final project report- portfolio analysis
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Portfolio Analysis
Joanna Pimento
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1.Executive Summary
The Project analyzes the various factors affecting the Exchange Traded Funds offered by Motilal
Oswal Asset Management Company. The aim of this project was to develop a model using
Regression Analysis that would explain the correlation between various variables and the ETFs.
The analysis mainly tested the significance of interest rates, GDP, Inflation and equity Indices on
the ETFs.
ETF NAVs, Daily Returns on the underlying Indices and the Index Values were used as
dependant variables in individual regression models. The CRISIL G10 Values, CCIMIBOR,
Inflation and GDP were the main predictors. The regression results focused on comparing R-
Square, Adjusted R-Square, and P-Values of the regression coefficients.
Using Microsoft Office Excel and Minitab, the analysis began with simple linear regression
models, then added and modified variables into multiple regression models and finally
concluded with Lagged Distributed regression models.
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Contents
1. Executive Summary. 2
2. Analysis of ETF NAVs.. 4
2.1.
Most Shares M50 4
3. Analysis of Index Values Of the Benchmark Index 5
3.1. NIFTY INDEX Analysis 5
4. Analysis of Daily Returns on the Benchmark Index. 6
4.1. NIFTY Daily Returns.. 6
4.2. CNXMCAP Daily returns. 7
4.3. NASDAQ Daily Returns 7
4.4. Gold Daily returns.. 7
5. Lagged Distributed Models. 8
6. Time Series Plots.. 10
6.1. NIFTY v/s CCIMIBOR without Time Lag. 10
6.2. NIFTY v/s CCIMIBOR with Time Lag. 11
7. Autoregressive Models 12
7.1. NIFTY Daily Returns. 12
7.2. CNXMCAP Daily Returns. 12
8. Comparison of Regression Models. 13
9. Conclusion. 15
10.References 16
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2.Analysis of ETF NAVs
Objective:To determine the significance of interest rates, inflation, GDP and Gold Commodity
on the Net Asset Values of Most Shares M50.
Methodology:
Data for a period of 2 years is collected and suitably interpolated for missing values.
Using Excel, the NAV Values of the ETF is independently regressed with the above
mentioned variables.
The Level Of significance is set at 0.05.
If the P-values of the regression coefficients are lower than 0.05 we reject the null
hypothesis that the coefficient is zero, thus concluding our coefficient is statistically
significant.
Most Shares M50
Period: March 2011- Feb2013
Response Variable: M50 NAVs
Predictor Variables: CCIMIBOR, CRISIL G10 INDEX, CRISIL G10 RETURNS, MONTHLY INFLATION, GDP,
GOLD Commodity.
Results
Predictors Correlation R square Intercept P-Values Coefficient/slope P-Values
CCIMIBOR 45.06% 20.30% 103.38 9.83E-153 -3.63 4.02E-26
CRISIL G10 INDEX 46.27% 21.41% 16.24 0.001 0.03 1.25E-27
INFLATION 14.86% 2.21% 79.88 5.49E-09 -0.73 4.88E-01
GDP 3.56% 0.13% 69.77 0.13 0.0002 0.94
GOLD Commodity 11.99% 1.44% 79.78 1.54E-138 -7.23E-05 0.007
CRISIL G10 INDEX has the highest correlation with M50 NAVS.
The Highest R-Square value suggests that the regression model using CRISIL G10 INDEX is better
suited for the analysis when compared with the other variables.
The intercept column gives the predicted value of M50 NAVS, if the predicted variables were
forecasted to be zero.
From the P-values we conclude that excluding GDP all other variables are statistically significant.
Inflation and CCIMIBOR have a negative relationship withM50 NAVs, while the other variables
will positively influence on M50 NAVs.
The slope column gives values of M50 NAVs when the predictor variable changes by one unit.
Again the P-values indicate that excluding GDP all other variables are statistically significant.
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3.Analysis of the Index Values
Objective:To determine the significance of interest rates, inflation, GDP and Gold Commodity
on the Values of the benchmark Index.
