mnh. Thng thng, mi ngi thngmun qun i nhng sai lm v chng gi li nhng k nim aubun, nhng nh u t cn phi ghi nh chng. Bng cch ny, bnc th oan chc rng mnh hc hi c nhng iu hu ch, v bns c thm c hi trnh c vt xe khi ng trc nhng sai lmtng t v sau. Tht bi thng l ngi thy v i nht, nhng nch ng khi bn rt ra c bi hc cho chnh mnh.

    Rt may cho cc c ng ca Buffett, Buffett rt t khi phmsai lm v khng thng xuyn. Nhng khi ni n sai lm, cn lu mt c im quan trng gip Buffett khc xa so vi nhiu nhu t khc. ng th hin mt ti nng ng kinh ngc trong vicbin nhng iu c v l sai lm hin nhin thnh nhng thnh cngln. Thc ra, y chnh l l do gii thch ti sao Buffett li l nh u

    t thnh cng nht v giu c nht ca mi thi i.Vng, ni n s giu c, mi nm tp ch Forbes xut bn mt

    danh sch 400 ngi M giu nht. H cng a ra mt danh schcc t ph trn th gii. Ht nm ny n nm khc, tn ca WarrenBuffett lun xut hin v tr u tin hoc gn u tin trong c haidanh sch ny. Bn cng s bit rng ti sn ca Buffett gn lin vi

    mt cng ty ch cht. Trong trng hp ca Buffett, cng ty lBerkshire Hathaway. ng va l Gim c iu hnh va l Chtch Hi ng qun tr. Tuy nhin, Berkshire l mt cng ty c nhtv nh trn th gii ny.

    Khng ging hu ht cc cng ty chuyn sn xut mt s snphm chnh hoc cung cp nhng dch v c th, Berkshire ging

    mt cng ty u t hn. Trong khi doanh thu v li nhun ca

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    Berkshire ch yu t hot ng kinh doanh bo him, hot ng

    kinh doanh thc s ca Berkshire l u t vo cc cng ty khc.Phng thc kinh doanh ny bin Berkshire thnh mt t chcging nh mt qu u t tng h (mutual fund), v Buffett lgim c ca qu . y l im lm cho Buffett tr thnh mttrong s t nhng t ph lm giu ch yu nh vo hot ng u t,ch khng thc s xy dng v iu hnh mt doanh nghip tptrung vo mt lnh vc kinh doanh c th. Phn ln thnh cng ca

    Berkshire l nh kh nng ca Buffett trong vic s dng tin thngd t cc doanh nghip bo him lm ngun ti chnh cho victhu mua li nhng cng ty n nn lm ra khc. y chnh l l doch yu gii thch v sao Buffett c gi l nh u t v i, thayv ch n gin gi l mt doanh nhn v i.

    V c hn mt chc quyn sch vit v Warren Buffett v

    Berkshire Hathaway, ti sao chng ta li cn thm mt quyn nanh vy? Trong khi nhiu quyn sch trc tho lun v phntch nhng chin lc u t ca Buffett, hu ht u trng c v lmt l th tnh dnh cho mt con ngi v i. D nhin Buffettxng ng vi tt c nhng li khen tng m v s ngi v tiptc dnh cho ng, nhng hu ht nhng quyn sch vit v Buffettli thiu i v ny: Chng khng ch ra c nhng sai st trongphng php u t ca ng. Thm ch ngay c khi h phn tchcn thn nhng chin lc u t c Buffett a thch, h cngkhng gii thch c u l vic m Buffett lm m cc nh u tkhc c th hy vng phng theo. C l, iu quan trng hn c l cctc gi khng gii thch c nhng iu Buffett lm m cc nhu t khc khng c hy vng g trong vic sao chp t ng c.

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    Hn na, nhng tc gi trc y ch n gin l khng nhn

    nhn c nhiu vn m Buffett ng h nhng khng c tc dngtt nht i vi quyn li ca nh u t. Chng hn, Buffett tinrng cc tp on nn chm dt vic cung cp cho nh u t ccbo co nh hng thu nhp hng qu, nh s trnh by trongnhng trang sch tip theo. Ni cch khc, trong thi i cc c quaniu hnh php lut ang c gng khuyn khch cc doanh nghipgia tng tnh minh bch v cung cp cng nhiu thng tin cng tt

    th Buffett li ng h mt chnh sch c th dn n vic cc doanhnghip s bng bt thng tin hn. D nhin, nh ca ng l ttnh nhng g ng lm, nhng bn s thy rng, mt chnh schm thng tin khng bao gi l tt i vi cc nh u t.

    Buffett cng ng h vic nh thu cao i vi nhng ngic xem l giu c. ng thch thu ti sn, ngay c khi bn thn

    ng s trnh loi thu ny bng cch hin tng ti sn ca mnh chocc qu t thin. ng phn i nhng n lc ct gim thu sut thuthu nhp, ngay c khi cc chng c cho thy thu sut thp hn sgip thc y nn kinh t pht trin v gim tht nghip nh vickhuyn khch u t v ct gim chi ph vn. Cng c bng chngcho thy t sut thu thp hn s dn n thu nhp ca chnh pht thu s cao hn. Khi c vn cho Arnold Schwarzenegger tranh cchc thng c bang California, Buffett xut Armold tng thuti sn. iu th v na bn s nhn ra l, Buffett tha nhn rng sdo d trong vic bn i mt vi cng ty bt c gi no nh hngn hiu qu ti chnh ca Berkshire.

    Thc ra, c rt nhiu truyn thuyt v Warren Buffett.Quyn sch ny s c gng phn bit u l nhng cu chuyn hoang

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    ng, u l s thc. Chng hn nh, nhiu nh u t tin rng

    Buffett xem thng nhng chin lc a dng ha, ch khng phitp trung ha danh mc u t. Buffett tng ch bai phng phpu t a dng ha. Tuy nhin, trn thc t Buffett li tin rng huht cc nh u t nn nm gi nhng danh mc c phiu tng ia dng. Thm ch, ngy nay Berkshire cn c mt danh mc adng ha hn nhiu so vi chnh n trong mt qu kh vinh quangv lu di.

    Ngoi ra, nhiu nh u t tin rng Buffett ch mua nhng cphiu gi r, ngha l nhng c phiu c h s gi trn thu nhp(P/E)(3) thp chng ta s cp su hn trong nhng chng tiptheo. Tuy nhin, thc t li phc tp hn nhiu. Buffett khng ch nhiu n cc h s gi, m ging nh tt c nhng chuyn giaphn tch ti chnh c kin thc vng chc, ng c lng dng tin

    tng lai v qua chit khu quy chng v hin ti tnh ton cigi l gi tr ni ti (intrinsic value). ng thch mua nhng cng tym ng c th tr gi thp hn gi tr ni ti ca n. Ni cch khc,ng thch mua c phiu vi gi tt, ch khng phi c phiu r tin.iu ny nghe c v nh l mt s khc bit tinh t, nhng l sphn bit quan trng khi bn c ti nhng trang sch tip theotrong quyn sch ny.

    Tri vi kin chung ca rt nhiu ngi, Buffett khng chngli vic s dng c phiu u i cho nhn vin. iu ny chc chns l mt s ngc nhin i vi nhiu c gi v Buffett lun l mt

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    (3) H s gi trn thu nhp (P/E) l mt trong nhng ch s phn tch quan trng trong quytnh u t chng khon ca nh u t. Thu nhp t c phiu quyt nh gi th trng cac phiu . H s P/E o lng mi quan h gia gi th trng (Market Price - P) v thu nhpca mi c phiu (Earning Per Share - EPS) v c tnh nh sau: P/E = P/EPS. Trong , gi thtrng P ca c phiu l gi m ti c phiu ang c mua bn thi im hin ti; thunhp ca mi c phiu EPS l phn li nhun rng sau thu m cng ty chia cho cc c ngthng trong nm ti chnh gn nht.

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    ngi ln ting ch trch chnh sch lng bng u i dnh cho cc

    nh qun l cp cao trong cc cng ty. Thm ch, Buffett cn l ngii tin phong trong nhng n lc yu cu cc c quan iu hnh canh nc bt buc cc doanh nghip th hin chi ph dnh cho cphiu u i trn cc bn bo co ti chnh. Tuy nhin, trong thct Buffett tin rng quyn mua c phiu u i l mt cng c v cngthch hp tng thng cho cc nh qun l doanh nghip minl chng c cu trc mt cch hp l.

    Bn s thy rng uy tn ca Buffett trong vai tr l ngi bo vquyn li ca c ng c th c phn khng xng ng. Mc d ngl mt trong nhng gim c iu hnh c o c nht M v lngi thng thn xem thng nhng nh qun l ch thch lm giucho bn thn bng chi ph ca cc c ng, nhng bn s khm phra rng Berkshire Hathaway c mt lch s qun tr cng ty kh ti

    tm cho n khi n b S Giao dch Chng khon New York (NYSE New York Stock Exchange) buc phi ci m v minh bch hn.

    Mt hun luyn vin in kinh tng ni vi cc vn ng vinhng u ca mnh rng: Nu mun chy nhanh hn, cc bn phitp luyn cng vi nhng vn ng vin chy nhanh hn bn.Tng t, nu bn mun tr thnh mt nh u t gii hn, hy hc

    hi nhng ngi gii nht. iu khng hay l bn khng th xuthin vn phng ca Warren Buffett Omaha v thng bo rngbn sn sng hc hi. Tin tt l bng cch hc hi nhng k thutca ng, bn c th nm c rt nhiu iu hu ch trong u t vbn c th t bin mnh thnh mt nh u t gii hn nhiu.

    c v Buffett, bn c th bit c iu g c tc dng, iu

    g khng trong hu ht cc trng hp. Bn s m bo rng mnh

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    c nhng thng tin cn thit ti a ha xc sut thnh cng, bt

    k im xut pht u t ca bn nm u. Bn cng s hnh thnhmt nn tng kin thc vng chc v nhng ri ro gn lin vi ccloi chin lc u t a dng khc nhau. V, bn c th tr thnhmt nh u t thc tin hn. Xt cho cng, trong mua bn c phiu,khng c iu g l chc chn c! Tuy nhin, qua nhiu thp knghin cu, cc nh nghin cu khm ph ra nhng chin lcu t no c hiu qu cao nht trong tng mi trng u t khc

    nhau. Nghin cu Buffett v nhn thc c nhng kt qu t vicnghin cu ny c th gip bn m bo rng nhng c hi thnhcng trong u t lun nm trong tm tay ca bn.

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    1MT BUFFETT MI CAA DNG HA?

    Chin lc m chng ti la chn khng theo

    nguyn tc v a dng ha m chng ti ang theo ui.

    - Warren Buffett, 1993

    C l hn 99% nh u t cn phi a dng ha

    danh mc u t su rng hn na.

    - Warren Buffett, 1998

    y l hai trong s nhng pht biu c v rt mu thun vinhau. Vy thc s quan im ca Warren Buffett l g i vi adng ha? ng ng h hay chng li phng thc u t ny? ngc lm theo li khuyn ca mnh i vi ngi khc hay khng, hayl cu tr li ca ng qu phc tp ch khng n gin ch l mt likhng nh hoc ph nh?

    Chc chn tt c cc nh u t u c khuyn bo vo mtlc no rng: Khng nn b tt c trng vo mt gi!(4) a dngha l mt trong nhng nguyn tc c bn nht ca l thuyt qunl danh mc u t hin i. N c dy cho sinh vin ti chnh hu ht cc trng i hc trn khp th gii. N lun c nhi vou h trong tt c cc kha hc ti chnh m h tham gia, t ti

    (4) Dont put all your eggs in one basket!

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    30 -

    chnh doanh nghip cho n l thuyt qun l danh mc u t. Cc

    chuyn vin u t cng c xy cho khi nim ny. Cc nh t vnu t cng xem vic xut chin lc tp trung cho danh mc ut ca khch hng l s t vn thiu trch nhim.

    Cc sinh vin ti chnh v chuyn vin u t khng ch cdy cn phi a dng ha bn trong cc lp ti sn, m h cn cdy phi a dng ha trn nhiu lp ti sn. S a dng ha trnnhiu lp ti sn thng c gi lphn b ti sn(5). C nhiu loilp ti sn khc nhau. Chng gm c c phiu, tri phiu, bt ngsn, tin mt v mt s th khc na. tng y l nh u tnn mua khng ch nhiu m c phiu khc nhau, m h cn nnmua tri phiu, bt ng sn v cc loi ti sn khc. Ngoi ra, hnn gi mt t tin mt. L thuyt qun l danh mc u t hin icho rng bn cng a dng ha cng tt.

    Tuy nhin, a dng ha l mt quy tc m Warren Buffett honton khng thch. Tri li, chin lc u t ca ng ch yu l tptrung vo mt vi c phiu trong danh mc ca mnh t nht iuny din ra trong phn ln s nghip lu di ca ng. Nhngtrong thi gian gn y, Berkshire Hathaway, cng ty m Buffett vi tc Charlie Munger iu hnh nhiu thp k qua, bt u a

    dng ha nhiu hn trc. iu ny c khi dy mt kha cnh mitrong phong cch u t ca Buffett khng? Hn 10 nm trc, ngvn ch nho cc chuyn gia u t v bt c ai khuyn ngh a dngha danh mc u t mt cch rng ri. Chng hn, ng ni v adng ha trong l th gi c ng nm 1993 nh sau:

    Chin lc m chng ti p dng khng i theo l thuyt a

    dng ha tiu chun c trnh by di y. Do , nhiu

    (5) Asset allocation.

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    chuyn gia s ni rng chin lc ny chc chn s ri ro hn

    chin lc c nhiu nh u t truyn thng p dng.Chng ti khng tn thnh. Chng ti tin rng chnh sch tp

    trung ha danh mc u t c th gim thiu ri ro rt tt nu

    n gia tng c mc t duy ca nh u t i vi doanh

    nghip ang xt ln mc thoi mi m h cm thy t

    nhng c im kinh t ca n trc khi tin hnh mua. Cng

    vi pht biu trn, chng ti nh ngha ri ro l kh nng

    mt mt hoc b thng tch.

    C l, m bo tuyt i khng c s m h trong quan imca h, Charlie Munger pht biu r thm mt cht. Nm 1996,Barrons trch li ng ni rng l thuyt qun l danh mc u thin i l mt dng hi chng mt tr m ti khng th phn loic. Bt k nhng thnh cng vang di m h t c, v nu

    Buffett v Munger khng tng l gio s ti chnh, c l s nghipca h chm dt t lu.

    D trc y Buffett cng a ra nhng bnh lun tt p vvic tp trung ha cc khon mc u t ca mnh, chng ta khngnn kt lun rng Buffett hon ton khng oi hoi g n ccnguyn tc a dng ha v phn b ti sn. C nhiu bng chng cho

    thy ng vn ng h vic a dng ha danh mc u t. Tuy nhin,ng cho rng l thuyt ti chnh i qu xa i vi khi nim ny.

    Berkshire hin ang s hu hn 70 cng ty con v c nhngkhon u t c phiu ln trong hng t cng ty i chng ang cgiao dch trn sn chng khon. N nm gi mt lng tin v ccloi chng khon mang li thu nhp c nh c gi tr hn 70 t USD,

    bao gm tri phiu Chnh ph, tri phiu bang, tri phiu doanh

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    nghip v cc loi chng khon c th chp bng bt ng sn khc.

    iu ny dng nh to nn mt danh mc u t kh a dng. Tuynhin, trong thc t, ngay c mt danh mc u t a dng nh thcng cn tp trung ha nhiu hn mc l thuyt ti chnh khuynngh. Ch mi vi nm trc y, danh mc u t ca Berkshiremang tnh tp trung ha cao hn nhiu so vi hin nay.

    TNG THU NHP, GIM RI ROD Buffett c suy ngh ra sao v a dng ha i na th l do m

    cc chuyn vin ti chnh ng h mnh m tng ny chnh l ch a dng ha gip gim thiu ri ro trong u t. Thc ra, danhmc u t cng a dng th kh nng gim ri ro cng ln. Nh adng ha danh mc u t, bn c th gim thiu tc ng m mtloi c phiu no c th gy ra nu n bt ng st gi.

    Tt nhin cn c nhiu cch khc gim thiu ri ro. Nhnggim ri ro khng phi l mc ch duy nht ca a dng ha. Mctiu thc s l to ra cng nhiu thu nhp cng tt vi ri ro thpnht c th.

    y khng phi l mt tng ph phim ty hng c tora trong thp ng. ng sau khi nim ny l mt suy lun logic ton

    hc vng chc v nhiu l l xc thc. Suy lun ton hc ny linquan n mt phng php thng k c gi l hip phng sai(covariance) phng php ny cho bit hai bin s, v d nh thunhp t hai loi c phiu, thay i th c quan h vi nhau ra sao.H s tng quan (correlation coefficient) s tiu chun ha hipphng sai n lun nm trong khong gia +1 v -1. iu ny

    gip din gii n mt cch d dng hn.

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    n y, bn c th lc u ngh rng: Mnh cn phi hc

    thm mt lp v ton cao cp ch c hiu mt quyn sch vWarren Buffett hay sao?. Bn hy th pho nh nhm v cu tr lil: khng cn thit. Nhng nu hiu c nhng khi nim ny thbn s d dng nm bt phng php tip cn ca Buffett i vihot ng u t mt cch n gin, d hiu.

    Nu h s tng quan gia hai c phiu bng +1 th hai cphiu ny c gi l c s tng quan thun tuyt i. V d, mtc phiu tng gi tr 10% th c phiu kia tng gi tr 5%. Nu cphiu u gim 10% th c phiu sau cng gim 5%. S chng c ngha g khi nm gi c hai loi c phiu ny trong mt danh mcu t bi v chng lun chuyn ng cng chiu v c t l chnhxc so vi c phiu kia.

    Ngc li, nu h s tng quan l -1 th hai c phiu c gi

    l c s tng quan nghch tuyt i. Nu mt c phiu tng 10% gitr th c phiu kia c th gim 8%. Nu c phiu u gim 10% thc phiu sau tng 8%. Nu cng c nm gi trong mt danh mcu t, chng s to ra mt hng ro hon ho bi v chng lunchuyn ng ngc chiu nhau theo t l chnh xc vi c phiu kia.

    Cn nu h s tng quan bng 0, th hai c phiu ny hon

    ton khng c lin quan g vi nhau. iu ny c ngha l bit chot ng ca c phiu ny cng khng rt ra c gi g v hotng ca c phiu kia.

    D nhin, h s tng quan c th c bt k gi tr no trongkhong t -1 n +1. Vn dng mt s phng php ton kh phctp, bt c gio s ti chnh no cng c th chng minh rng min

    l h s tng quan gia hai c phiu nh hn +1 th vic s hu c

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    hai c phiu s lun c ch. Hn na, h s tng quan cng nh, li

    ch thu c cng ln. Vic gii thch ti sao iu ny xy ra li mangtnh k thut. Tuy nhin, nn tng c bn ca n c gii thch nhsau: thu nhp k vng ca mt danh mc u t l mc trung bnhc trng s ca nhng khon thu nhp k vng ca mi c phiutrong danh mc, nhng ri ro ca danh mc khng phi l mctrung bnh c trng s ca ri ro ca tng c phiu. Xt v mt tonhc, y chnh l tt c ngha ca s a dng ha.

    ng nh bn nghi ng, Buffett chng dnh nhiu thi gian tnh ton cc h s tng quan. ng khng cn lm vy; bn cngkhng cn nu bn bit p dng nhng suy lun hp l. V trongthc t, h s tng quan lun nh hn +1, nn suy lun hp l l ttc nhng g bn cn quan tm. Bn cng phi cng nhn rng vica dng ha danh mc u t s lun mang li li ch cho bn.