Methodology:
Data for a period of 5 years is collected and suitably interpolated for missing values.
Using Excel, the Index values itself is independently regressed with the above
mentioned variables.
The Level Of significance is set at 0.05.
If the P-values of the regression coefficients are lower than 0.05 we reject the null
hypothesis that the coefficient is zero, thus concluding our coefficient is statistically
significant.
NIFTY Index
Period: March 2008- Feb2013
Response Variable: NIFTY Index
Predictor Variables: CCIMIBOR, CRISIL G10 INDEX, CRISIL G10 RETURNS, MONTHLY INFLATION, GDP,
GOLD Commodity.
Results
Predictors Correlation R square Intercept P-Values Coefficient/slope P-Values
CCIMIBOR 19.71% 3.88% 4451.68 2.59E-12 74.58 2.59E-12
CRISIL G10 INDEX 39.66% 15.73% 659.58 0.02 2.16 6.27E-48
CRISIL G10 Returns 3.26% 0.11% 4942.80 0.00 -6183.73 0.25
INFLATION 35.86% 12.86% 4152.78 4.81E-21 101.97 0.005
GDP 63.73% 40.61% -159.21 0.92 0.42 0.003
Gold Commodity 56.25% 31.64% 3369.46 3.20E-292 0.03 2.71E-104
GDP has the highest correlation with NIFTY INDEX.
The Highest R-Square value suggests that the regression model using GDP is better suited for theanalysis when compared with the other variables.
The intercept column gives the predicted value of the NIFTY INDEX, if the predicted variables
were forecasted to be zero.
The zero P-values for CCIMIBOR, CRISIL G10 Returns, CRISIL G10 INDEX, INFATION and GOLD
suggest that the intercept values are statistically significant.
However the GOLD Commodity slope coefficient is most significant in the analysis.
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4. Analysis of Daily Returns on the underlying Index
Objective:To determine the significance of interest rates, inflation, GDP and Gold Commodity
on the Daily returns on the benchmark Index.
Methodology:
Data for a period of 5 years is collected and suitably interpolated for missing values.
Using Excel, the daily returns on each Index are independently regressed with the above
mentioned variables.
The Level Of significance is set at 0.05.
If the P-values of the regression coefficients are lower than 0.05 we reject the null
hypothesis that the coefficient is zero, thus concluding our coefficient is statistically
significant.
i) NIFTY Daily Returns
Period: March 2008- Feb2013
Response Variable: Daily Returns on NIFTY
Predictor Variables: CCIMIBOR, CRISIL G10 INDEX, CRISIL G10 RETURNS, WPI MONTHLY INFLATION, GDP
(Quarterly), GOLD Commodity
Results:
Predictors Correlation R square Intercept P-Values Coefficient/slope P-Values
CCIMIBOR 5.00% 0.25% 0.26% 0.09 -0.04% 0.08
CRISIL G10 INDEX 4.40% 0.19% -0.95% 0.13 0.0005% 0.12
CRISIL G10 Returns 3.87% 0.15% 0.00% 0.94 14.67% 0.17
INFLATION 34.12% 11.64% 0.35% 0.02 -0.05% 0.01
GDP 10.95% 1.20% -0.25% 0.66 0.000021% 0.66
GOLD Commodity 0.22% 0.0005% 0.02% 0.63 5.197E-10 0.94
4. Inflation has the highest correlation with NIFTY daily Returns.
5. The Highest R-Square value suggests that the regression model using inflation is better suited for the
analysis when compared with the other variables.
6.
The intercept column gives the predicted value of the daily returns on NIFTY, if the predictedvariables were forecasted to be zero.
7. From the P-values we conclude that only inflation is statistically significant in our analysis.
8. Inflation and CCIMIBOR have a negative relationship with NIFTY daily returns, while the other
variables will positively influence NIFTY returns.
9. The slope column gives the change in NIFTY returns when the predictor variable changes by one
unit. Again the P-values indicate only inflation to be statistically significant.
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ii.
CNXMCAP Returns
Response Variable: Daily Returns on CNXMCAP
Results:
Predictors Correlation R square Intercept P-Values Coefficient/slope P-Values
CCIMIBOR 10.24% 1.05% 0.005 0.0006 -0.07% 0.0003
CRISIL G10 INDEX 5.02% 0.25% -0.010 0.080 0.0005% 0.078
CRISIL G10 Returns 5.41% 0.29% 0.000 0.98 18.36% 0.06
INFLATION 38.06% 14.48% 0.005 0.006 -0.06% 0.003
GDP 7.63% 0.58% -0.002 0.78 0.000018% 0.76
iii.
NASDAQ Returns
Response Variable: Daily Returns on NASDAQ
Results:
Predictors Correlation R square Intercept P-Values Coefficient/slope P-Values
CCIMIBOR 4.35% 0.19% 0.003 0.06 -0.03% 0.13
CRISIL G10 INDEX 1.57% 0.02% -0.003 0.65 0.0002% 0.58
CRISIL G10 Returns 2.68% 0.07% 0.001 0.18 -9.80% 0.35
INFLATION 28.42% 8.07% 0.002 0.01 -0.02% 0.03
GDP 27.34% 7.47% -0.004 0.33 0.000035% 0.26
iv.
Gold Returns
Response Variable: Daily Returns on NASDAQ
Results:
Predictors Correlation R square Intercept P-Values Coefficient/slope P-Values
CCIMIBOR 4.36% 0.19% 0.002 0.05 -0.03% 0.13
CRISIL G10 INDEX 0.12% 0.0001% 0.000 0.93 0.00001% 0.97
CRISIL G10 Returns 3.21% 0.10% 0.001 0.08 -9.50% 0.26
INFLATION 5.77% 0.33% 0.000 0.86 0.01% 0.66
GDP 6.48% 0.42% 0.001 0.52 -0.000004% 0.79
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5. Lagged Distributed Models
Objective: To study the relationship between timed lagged values of the variables in
consideration.
Methodology:
NIFTY daily Returns are regressed with lagged values of CCIMIBOR.
Each CCIMIBOR Lag Value is treated as an independent Variable.
The first Model consisted of 16 independent variables regressed with NIFTY daily returns.
The r egressi on equat i on i s
NI FTY = 0. 00424 + 0. 00320 Lag 1 + 0. 00137 Lag 2 - 0. 00180 Lag 3 - 0. 00170Lag 4- 0. 00171 Lag 5 + 0. 00290 Lag 6 + 0. 000261 Lag 7 - 0. 00162 Lag8-0. 000778 Lag 9 - 0. 00290 Lag 10 + 0. 00112 Lag 11 + 0. 00149 Lag 12- 0. 00202 Lag 13 + 0. 00155 Lag 14 - 0. 000599 Lag 15 + 0. 000615 Lag16
The adjusted R-Square, P Values of the Maximum Lag term Coefficient, The Akaike informationcriteria and the Schwartz information criteria are used to analyze the model.
If the model was found to be inadequate, the Lag (q) was reduced by 1 and a new model consisting
of q-1 variables is then tested until the lowest p-value was obtained.
Results
*AIC: Akaike Information Criteria
SIC: Schwarz Information Criteria
LAG (q Days) R-SQUARE Adjusted R-Square P-Value Of q Co-
efficient
AIC* SIC*
LAG 16 8.1% 6.9% 0.382 0.000271 0.000291
LAG 15 8.1% 6.9% 0.713 0.000271 0.000289LAG 14 8.1% 7.0% 0.033 0.000270 0.000288
LAG 13 7.7% 6.7% 0.108 0.000273 0.000289
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Inference:
From the table above the P-value of the 16th
coefficient is greater than 0.05. Hence we cannot
reject the null hypothesis and the variable is dropped from the model.
In a similar way by the above tabulated results, the regression model with 15 lagged variables
is also rejected. The best suited regression model consists of 14 lagged variables giving a r-Square of 8.1% .The
increase in the adjusted R-Square value suggests that the dropping the LAG 15 and LAG 16 is
better suited for the analysis.