    Nhng li ch ny c th l g? N c th c tm tt bng nhnnh sau y:

    Mt danh mc u t c a dng ha ph hp s mang li

    mc thu nhp k vng cao nht trc bt c mc ri ro

    no, hoc mc ri ro thp nht dnh cho bt c mc thu

    nhp k vng no.

    Chc chn mt s nh u t s cho rng cc gio s ti chnh,nhng ngi ngh ra khi nim ny, sng trong mt th gii l thuytno t c s tng ng vi thc t. Phi cng nhn rng, khi ccv gio s thuyt ging th mi ngi thng cm thy bun ng.Nhng khi Warren Buffett ni th tt c h chm ch lng nghe. l v cc gio s da vo nhng l lun ton hc, cha y nhng

    cng thc phc tp, i n nhn nh ca mnh. Cn Buffett li

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    ni ting vi vic a ra nhn nh bng nhng suy lun hp l

    thng thng. Cc gio s thch s phc tp; cn Buffett thch sn gin hn.

    Mc d nhn nh nu trn nghe c v kh n gin, nhngthc ra n n cha mt s khi nim phc tp bn trong. Trc htl t ph hp. N m ch rng khng phi tt c cc danh mc ut a dng ha u c a dng ha mt cch ph hp. Tht ra,trn l thuyt, danh mc c a dng ha ph hp l mt danhmc bao gm tt c cc m c phiu. Vng, ng vy, tt c cc mc phiu! (Ni chnh xc hn, thc s n bao gm tt c cc lp tisn, nhng do quyn sch ny vit v Warren Buffett, mt con ngilun u tin cho s n gin, nn chng ti s hn ch vic tho lunnhng iu khc ngoi c phiu).

    Hn na, s khc bit duy nht gia mt danh mc c a

    dng ha ph hp ny v mt danh mc khc c a dng ha phhp khc chnh l t l ca qu u t vo tng c phiu. Hai danhmc u t c th c nhng c phiu ging nhau, nhng chngkhng ng nht tr phi mi c phiu c u t vi nhng khontin c t l ging nhau.

    Nhn nh ny cng nu ra khi nim thu nhp k vng, tc

    khng phi cc khon thu nhp thc t. iu ny l do khng ai bitc chc chn trc rng mc thu nhp thc t ca mt c phiuhay mt danh mc c phiu s l bao nhiu. Do , thu nhp kvng phi c c tnh. S c tnh ny phn no da trn mc ri ro lin quan l bao nhiu. iu ny mang li cho chng ta mtquy tc cn bn khc ca l thuyt qun l danh mc u t hin

    i: ri ro cng ln, thu nhp k vng cng cao. Mt danh mc c

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    a dng ha ph hp c mc ri ro cao hn mt danh mc c

    a dng ha ph hp khc, th n cng c k vng s mang li thunhp ln hn.

    Thc ra, ri ro l mt bin s quan trng khc trong vic tholun v a dng ha (v trong nhn nh nu trn). u chngny, chng ta bit Buffett nh ngha ri ro l kh nng b mttin. Nhng cng c nhng cch nh ngha ri ro khc. Cc nhnghin cu ti chnh thng tp trung vo tnh khng n nh. Thcs th l thuyt ti chnh ha ra cng bn v mt loi ri ro rt cbit cn l ri ro tng qut, c tnh ton bng mt bin s tonhc khc gi l sai bit (variance), hoc cn bc hai ca n, lchchun (standard deviation). Mt ln na, xin lu rng bn khngnn s hi v nhng khi nim ton hc ny. Bn khng cn phi cbng i hc ton hc mi hiu c quyn sch ny. Tuy nhin,

    nu hiu c chng r rng, bn s cng bit n v phng phptip cn bng suy lun hp l thng thng trong u t ca Buffett.

    iu th v l l thuyt ti chnh xem mt c phiu c tnh riro nu n th hin mt khuynh hng i ln hoc i xung vikhong cch ln. Buffett cho rng iu ny tht ng ngn. Xt chocng th ti sao mt c phiu tng gi li c xem l ri ro? Buffett

    ch lo lng v ri ro rng c phiu s rt gi. L thuyt u t thngtp trung vo ri ro ton phn, nhng Buffett ch lo lng v ri ro stgim gi.

    BUFFETT DA VO SUY L THNG THNG

    L thuyt ti chnh cho rng a dng ha l tt v n gim i

    mc ri ro ton phn. Hn na, l thuyt ny cho rng h s

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    tng quan cng nh th ri ro cng c gim thiu. Buffett bit

    rng l thuyt ny cn nhiu hn ch. Mt hn ch ln l cc h stng quan khng phi l mt con s tnh. Chng lun thay i theothi gian. i khi, chng thay i mt cch rt nhanh chng.

    Nhiu nh u t tin rng a dng ha c th bo v danh mcu t ca h rt cht ch. Mt s c phiu c th xung gi, nhngnhng c phiu khc s tng gi. Kt qu l ton b danh mc ut c bo v. Mt s nh u t thm ch cn ngh rng mt danhmc c a dng ha ph hp s bo v h khi nhng cn bntho ca th trng. Khng may l s vic khng phi lc no cngdin bin ging nh th. Cc nh u t thng hong lon khi thtrng bn tho. H bt u bn m khng cn phn bit g na.Nhng c phiu trc y c xem l khng c tng quan vi mtc phiu khc bt ng xung gi. Ngay c nhng danh mc bao gm

    chng khon nc ngoi cng gnh chu thit hi trong cn bn thohong lon. Ma mai thay, s a dng ha thng mang li kh nngbo v t nht vo lc s bo v c cn n nht.

    May mn l nhng v bn tho hong lon cng him khi xyra. Ngoi tr nhng s kin khc thng nh vy, a dng ha t rathc s c th gim mc ri ro ca mt danh mc u t. a dng

    ha trn thc t c tc dng rt tt trong hu ht cc iu kin thtrng khi h s tng quan nm mc tng i n nh, n khngbao gi l mt hng s hon ho. y l l do ti sao mt s nh ut phc tp sn lng nhng c phiu khng c mi tng quan noc. Thc t l, nhiu qu u t ri ro chuyn tm kim nhng tisn khng tng quan, v sau u t di hn hoc ngn hn vochng. (Mt khon u t ngn hn bao gm c vic mn v bn

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    c phiu m bn khng s hu vi nh mua li c phiu y khi n

    gim gi sau ny. Trong u t ngn hn, gi tr ca khon u ttng ln khi gi c phiu rt xung. iu ny hon ton tri ngcvi nhng g hu ht cc nh u t mong mun).

    Tuy nhin, i a s cc nh u t khng phi lc no cng laovo tnh ton h s tng quan trc khi quyt nh tng thm mtvi m c phiu no vo danh mc u t ca h. Buffett cngth. Cc chuyn gia phn tch nh lng c th lm iu ny rtthng xuyn, nhng rt t, nu khng mun ni l khng c nhu t bnh thng no li i tnh h s tng quan trc khi raquyt nh u t. H khng cn phi tnh lm g c!

    Sau y l mt v d n gin cho thy l do ti sao trong hu htcc trng hp, s suy l thng thng mt trong nhng khi nimc Warren Buffett a thch cng c tc dng tng t. Gi s

    bn thch General Motors (GM) v quyt nh mua mt s c phiuca h. Nu GM l c phiu duy nht m bn s hu th r rng bnang c mt danh mc u t ht sc ri ro. Mt s ri ro c th nhhng n tt c cc c phiu. Tuy nhin, mt s ri ro ch tc ngn GM. Nu nn kinh t bt u ri vo suy thoi, xc sut ln lton b th trng chng khon s b nh hng. Nhng nu GM

    khng k c mt hp ng thun li vi cng on ca mnh thy l mt ri ro ch dnh cho GM. Nhng rc ri vi cng on cngty kh c th nh hng n gi tr ca nhiu c phiu khc.

    May mn l bn c th gim nh kh nng chu nh hng bimt s ri ro ca ring GM bng cch mua thm mt loi c phiukhc vo danh mc u t ca mnh. R rng, mua c phiu ca

    cng ty Ford Motor khng c nhiu ngha lm. Xt cho cng th

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    Ford v GM u hot ng trong mt ngnh v cng chu tc ng

    ca mt s ri ro ging nhau. Thc ra, Ford cng phi thng lngvi cng on tng t nh GM m thi. Nu bn thc s mungim mc ri ro cho danh mc ca mnh, tt hn ht hy muathm c phiu t mt cng ty trong mt ngnh khng c tng quanvi GM. Mt ng c vin tt c th l c phiu sng gi (blue-chipstock, cn c gi l c phiu dn dt) trong lnh vc cng nghnh Microsoft.

    Chc chn cc chuyn vin trong ngnh s tn ng, nhngkhng phi h da vo suy lun hp l thng thng. H s ni rngGM v Microsoft s to ra mt danh mc tt hn so vi GM v Fordbi v h s tng quan gia GM v Microsoft thp hn h s tngquan gia GM v Ford. Thc ra, khi bn tr ph t vn, bt c gios ti chnh no cng sn lng chng minh iu ny cho bn bng

    cch thc hin php phn tch hi quy v s thc s tnh ra con s cth. Nhng mc phc tp ny qu tht l khng cn thit. Thayvo , bn c th ch lm nh Warren Buffett vn thng lm sdng s suy lun hp l thng thng.

    Buffett khng s hu GM hoc Microsoft, nhng trc gic chong bit rng vic b sung c phiu Microsoft vo danh mc c GM

    s gim ri ro nhiu hn so vi vic b sung Ford vo danh mc .Xt k hn th Microsoft v GM thuc nhng ngnh hon ton khcnhau. H s khng b tc ng bi nhiu yu t ri ro ging nhau.Nu gi v xe tng ln, n s tc ng n li nhun ca GM. Nhnggi v xe cao hn khng th nh hng n li nhun ca Microsoft!Tri li, Ford v GM c nhiu im chung. V th, c nhiu khnng mt bin c tc ng n cng ty ny cng s tc ng n

    cng ty kia.

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    NHIU HN = TT HN, HAY NHIU HN N GIN CH

    L NHIU HN?

    Gi s bn quyt nh b sung mt s c phiu Microsoft vodanh mc u t ca mnh. Bn c th gim ri ro hn na bngcch mua thm c phiu th ba khng? D nhin l bn c th. Ltng nht l bn nn tm kim mt c phiu khng c s tngquan no vi c GM ln Microsoft. C l mt cng ty kinh doanh cs h tng nh Duke Energy l thch hp nht.

    Vic gim ri ro ph thuc khng ch vo mc tng quanvi nhau gia cc c phiu trong cng mt danh mc, m cn da vos lng c phiu trong danh mc . Bn cng b sung thm nhiuc phiu vo danh mc u t th bn cng gim thiu c ri ro.

    Cho n nay, Buffett v nhng ngi thch p dng phng

    php thin v ton hc c rt nhiu im chung. Tuy nhin, nhngkhc bit thng xut hin khi bn t cu hi bao nhiu c phiu l. Nhng ngi thc s tin vo l thuyt qun l danh mc u thin i chng ta tm gi h l nhng ngi cc oan ni rngkhng c gii hn no c. Bn c vic b sung thm bt c c phiuno m bn thch. Cng nhiu cng vui. Bn nn nh rng, theonhng ngi cc oan, mi c phiu phi thuc v mt danh mc

    c a dng ha ph hp. Thc ra, c th h s khuyn nh u tnn trnh mua nhng c phiu n l. Thay vo , h s c vncho nh u t chuyn tin vo nhng qu u t. Cc qu u t,c th l mt qu tng h hoc qu chng khon tng hp ETF(6),

    (6) ETF - Exchange Traded Fund: Qu chng khon tng hp ETF (hay Qu trao i th trngETF). y l mt qu do cc nh u t gp vn. Ton b s tin do cc nh u t gp vn sc tri u ra mua mt lot cc c phiu ca mt ch s no nh S&P 500 hay Nasdaq100 hoc mt m c phiu i din cho mt loi hng ha no . Qu ny cp cc chng chs hu cho cc nh u t v chng ch ny cng c nim yt ti th trng chng khon.Tuy nhin, gi ca cc chng ch ny bin ng lin tc v c th c mua bn sut ngy. Cnqu tng h c nh gi mt ln trong ngy v tt c cc giao dch trong ngy c thchin theo gi . Qu ETF cng mang li mt s li th v thu so vi qu tng h.

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    thng u t vo mt r c phiu ln c bao gm trong mt ch

    s th trng c bit. V d, qu u t theo di ch s S&P 500 baogm tt c 500 c phiu.

    Warren Buffett s khng chp nhn li khuyn kiu ny. Chcchn ng khng s dng tin ca Berkshire mua tht nhiu cphiu. ng xem tng ny l s l lng v hai l do rt n gin.Trc ht, ngay c khi l thuyt l ng v tt c cc c phiu uthuc v mt danh mc a dng ha, iu ny cng khng th thchin c trong thc tin. Th hai, thm ch nu mt ai c th xoayx mua c c phiu ca tt c cc cng ty m h c th mua, th hcng ch mua nhng c phiu tt v trnh cc c phiu xu, tt nhingi s rng bn c kh nng phn bit c s khc nhau gia chng.

    Chng ta hy xem xt k hn tng lp lun ny. D nhin, s vcng kh khn, nu khng ni l khng th, cc c nhn mua c

    phiu ca tt c cc cng ty i chng tn ti trn th trng. Nhngngy nay, bn c th t c gn nh vy bng cch mua c phiuca cc qu u t. C v s qu tng h v qu ETF tn ti trnth trng theo st mi ch s. Dng nh mi ngy c mt quu t mi xut hin trn th trng. Nu bn mua s lng v loichng khon ln t nhng qu u t ny, bn c th thc s

    tip cn i a s cc c phiu trn th trng m khng cn trc tipmua chnh cc c phiu ny. Ngy nay, cc nh u t trn khp thgii hon ton c th tip cn hu ht nhng c phiu ca M bngcch ny. Nhng ngi cc oan rt ng h chin lc ny.

    C l bn s cm thy ngc nhin khi bit rng Buffett cngngh vy t nht dnh cho nhng nh u t bnh thng. Ha ra

    l ngi chn c phiu v i nht th gii ngh rng cc nh u t

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    bnh thng khng nn la chn c phiu. Thay vo , con ngi

    lm nn mt gia ti khng l bng cch ch nm gi vi c phiuchn lc li ngh rng cc nh u t bnh thng ch nn mua cphiu ca cc qu u t. Trong mt bui ni chuyn trng ihc Florida nm 1998, Buffett ni rng: C l hn 99% nhngngi tham gia u t nn a dng ha mt cch rng ri. Thm chtrong th gi c ng nm 2003, ng vit: Nhng qu u t cgi mua rt thp (nh qu Vanguards) thng thn thin vi nh

    u t theo ng bn cht ca n v l s la chn tt nht cho huht nhng ngi mun s hu chng khon.

    Nhng nhn xt trn c l to ra c sc cho tt c nhng fanhm m Buffett v h lun c gio hun tin rng chin lc ut tt nht l ch mua c phiu ca mt vi cng ty tt nht m thi.Buffett v cnh tay phi ca mnh l Charlie Munger thm ch cn

    s dng nhng t ng ch nho s a dng ha v ca ngi s tptrung ha trong danh mc. Hu ht nhng quyn sch vit vBuffett u nhn mnh n s xem thng ca ng i vi vn adng ha v s thch tp trung ha ca ng. Vy s tht nm u?iu g c th gii thch s i lp r rng ny? Thng ip thc sca Buffett l g?

    Buffett mun ni rng a dng ha khng dnh cho ng, nhngn hon ton c li cho hu nh tt c nhng ngi khc. Nh bnc th thy, Berkshire Hathaway hon ton khng s hu c phiuca mt qu u t no c. Chc chn Buffett s xem vic mang tinca Berkshire i mua c phiu qu u t l ng ngn. R rng ngtin rng cc nh u t bnh thng nn lm theo nhng g ng ni,ch khng phi nhng g ng lm.

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    Cng trong bui ni chuyn y i hc Florida, ng tip tc

    gii thch rng a dng ha l mt tng ti i vi nhng ngithc s hiu c cch nh gi doanh nghip. ng ni vi khnthnh gi rng nu h thc s gii trong k nng nh gi doanhnghip, th s hu c phiu ca khong su cng ty l mc a dngha ti a m h cn c.

    Nh bn c th tng tng, ti sn c nhn ca Buffett honton khng c a dng ha. Thc t, phn ln ti sn ca ng cu t vo c phiu Berkshire Hathaway. V trong nhiu nm qua,ti sn ca Berkshire cha h c xem l c a dng ha ngmc. Nhng Berkshire ang tri qua mt qu trnh chuyn bin.Ngy nay, danh mc u t ca Berkshire tr nn a dng hahn bt c lc no trong lch s ca cng ty.

    Berkshire tr nn qu to ln v c qu nhiu tin dnh cho

    u t, nn h khng th khng a dng ha. S tng trng thn kca Berkshire buc Buffett phi tin hnh mt thay i chin lcmnh m. Nhng hng mc u t hin nay ca Berkshire r rngang pht i nhng tn hiu cho thy c s chuyn i trong chinlc t tp trung ha sang a dng ha. Tuy phng php tip cnny gip Berkshire tr thnh mt cng ty t ri ro hn, nhng n cng

    c th lm gim nhng khon thu nhp trong tng lai. Tht ra, bnthn Buffett cnh bo rng Berkshire s khng th to ra mc thunhp trong tng lai nh n lm c trong qu kh. n gin chv Berkshire tr nn qu ln c th lm c iu .

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    VN NM BIN

    Nu Buffett khng phn i s a dng ha nh uy tn trcgi ca ng buc chng ta tin nh vy, th ti sao ng li ch qu lunh th a dng ha ti sn ca Berkshire? Nh chng ta thy,mt cu tr li c th l lc trc ng khng cn phi lm vy. KhiBerkshire cn l mt cng ty nh, vic tp trung ha cc hng mcu t ca n rt d dng. Gi y cng ty tr nn qu ln nnvic tp trung ha tr nn kh khn hn.

    Nhng cn c nhiu kha cnh khc ca cu chuyn ngoi imny. Bn hy nh li l do ti sao cc chuyn gia cho rng a dng hal iu nn lm: v a dng ha gip gim ri ro. Bn cng a nhiuc phiu vo mt danh mc u t th ri ro cng c gim thiu.Thc t nu ln mt cu hi quan trng: mt nh u t cnthc s s hu bao nhiu loi c phiu?