The r egressi on equat i on i s
NI FTY = 0. 00429 + 0. 00308 Lag 1 + 0. 00149 Lag 2 - 0. 00185 Lag 3 - 0. 00169Lag4- 0. 00169 Lag 5 + 0. 00291 Lag 6 + 0. 000270 Lag 7 - 0. 00164 Lag 8- 0. 000772Lag 9 - 0. 00285 Lag 10 + 0. 00117 Lag 11 + 0. 00144 Lag 12- 0. 00199 Lag 13 +0. 00148 Lag 14
Since the P-Value of the 14th
coefficient is less than 0.05 we keep the variable in the model.
If the Lag 14 variable was dropped, the adjusted R-Square of the LAG 13 Model decreasessuggesting that the dropped variable reduced the efficiency of the model.
Lastly comparing the AIC and SIC the LAG 14 model having lowest AIC and SIC is best suited for
the analysis.
Calculations:
AIC=
SIC= /
Model RSS
Total Obs
(n)
Regressors
(K) 2K/N RSS/N AIC K/N N^(K/N) SIC
LAG 16 0.322324 1222 17 0.02782324 0.00026 0.000271 0.013912 1.103942 0.000291
LAG 15 0.322549 1223 16 0.02616517 0.00026 0.000271 0.013083 1.097467 0.000289LAG 14 0.322644 1224 15 0.0245098 0.00026 0.000270 0.012255 1.091039 0.000288
LAG 13 0.326837 1225 14 0.02285714 0.00027 0.000273 0.011429 1.084658 0.000289
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6. Time-Series Plots
Objective:To compare models Time lagged Models with Simple Linear models with the help of Time
Series Plots.
1.
NIFTY Daily Returns Regressed with CCIMIBOR (NO TIME LAG)
R-Square: 0.25%
Known NIFTY returns plotted along with Predicted NIFTY Returns obtained from the
regression model using CCIMIBOR (without lag) as the independent variable.
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NIFTY Returns
Predicted NIF TY Returns
Variable
Time Series Plot of NIFTY Returns, Predicted NIFTY Returns
NIFTY Daily Returns predicted from the regression model do not follow the same trend as the known
NIFTY Returns. This Model is not suitable for the analysis.
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2.
NIFTY daily Returns Regressed with CCIMIBOR (LAG 14 Model)
R-Square: 8.1%
Known NIFTY returns plotted along with Predicted NIFTY Returns obtained from the
regression model using CCIMIBOR (with a 14 day lag) as the independent variable.
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Date
Data
NIFTY Returns
Predicted NIFTY Returns
Variable
Time Series Plot of NIFTY, Predicted NIFTY
In comparison to the earlier Time series Plot (with no time lag), NIFTY Returns predicted from
the Lag 14 Model are closer to the known NIFTY Returns.
Conclusion:
The Regression model using a 14 day lag period for the CCIMIBOR values as independent
variables is better suited for the analysis on NIFTY Returns as compared to a model with no time
lag.
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7.Autoregressive Models
Objective: To determine the significance of lagged values of the dependant variable in the regression
equation.
Methodology:
Lagged values of the dependant variable ranging from lag 1 to lag 15 are added to the Regression
equations obtained above.