    T lu Buffett nhn ra rng mc gim thiu ri ro lnnht t c khi s lng c phiu trong mt danh mc khng lnlm. Nu bn ch s hu mt loi c phiu, bn c th gim ri ro rtln bng cch ch cn b sung thm mt loi c phiu khc vo danhmc ca mnh. Nhng nu s hu hng chc c phiu, th vicmua thm mt loi c phiu khc hu nh chng gim mc ri ro

    thm cht no. Suy i xt li, thm ch bn cn c th nhn thy mc gim ri ro bin t (marginal reduction in risk) c thm t vic bsung mt loi c phiu khc vo danh mc u t ca bn thngkhng ng so vi nhng rc ri v chi ph phi b ra theo dithm mt cng ty na. Ngay c cc nh qun l qu tng h cngnhn thy chi ph s tng ln khi h tng thm c phiu vo danh

    mc qun l ca qu mnh. y l mt trong nhng khi nim l

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    thuyt phc tp khc m Buffett ch hiu c bng trc gic ca

    mnh.Do mc gim ri ro bin t s gim i khi bn b sung c

    phiu vo danh mc u t. Bn cng c th suy ngm mt cch hpl khi no l . D chng c mt con s k diu no c, nhng xtk th r rng vic b sung nhiu loi c phiu vo danh mc chmang li ngha rt t. Tuy nhin, trong cng ng nghin cu vncn nhiu s bt ng v s lng bao nhiu loi c phiu l .Nhng ngi cc oan theo l thuyt qun l danh mc u t hini cho rng danh mc ca mt nh u t nn bao gm tt c cc cphiu. H mun nhn thy cng nhiu cng tt. Nhng ngi trunglp th cm thy chng c vn g khi sng chung vi mt con shu hn. Mt s ngi th cho rng nn s hu 100 loi c phiu,mt s khc ch cn 50 loi. Thm ch, mt s ngi tin rng ch cn

    khong 20 loi l .Warren Buffett ngh g v iu ny? phn u chng, chng

    ta bit rng Buffett tin tng vic s hu khong 6 loi c phiul cho nhng ngi bit r mnh ang lm g. May mn l chngta c th kim tra danh mc ca Berkshire Hathaway xem thBuffett c lm nhng g m ng rao ging hay khng. Xt cho cng

    th Berkshire thc s l mt cng ty m. N rt ging vi mt qutng h hoc mt cng ty u t. Berkshire l mt cng ty s hunhng cng ty khc. Mt s cng ty c n s hu ton phn. mt s cng ty khc, n nm gi vn vi t l rt ln. Berkshire lmt cng ty thu mua cng ty khc rt tch cc, v th s lng cccng ty m n s hu khng ngng tng ln. Theo trang web caBerkshire v h s ng k ti y ban Chng khon Hoa K, chng

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    ta c th m c Berkshire s hu khong 70 cng ty con v c

    phn hn a s trong khong 40 cng ty i chng khc. Bng 1.1 v1.2 lit k mt s cng ty ni ting m Berkshirenm s hu(7).

    Bng 1.1: Mt s cng ty con ni ting ca Berkshire

    GEICOGeneral ReNational Indemnity

    Benjamin Moore & CoBorsheims Fine JewelryClayton HomesFruit of the LoomJohns-ManvilleJordans FurnitureNebraska Furniture Mart

    NetJetsSees CandiesShaw IndustriesWesco Financial Corp.Intl. Dairy Queen

    Do cc cng ty con c s hu ton phn nn rt kh xc nh

    gi tr chnh xc ca chng. Tuy nhin, chng ta d dng xc nhgi tr th trng ca tt c nhng cng ty i chng. V d,Berkshire s hu 200 triu c phiu Coca-Cola vo cui nm 2006c gi tr khong 9,7 t USD. thi cc kia, v th ca Berkshiretrong Pier 1 Imports (khng c lit k trong bng trn) ch c gitr khong 8,8 triu USD.

    (7) Ly t trang web ca Berkshire Hathaway v bn lu mu n 13F y ban Chng khon.

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    Bng 1.2: Gi tr th trng ca mi m c phiu i

    chng hng u ca Berkshire(Thng 12/2006)

    Cng ty Gi th trng (triu USD)

    Coca-Cola 9.650American Express 9.198Wells Fargo 7.758Procter & Gamble 6.427Moodys Corp. 3.315PetroChina 3.313Tesco 1.820Anheuser-Busch 1.792Johnson & Johnson 1.409ConocoPhillips 1.291

    Xt tt c nhng cng ty con c Berkshire s hu ton phnv nhng cng ty i chng c phn hn ca Berkshire, liu c cngbng khng khi ni rng Buffett gi y tin rng vic s hu nhiuloi c phiu cng rt c ngha? Xt cho cng th danh mc u tca Berkshire kh a dng. D nhin, ngy nay n c a dng

    ha hn so vi mt vi nm gn y. C l, cui cng Buffett phitha nhn rng vic a dng ha rng ri khng ch tt cho cc nhu t, m n cng tt cho c Berkshire na.

    Tuy nhin, s l mt kt lun sai lm, bi theo nhng ngicc oan ca l thuyt qun l danh mc u t hin i, danh mcca Berkshire vn cn mang tnh tp trung rt ln. H khng ch ni

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    Berkshire khng c s m c phiu cn thit, m cn ch ra cc

    hng mc u t ca n b mt cn i nghim trng khi xt n gitr. Tht ra, phn ln danh mc ca Berkshire c u t vo mts t cng ty, v mt khon tin tng i nh c u t vo tt cnhng cng ty khc. V d, k t thng 12/2006, danh mc c phium Berkshire nm gi c tng gi tr th trng khong 61,5 t USD.Nhng hn mt na s , khong 33 t USD, c u t vo 4cng ty m thi: Coca-Cola, American Express, Wells Fargo v

    Procter & Gamble. Khong 28 t USD cn li c u t vo tnht 36 cng ty khc.

    Tuy nhin, khng th chi ci rng danh mc c phiuBerkshire nm gi ngy nay c a dng ha hn nhiu so vi btc thi im no trong lch s ca n. Tr li nhng ngy u caBerkshire, n c u t gn nh ton b vn vo ngnh dt v bo

    him. Ngay c gn y nh nm 1998, khi cng ty tr thnh mthin tng chn ng vi gi tr vn ha th trng ln n 100 tUSD, cc c phiu c nm gi cng t c a dng ha nh mc hin nay. Nm 1998, Berkshire c mt s lng cc cng ty conthun li, nhng n tit l v th nm gi vn trong 8 cng ty ichng: American Express, Coca-Cola, Gillette, M&T Bank Corp.,PS Group Holdings, SunTrust Banks, the Washington PostCompany v Wesco Financial Corp.

    Ngay c nhng ngi trung lp trong gii hc thut v cc cngng u t chuyn nghip cng tn ng rng 8 cng ty l qu t c gi a dng ha ph hp. H cng ch ra mt s cng ty trongnhm 8 cng ty ny hot ng trong nhng ngnh ging nhau, nghal lm gim thm mc a dng ha ca Berkshire. H tranh lun

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    rng Buffett ang cc c ng tip xc vi nguy c qu cao. Tuy

    nhin, cn lu l gii hc thut thng tp trung vo ri ro tngqut. Cn Buffett tp trung vo ri ro mt li th. Gii hc thut sp li bng cch ni rng a dng ha s mang li s bo v tt chonhng ri ro mt li th v s ngn nga ph sn. Tuy nhin, h liqun rng a dng ha cng ngn bn tr nn cc k giu c.

    Nu nhn vo danh sch 400 ngi M giu nht do tp chForbes bnh chn hng nm, bn cng khng tm thy nhiu ngilm giu bng cch nm gi danh mc u t c a dng ha rngri. Top-10 trong danh sch nm 2007 c lit k trong bng 1.3di y.

    Bng 1.3: Nhng ngi giu nht nc M nm 2007

    t danh sch Forbes

    Tn Ti sn c tnh (USD) Cng ty chnhBill Gates 59 t MicrosoftWarren Buffett 52 t Berkshire HathawaySheldon Adelson 28 t Las Vegas SandsLarry Ellison 26 t OracleSergey Brin 18,5 t GoogleLarry Page 18,5 t GoogleKirk Kerkorian 18 t MGM MirageMichael Dell 17,2 t DellCharles Koch 17 t Koch IndustriesDavid Koch 17 t Koch Industries

    Bill Gates v Larry Ellison to dng c gia sn khng ltrong ngnh phn mm bng vic lp nn Microsoft v Oracle.

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    Sheldon Adelson v Kirk Kerkorian c c phn ln ti sn t

    ngnh tr chi v gii tr. Larry Page v Sergey Brin l hai nging sng lp ca Google. Tin ca Michael Dell c to ra t cngty my tnh mang tn mnh. Anh em nh Koch c tha hng giasn t cha h, ngi sng lp ra Tp on Koch Industries.

    Cng nh a s nhng ngi cc k giu c khc, ti sn caBuffett ch yu gn lin vi mt cng ty: Berkshire Hathaway.Nhng Berkshire khng h ging hu ht cc cng ty khc. Berkshirethc s l mt cng ty u t. Khi bn mua mt c phiu ph thngca Berkshire, bn ang thc s mua quyn li tt c nhng cngty m Berkshire s hu. Tuy phn u t ca Buffett vo Berkshirequ thc c th c xem l c tnh tp trung hn nhng g m lthuyt qun l danh mc u t hin i cp, nhng n mang tnha dng ha cao hn cc ti sn c i a s cc t ph M nm gi.

    Nhng s a dng ha khng phi l iu gip Buffett giu c.Ti sn ca ng l kt qu ca vic tp trung ha trong mt s t cccng ty. Cui nm 2006, gi tr vn ha th trng ca Berkshire mc 170 t USD. i vi mt cng ty u t c quy m ln n nhvy th ngay c mt danh mc u t gm khong 100 m c phiuvn c th xem l qu tp trung c bit khi phn ln tin c

    u t vo mt vi cng ty hoc c phiu. Nh chng ta thy,Berkshire c nhng khon u t khng l vo mt s t cc cng ty,v nhng khon u t kh nh trong cc cng ty cn li. N cbit tham gia su trong ngnh bo him. Thc t, cc doanh nghipbo him ca Berkshire mang v khong 1/4 doanh thu v 1/2 linhun trong nm 2006. C rt nhiu qu u t tng h vi quym ch bng mt phn nh b ca Berkshire nhng nm gi n hn

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    100 loi c phiu. Nhng rt t, nu c, cng ty no c th t ho vi

    mc thu nhp ging nh Berkshire to ra trong mt thi gian di.Hn na, c th lp lun rng chin lc tp trung ha chn lc

    ca Buffett thc s cho php ng kim sot ri ro. Khi Buffett muamt loi c phiu (thng qua Berkshire), ng khng mua ch vi trmc phiu nh hu ht chng ta vn lm. ng thng tin hnh mtkhon u t ln ngay lp tc xut hin bn tin ca cng ty.Nhng khon u t ca ng ln mang li cho ng kh nnggy nh hng n cc quyt nh qun tr. V d, Berkshire s huhn 15% trong tng s c phiu ang lu hnh ca Coca-Cola. Thct, Buffett ngi trong Hi ng Qun tr ca Coca-Cola khong 17nm. Gi y d ng khng cn l thnh vin ca hi ng qun tr,nhng bn c th tin rng ban qun tr s khng pht l nhng likhuyn ca ng, nu ng cm thy cn phi ln ting. Bn cng c th

    tin rng Gim c iu hnh Neville Isdell s phi gi li cho Buffettcng sm cng tt sau khi ng y nhn c li nhn.

    Tuy nhin, nu chin lc tp trung ha c tc dng tt choWarren Buffett th cha chc n cng s tt cho bn. Ngay c khibn c vi triu -la u t v bn quyt nh u t tt c vomt cng ty i chng ang c giao dch cng khai, nhiu c hi

    l khon tin vn khng bn c cng ty ch . Buffett skhuyn rng bn nn a dng ha s c phiu nm gi ca mnh.Tuy nhin, nu bn quyt tm theo ui chin lc tp trung ha,bn c th phi xem xt mt l trnh hon ton khc bit, chng hnnh dng tin khi nghip. L do l chin lc tp trung ha cth gip kim sot ri ro ch khi no bn c quyn nh hnh khoch kinh doanh ca cng ty v c sc nh hng n cc quyt

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    nh qun tr. Buffett tin rng nu bn khng u t tin c

    ting ni ca mnh trong cch cng ty trin khai ngun vn, th vica dng ha danh mc u t s h tr bn nhiu hn.

    CH MUA NHNG C PHIU TT

    Chng ta hy tr li lp lun th hai m chng ta nu phntrc. l chng li tng a dng ha qu mc. Nu mt danh

    mc u t c a dng ha ph hp bao gm tt c cc m cphiu, th chc chn n s bao gm c c phiu tt ln c phiu xu.Chng phi tt hn khi bn ch mua v nm gi nhng c phiu tthn m thi? R rng cu tr li l c. Tuy nhin, vn nm chkh nng nhn din u l c phiu tt. Trong khi nhng ngi mitham gia th trng ni vi bn rng c phiu tt l nhng c phiutng gi, th iu kh thc hin l phi tm ra c nhng c phiu

    tt trc khi chng tng gi. y chnh l ni m nhng k nngphn tch siu vit c t dng v, v chnh l lnh vc m Buffettvt tri hn tt c.

    Khng th no vit mt quyn sch v Warren Buffett mkhng nhc n Benjamin Graham. Graham l tc gi chnh caquyn Phn tch Chng khon(8) (1934) v Nh u t thng minh(9)

    (1949). ng l gio s ca Buffett i hc Columbia. V sau, ng thu Buffett vo lm vic ti cng ty u t ca mnh. Graham dy cho Buffett nhng gi tr v khim khuyt ca a dng ha.Graham dy Buffett phn tch k thut v la chn c phiu.Graham dy Buffett u tin cho nhng cng ty ln, b nh githp hn gi tr thc, hot ng ti chnh thn trng, vi lch sthanh ton c tc u n.

    (8) Security Analysis.

    (9) The Intelligent Investor.

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    Philip Fisher l mt thin ti v u t khc c nh hng n

    t duy ca Buffett. Fisher ging dy trng kinh doanh Stanford.ng l tc gi quyn C phiu Ph thng v Li nhun Phi thng(10)

    (1958). ng tr nn giu c khi mua c phiu ca Motorola nm1955 v nm gi chng cho n khi ng qua i nm 2004. Fisher dy cho Buffett tt c nhng g cn bit v mt doanh nghip, baogm nh cung cp, i th cnh tranh v khch hng. Fisher cndy Buffett duy tr danh mc u t mt cch tp trung v ch mua

    nhng doanh nghip m ng hiu r.

    Nh nhng ngi dn dt nh Graham v Fisher, Buffett tr thnh mt ngi la chn c phiu xut chng. Nhng nhngngi cc oan ca l thuyt qun l danh mc u t hin i chorng la chn c phiu ch l s lng ph thi gian. lm bngchng, h ch ra v s cuc nghin cu i n kt lun rng hu

    ht cc nh qun l tin chuyn nghip khng th duy tr s xut schn nhng ch s nh S&P 500 trong mt khong thi gian di.

    H cng vin dn nhng nghin cu dn n kt lun rng vicphn b ti sn cn quan trng hn c vic la chn c phiu. Nhchng ta bit phn u, phn b ti sn l qu trnh quyt nhmt nh u t nn tip cn tng lp ti sn khc nhau mc ra

    sao. Phn b ti sn s hot ng song song vi a dng ha. Phnb ti sn n gin l s a dng ha trn cc lp ti sn thay v adng ha trong tng lp ti sn.

    Mt m hnh phn b ti sn n gin c th ch xem xt balp ti sn: c phiu, tri phiu v tin mt. Nhng m hnh phc tphn s thm vo nhng lp ti sn khc nh bt ng sn, hng ha,

    tin t, kim loi qu v nhng vt liu thay th. Cn c cc lp ti sn

    (10) Common Stocks and Uncommon Profits.

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    con chn tip. V d, bao nhiu tin dnh cho c phiu nn dng

    mua c phiu ni a? Bao nhiu tin nn dnh cho c phiu ncngoi? Th trng nc ngoi no nn c b sung vo danh mcu t? Bao nhiu tin s c dnh cho nhng cng ty c gi tr vnha ln, nh v trung bnh? Cn tri phiu th sao? Bao nhiu tinnn u t vo tri phiu chnh ph, tri phiu doanh nghip, triphiu a phng v tri phiu nc ngoi?

    Bn c th thy rng vic phn b ti sn i hi phi ra nhngquyt nh v t l mt danh mc thuc tng lp ti sn. Hn na,t l ng cho nh u t ny c th khng ng cho nh u tkhc. Mt chuyn gia t vn u t chuyn nghip cn phi xem xtnhng mc tiu v rng buc ca mi nh u t ring bit. Chngc th bao gm nhng yu t nh thu hay kh nng c th (hockhng th) chu c ri ro.

    Ngoi ra, cn phi c nhng quyt nh v vic ti cn bngdanh mc u t. V d, gi s bn quyt nh dnh 60% danh mc phn b cho c phiu v 40% cho tri phiu, nu gi c phiu giatng mnh trong khi gi tri phiu st gim, bn c th nhn ra ngayrng t l ny s thay i thnh 70% c phiu v ch cn 30% triphiu. Bn c nn ti lp cn bng danh mc ca mnh t c

    t l 60%-40% ban u hay khng? Nu c th bn c nn ti lp scn bng thng xuyn trong danh mc khng? Hy nh rng nubn ti lp cn bng thng xuyn th chi ph giao dch s tng cao.Nu bn thnh thong mi ti lp cn bng, th s phn b danh mcca bn c th lch khi mc tiu bn t ra.

    y l nhng cu hi m cc nh t vn u t thng t ra.

    Nhiu chuyn gia tin rng khi ni n vic xy dng danh mc u

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    t, vn phn b ti sn cn quan trng hn nhiu so vi vic la

    chn c phiu. Mt trong nhng nghin cu u tin c trch dnrng ri nht tng c Gary Brinson, Randolph Hood v GilbertBeebower tin hnh(11). H tm hiu cc qu lng hu v kt lunrng hn 90% s bin ng trong thu nhp hng qu theo thi gianc l gii bng vic phn b ti sn. Khng n 10% l do vic xcnh thi im ca th trng hoc la chn c phiu.

    Da vo kt qu t nhng nghin cu nh th ny, ai cng cth kt lun rng nu nh u t thc s mun t gip mnh, h cth lm tt bng cch suy ngh nghim tc hn v vic phn b baonhiu tin u t vo tng lp ti sn v t lo lng hn v vic lachn nhng c phiu c th mua vo. a phn cc nh u tthng dnh rt t thi gian cho vic phn b ti sn. H s c linhiu hn bng cch suy ngh k hn v t l tin phn b cho c

    phiu, tri phiu, bt ng sn, tin mt v cc lp ti sn khc.Jack Bogle, sng lp vin ca Vanguard, cng ng vic phn

    b ti sn c ngha quan trng hn vic la chn c phiu. Nhngng ch ra rng vic phn b ti sn khng phi l mt hot ng cck kh khn hoc tn nhiu thi gian. Thc ra, cc quyt nh phnb ti sn kh n gin i vi nhng nh u t di hn nh

    Warren Buffett, ngi khng quan tm n s bin ng trong thigian ngn, chng hn theo tng qu.

    Di hn chnh xc l g? Mt s nh u t ngh n di hnl hai hoc ba nm. Vi nhng ngi khc, di hn c ngha l 5 hoc10 nm. Khi Buffett ni v di hn, ng thng m ch l vi thpk, ch khng phi vi nm. Nu ng quyt nh u t hm nay,

    ng thng khng lo lng qu nhiu v nhng g s xy ra trong nm(11) Gary Brinson, Randolph Hood v Gilbert Beebower, trch bi bo Cc yu t quyt nhhiu qu danh mc u t" ca t Financial Analysis Journal, thng 7/8, 1986.

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    ti. Thay vo , Buffett tp trung vo gi tr m khon u t c

    th t c sau 20 hoc thm ch 30 nm. ng khuyn cc nh ut nn mua c phiu nh th th trng chng khon s ng catrong 10 nm ti. iu ny th hin r thi v khung thi gianca ng. Buffett thm ch cn ni rng mi mi l khong thi gianthch hp nm gi mt c phiu no .

    Mc d Buffett khng tham gia hot ng ti lp cn bng danhmc qu thng xuyn, nhng iu khng c ngha l ng lun bdnh cht vo s bo th ca mnh. D nhin ng c tha thng minh bit rng ngoan c him khi mang li kt qu tt. Ngi ta bitng c th thay i suy ngh v quyt nh bn sm mt c phiu no. Thc ra, c nhiu khon u t m Buffett giao dch trong thigian cha y 5 nm(12). Nhng s thc vn nh c: Buffett him khitham gia mt c hi u t v ngh n chin lc thot ra ngn hn.

    ng nhn mnh iu ny trong th gi c ng nm 2005: Khngging nh nhiu t chc mua li doanh nghip khc, Berkshire khngc chin lc thoi lui(13). Chng ti mua nm gi.

    Theo quyn sch kinh in u t c phiu di hn (Stocks forthe Long Run) ca Jeremy Siegel, trng tm lu di ca Buffett c rtnhiu ngha. Siegel khm ph ra rng t 1871 n 1992, tuyt i

    khng c qung thi gian 30 nm no (d bn chn im khi ul lc no i chng na) m c phiu khng mang li hiu qu caohn tri phiu. Thm ch vi khung thi gian ch 10 nm, c phiucng c hiu qu hn tri phiu trong hn 80% thi gian u t. Vth, cng nh Buffett, bn cn u t cho di hn, bn khng cnphi dnh thi gian qu nhiu suy ngh v vic phn b ti sn.Nh Buffett, d nhin bn nn nm gi mt s tin mt v s hu

    (12) James Altucher, Trade Like Warren Buffett(Hoboken, N.J.: John Wiley & Sons, Inc., 2005).

    (13) Exit strategy.

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    mt s tri phiu, nhng nu bn thc s l nh u t di hn, bn

    nn c mt danh mc gm nhng c phiu tt nm gi lu di.Trn thc t, Buffett c l ng rng t nht 80% lng tin nnc phn b cho c phiu khi bn l nh u t di hn.

    Tt nhin, nu bn bit bn s cn nhng khon tin ln trongthi gian t 3 n 5 nm tr hc ph i hc hoc mua nh mi,bn phi tnh ton c nhng vic ny. Bn cng cn chun b sn tinmt thanh ton cc chi ph hoc phng trng hp khn cpkhng lng trc c, hoc tn dng nhng c hi y ha hnc th xut hin bt ng. Gi s bn c k hoch d phng nh vy nhng khng nh bc may ri th vic phn b phn ln cckhon u t di hn vo c phiu s c ngha rt ln.

    Cng ging nh Buffett, bn ch mun mua nhng c phiu tt.Tuy nhin, hy lu rng khng ai k c Buffett c mt lch s

    hon ho. Nh nhiu nh u t khc, Buffett cng c nhng quytnh u t thc s t hi. Tm triu c phiu Pier 1 Imports, muanm 2004, c v l khon u t t hi nht ca ng trong thi giangn y. C phiu ny rt gi 70% ngay sau khi Buffett mua ln utin. Nhng Buffett khng tn dng s lao dc ca c phiu ny bngcch mua thm gim chi ph mua bnh qun nh ng thng lm

    khi mt c phiu c ng a thch b rt gi. Thay vo , ng chn cch chp nhn khon l v bt u gim lng c phiu nmgi ca Pier 1 Imports. Mc d Buffett thch u t di hn, nhngc v ng nhanh chng nh mt s tin tng vo c phiu ny.

    iu quan trng y l mc tiu ca bn khng nn l kimc nhiu hay t tin trong mi quyt nh u t ring. Ging

    Buffett, bn nn n lc tm kim nhng khon thu nhp tt hn th

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    trng tnh trn danh mc u t ton phn ca bn trong di hn.

    Bn cn thng xuyn ra quyt nh ng hn l sai. Bn munkim tin t nhng quyt nh ng hn l phi b tr cho nhngkhon l khng th trnh khi t nhng quyt nh t hi. lmc iu ny, bn cn phi bit u l iu tt nht v khng chtrong di hn. Bn cng cn bit iu g hiu qu nht trong ngnhn. Chng ta s tm hiu thm v u t ngn hn v di hn trongnhng trang tip theo.

    TM TT CHNG 1

    a dng ha (diversification) c l l khi nim quan trng nht

    trong qun l danh mc u t. Tt c cc t vn vin ti chnh

    c nng lc v c trch nhim u thc gic khch hng ca

    mnh a dng ha danh mc u t. Tuy nhin, a dng hakhng nht thit phi l mt chin lc tt-c-hoc-khng-c-

    g. Ti sn c nhn ca Buffett chnh l kt qu ca s tp trung

    ha khng phi l a dng ha. Nu bn c trnh v nng

    lc kh v u t v phn tch ti chnh doanh nghip, hoc

    bn c th tip cn cc nh t vn c nhng k nng ny, bn

    nn trnh vic a dng ha qu mc. Nhng nu bn thiu thi

    gian hay chuyn mn nghin cu cc cng ty mt cch su

    sc v nm c tt c cc thng tin v h, bn nn a dng

    ha rng ri. Buffett khuyn nhiu ngi thc hin a dng

    ha thng qua cc qu u t.

    T nhng ngy u thnh lp, Berkshire Hathaway l mt cng

    ty u t v cng tp trung. Thm ch vo cui nhng nm

    1990, n c mt vi cng ty con v ch s hu mt s loi c

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    phiu m thi. Tuy nhin, cui cng th Berkshire s hu

    hng t c phiu v trn di 70 cng ty con. Mc d Berkshire

    ngy nay tr nn a dng ha hn bao gi ht, nhng s a

    dng ha ca n vn nm di tiu chun ca l thuyt ti

    chnh hin i. Thm ch nu bn bt u lm giu bng

    phng php tip cn tp trung ha, bn cng nn ch hn

    cho s a dng ha khi ti sn ca bn tng ln.

    Mu cht ca a dng ha u t l phi tm ra nhng loi ti

    sn khng tng quan vi nhau. Mt phng php tip cn

    n gin bng suy lun hp l thng thng cng c hiu qu

    tng ng mt phng php tip cn nh lng phc tp

    vn i hi phi tnh ton cc h s tng quan. Khi b sung

    c phiu vo danh mc u t ca mnh, bn hy trnh cc c

    phiu c th b nh hng bi nhng ri ro ging nhau. Mt

    danh mc u t c cu trc hp l ch cn mt vi loi cphiu l c th gim ri ro ln so vi mt danh mc u t

    c cu trc km v c rt nhiu m c phiu. Buffett cho

    rng mt danh mc gm khong 6 m c phiu c xem

    l a dng ha.

    Hu ht cc nh u t tch cc dnh rt nhiu thi gian c

    gng la chn c c phiu thnh cng. Tuy nhin, nhiubng chng cho thy h nn quan tm hn i vi vn phn

    b ti sn thay v la chn c phiu. Tuy nhin, cc nh u t

    di hn nh Buffett nhn thy rng duy tr mt t l phn b

    ti sn hp l khng nht nh l mt vic qu kh. Hy dnh

    thi gian suy ngh v t l tin nn phn b vo c phiu

    v nhng lp ti sn khc cng nh khi bn dnh thi gian

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    suy ngh nn mua nhng c phiu c th no. Nhng nu bn

    thc s l mt nh u t di hn, hy m bo rng danh mc

    u t ca bn c nhng liu lng c phiu khc nhau tt

    nht.

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    2MT BUFFETT BNH GI THP

    D hai ngi, ti mun ni l c Charlie Munger

    v ti, cng xem xt nhng d kin ging nhau, nhng

    hu nh chng ti khng th trnh khi vic xc nh

    gi tr ni ti khc nhau.

    - Warren Buffett, 2005

    hi cc phng vin CNBC phng vn mt nh qun l tinmt (money manager), hu nh lc no h cng gi anh ta hoc cta l mt nh qun l gi tr (value manager) hoc nh qun l tngtrng (growth manager). H to ra n tng rng gi tr v tngtrng l nhng trit l u t hon ton i lp nhau. D qun lnhng ti khon hoc qu tng h khc nhau, cc nh qun l tin

    mt hu nh lc no cng c phn loi thuc nhm ny hocnhm kia. Thc t, ton b cc qu tng h cng c phn loitheo cch trn. Bn co bch (prospectus) ca mt qu tng h scho bn bit liu h c phi l mt qu gi tr ni a vi mc vn hath trng ln, hay mt qu tng trng quc t c mc vn ha nh,hoc qu ton cu kt hp gia gi tr v tng trng vi mc vnha trung bnh, hay bt k mt kh nng kt hp no khc.

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    BUFFETT THCH C PHIU GI TR, NHNG

    NG CNG MUA C PHIU TNG TRNGNgi ta tin rng Warren Buffett l mt nh u t gi tr. Tuy

    nhin, ng c thc s nh vy hay khng cn ty thuc vo cchnh ngha gi tr ca bn trn thc t. Buffett c mt lch s mua licc cng ty c v v cng r sau mt thi gian nhn li. i khi, ngtheo ui nhng cng ty lin tc rt gi kh mnh qua mt thi gian

    di. Chin lc u t ca ng c v nht qun vi khuynh hng gitr. Tuy nhin, nhiu c phiu m Buffett mua trong nhiu nmthc s th hin s tng trng mnh m.

    S m h xut hin v cc thut nggi tr v tng trng khngphi lc no cng c nh ngha r rng. Phng php lun truynthng thng tp trung vo cc ch s gi. Cc ch s ph bin nhtl ch s P/E (Price to Earning - h s gi trn thu nhp), P/CF (Priceto Cash Flow - h s gi trn dng tin), P/B (Price to Book h sgi trn gi tr s sch), P/S (Price to Sales h s gi trn doanh thu).Nhng c phiu c cc ch s gi thp c gi l c phiu gi tr.Nhng c phiu c ch s gi cao c gi l c phiu tng trng.

    HY TM CNG TY WASHINGTON POST BNG GOOGLE

    hiu cch ngh ca Buffett, chng ta hy xem xt k hai mc phiu kh ph bin. Google tr thnh mt trong nhng cphiu nng nht trn th trng ngay sau khi n ln sn chng khonvo thng 8 nm 2004 vi gi cho bn 85 USD mt c phiu. Cphiu ny tng vt 18% v ng ca mc trn 100 USD ngay trongngy giao dch u tin. Ba nm sau khi c nim yt, c phiu

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    Google tng gi hn 6 ln. Bn s phi o tung tt c cc th

    trng mi c th tm c mt vi c phiu khc c tc tngtrng ng n nh vy ch trong mt khong thi gian ngn. Nhng,Warren Buffett cha bao gi s hu Google, d ch mt c phiu!

    Tuy nhin, gia nhng nm 1970, Buffett mua c phiucng ty Washington Post thng qua Berkshire Hathaway. Cngging nh Google, Washington Post l mt cng ty c hiu qu kinhdoanh xut sc. Thc t y l mt trong nhng hng mc u t ttnht m Buffett tng thc hin t nht da trn c s t sut thunhp. Khon u t ban u ca Berkshire vo Washington Post trgi khong 11 triu USD, n cui nm 2006 con s ny tr thnh1,3 t USD. C ngha l, t sut thu nhp ln n 11.609%, cha kn c tc!

    Trong Hnh 2.1 v 2.2, nu bn t biu bin ng gi c

    phiu ca Google v Washington Post cnh nhau, bn s thy rngchng trng kh ging nhau, ngoi tr mt im khc bit ln giahai m c phiu ny. Bn hy nhn vo trc ngang. Mc tng trngca Google c to ra trong mt khong thi gian ngn hn nhiu,cn Washington Post phi mt mt thp k hnh thnh c biu gi m Google c th to ra trong ch ba nm. Biu ca

    Washington Post cng cho thy rng c phiu ny khng tt lmtrong thi gian gn y. Thc ra, nu nhn k, bn s thy rng gic phiu Washington Post bt u yu i trong khong thi gianGoogle c nim yt. y khng ch l mt s trng hp.

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    550

    525

    500

    475

    450425

    400

    375

    350

    325

    300

    275

    250

    225

    200

    175

    150

    125

    100

    2004 2005 2006 2007

    950

    900

    850

    800

    750

    700

    650

    600

    550

    500

    450

    400

    350

    1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007

    Hnh 2.2: Biu gi c phiu ca Washington Post (ngun: Telemet America)

    Hnh 2.1: Biu gi c phiu ca Google (ngun: Telemet America)

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    Mt s nh u t c th khng ng tnh vi s nh gi ny,

    nhng xt rng ra th Google v Washington Post hot ng trongcng lnh vc kinh doanh. Suy cho cng th c hai u kim tin tvic bn qung co. Tuy nhin, c mt s im khc bit then chtgia hai cng ty ny.

    Cng ty Washington Post l mt cng ty truyn thng truynthng. N xut bn bo ni ting nht l tWashington Post, tbo trn Buffett thng th hin nhng kin ca mnh v ccvn then cht trong t nht l bn dp quan trng. N cng xutbn tp ch Newsweek v s hu su i truyn hnh. Cng ty conCable One ca n cung cp nhng dch v cp c bn v truyn hnhk thut s cho gn mt triu thu bao. Cng ty ny thm ch cn adng ha hot ng kinh doanh sang lnh vc gio dc bng cchmua li Kaplan, mt cng ty chuyn bin son ti liu luyn thi i

    hc v nhng k thi cp bng chuyn nghip khc.Cn Google l mt cng ty hot ng trc tuyn. y l mt

    cng ty mi rt k l, hot ng da trn cng ngh m nhng ngisng lp n to ra h tr ngi s dng tm kim loi thngtin trn Internet. Cng ngh ca Google th hin nhng kt qu cavic tm kim trn mng ch trong thi gian cha n 1 giy. Google

    khng phi l cng c tm kim duy nht trn th gii mng. N cmt s i th cnh tranh cng ni ting khng km, trong cMicrosoft v Yahoo!. Nhng Google nhanh chng tr thnh b mytm kim ch o vi th phn ln nht cho n nay. Google cnphn nhnh xm nhp vo hot ng phim nh trn mng. N btu to ra cng ngh phim nh ca ring mnh, cho php ngi dngng ti v chia s phim ca h. Sau , Google mua li cng ty

    YouTube vi gi 1,65 t USD. D YouTube khng c doanh thu,

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    nhng cho n nay n vn l cng ty dn u v khng gian phim

    nh trn mng. So vi cc cng ty truyn thng truyn thng nhWashington Post, Google c xem nh ang hot ng trong mtlnh vc kinh doanh mi m v th v. Cc nh phn tch mngInternet cng nh cc chuyn gia cng ngh u tuyn b rngGoogle lm mt cuc cch mng i vi cch thc tip cn thngtin ca con ngi.

    R rng, Google v Washington Post c nhiu im tngng cng nh mt s khc bit. Nh nu phn trc, mt imkhc bit then cht na l Washington Post l mt khon u t trct trong danh mc ca Berkshire, cn Google l mt c phiu mBerkshire cha bao gi nm gi. Hn na, nhiu kh nng l khi cnnm di s lnh o ca Buffett, Berkshire s khng bao gi s huGoogle. Ti sao khng? Mi bn nhn vo Bng 2.1 nhn thy

    mt s h s gi ca hai cng ty ny.Bng 2.1: H s gi ca Washington Post v Google

    (Thng 9/2007)

    H s gi Washington Post Google

    P/E 25,4 48,2P/CF 13,2 40,4P/B 2,3 9,0P/S 1,9 13,1

    C phiu Google c giao dch vi gi 570 USD khi nhng sliu ny c bin son. Cn Washington Post ang bn 800 USDmt c phiu. Da vo gi c phiu, Washington Post dng nht hn Google, nhng Buffett s lp tc nhc nh chng ta rng

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    nu ch xt ring gi th khng th xc nh c c phiu ny t

    hay r hn c phiu khc. Mc d c phiu ca Washington Post cth gi cao hn, nhng thc ra n l c phiu r hn nhiu, bi nhtrong Bng 2.1, cc h s gi ca n u nh hn nhiu so vi cc hs ca Google.

    Cc h s gi l nhng thc o ht sc quan trng trong phntch ti chnh bi chng t gi ca cc c phiu khc nhau trn cngmt thc o. Cc h s cho chng ta bit nh u t sn sng trbao nhiu cho mt loi c phiu. Nh Bng 2.1, cc nh u t snsng tr gi cao hn cho Google so vi Washington Post. Thc rah sn sng tr cao hn 48,2 ln thu nhp mua c phiu Google,nhng ch tr cao hn 25,4 ln i vi Washington Post. H sn sngtr cao hn 13,1 ln doanh thu cho Google, nhng ch tr 1,9 ln choWashington Post. L mt nh thu mua sc so, Buffett mun tr

    cng t tin cng tt cho bt c c hi u t no. Nhng c phiu ch s gi thp thng d dng kch thch s quan tm ca ng.

    Ti sao cc nh u t li mun tr tin nhiu nh th cho mtc phiu ca Google hn mt c phiu ca Washington Post? Buffetts ni rng cu tr li lin quan n s tng trng. Chnh xc hn,n lin quan n s tng trng c k vng. Vo thi im nhng

    s liu ny c bin son, c hai cng ty u c k vng tngtrng doanh thu v thu nhp. Nhng Google c k vng tngtrng vi tc nhanh hn. Thc ra, cc nh phn tch d bo thunhp ca Google c th tng trng hn 30% mt nm trong 5 nmti, trong khi tc tng trng thu nhp k vng trong 5 nm tica Washington Post ch l 8%.

    Nh u t sn sng tr nhiu tin cho c phiu Google hn l

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    do h sn sng tr thm tin cho s tng trng k vng. iu ny

    khng c g sai. i khi chnh Buffett cng th hin s sn sng trthm tin mua ly s tng trng. ng c th thch mua nhngc phiu c h s gi thp, nhng ng cng xem xt mua nhng cphiu c h s gi cao nu ng tin rng tc tng trng tng lais b p cho mc gi cao phi tr thm. Xt cho cng th mt cngty c tc tng trng k vng cao s c tr gi cao hn mt cngty tng t nhng c k vng tng trng thp hoc khng tng

    trng. Tt nhin, nh u t c th tranh ci mt cng ty tngtrng nhanh c gi tr tng thm bao nhiu, nhng chc chn nc gi tr cao hn mt cng ty c tc tng trng thp.

    Nu bn vn cha thy r iu ny, hy xem xt v d c thtip theo y. Hai c phiu A v B u c thu nhp 2 USD mt cphiu. C phiu A l ca mt doanh nghip tng trng chm,

    khng c g th v. Thu nhp ca n c k vng tng 5% mt nm.V th, trong 5 nm, thu nhp ca c phiu A s l 2,55 USD mt cphiu. Nhng thu nhp ca c phiu B c k vng tng 20%