Results:
Dependant Variable: NIFTY Daily Returns
Independent Variables R-Square Adjusted R-Square
CCIMIBOR Lag 7, CRISIL G10 Lag 14 0.80% 0.60%
CCIMIBOR Lag 7, CRISIL G10 Lag 14, NIFTY Lag 1 0.90% 0.70%
CCIMIBOR Lag 7, CRISIL G10 Lag 14, NIFTY Lag 1, NIFTY Lag 2 1.00% 0.70%CCIMIBOR Lag 7, CRISIL G10 Lag 14, NIFTY Lag 1, NIFTY Lag 2,Nifty Lag 3 1.00% 0.60%
Dependant Variable: CNXMCAP Daily Returns
Independent Variables R-Square Adjusted R-Square
CCIMIBOR LAG 10,CRISIL G10 LAG 14 2. 8% 2. 6%
CCIMIBOR LAG 10, CRISIL G10 LAG 14,CNXMCAP LAG 1 2. 9% 2. 7%
CCIMIBOR LAG 10, CRISIL G10 LAG 14,CNXMCAP LAG 1-LAG2 3. 0% 2. 6%
CCIMIBOR LAG 10, CRISIL G10 LAG 14,CNXMCAP LAG 1-LAG3 3. 0% 2. 6%
Based on all of the above analysis using linear, multiple and lagged distribute models the following
models are setup in conclusion
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1. Comparison of Regression Models
Model 1:Dependant Variable: CNXMCAP Daily Returns
Independent Variable: Lagged NIFTY Daily Returns
Table 8.1
Independent Variables R-Square Adjusted R-SquareNifty Lag 1- Nifty Lag 15, Lag 30, Lag 60 5.40% 4.00%
Nifty Lag 1- Nifty Lag 15, Lag 30 5.40% 4.20%
Nifty Lag 1- Nifty Lag 15 5.40% 4.20%
Nifty Lag 1- Nifty Lag 14 5.40% 4.30%
Nifty Lag 1- Nifty Lag 13 5.10% 4.10%
Nifty Lag 1- Nifty Lag 12 5.10% 4.20%
Nifty Lag 1- Nifty Lag 11 5.00% 4.10%
Nifty Lag 1- Nifty Lag 10 5.00% 4.20%
Nifty Lag 1- Nifty Lag 9 4.80% 4.10%
Nifty Lag 1- Nifty Lag 8 4.60% 4.00%Nifty Lag 1- Nifty Lag 7 4.20% 3.70%
Nifty Lag 1- Nifty Lag 6 4.00% 3.60%
Nifty Lag 1- Nifty Lag 5 3.90% 3.60%
Nifty Lag 1- Nifty Lag 4 3.90% 3.60%
Nifty Lag 1- Nifty Lag 3 4.00% 3.70%
Nifty Lag 1-Nifty Lag 2 3.30% 3.10%
Nifty Lag 1 2.80% 2.80%
Compare the colored models from table 8.1 with the corresponding models in table8.2.
Table 8.2
Independent Variables R-Square Adjusted R-Square
NIFTY Daily Returns (No lag) 75.10% 75.10%
NIFTY (No Lag), Nifty Lag1- Nifty Lag 14 78.50% 78.20%
NIFTY (No lag),Nifty Lag 1- Nifty Lag 10 78.50% 78.30%
Nifty No Lag, Nifty Lag 1- Nifty Lag 3 78.30% 78.20%
Nifty No Lag, Nifty Lag 1- Nifty Lag 2 77.50% 77.40%
Inference: The NIFTY Daily Returns without any Time LAG are largely significant in the analysis.
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Model 2
Dependant Variable: CNXMCAP Daily Returns
Independent Variable: NIFTY, CCIMIBOR LAG 10, CRISIL G10 LAG 14
Model 3
Dependant Variable: CNXMCAP Daily Returns
Independent Variable: NIFTY, CCIMIBOR, CRISIL G10
R-Sq = 75.5%
R-Sq(adj) = 75.5%
Model 4
Dependant Variable: NIFTY Daily Returns
Independent Variable: CNXMCAP, CCIMIBOR LAG 14, CRISIL G10 LAG 7
The regression equation is
CNXMCAP = 0.00083 + 0.759 Nifty - 0.000308 CCIMIBOR LAG 10+ 0.000001 CRISIL G10 LAG 14
R-Sq = 75.3%
R-Sq(adj) = 75.3%
The regression equation is
CNXMCAP = - 0.00122 + 0.772 Nifty - 0.000419 CCILMIBOR + 0.000002 CRISIL G10 INDEX
The regression equation is
NIFTY = - 0.00274 + 0.000200 CCIMIBOR LAG 14 + 0.000001 CRISIL G10 LAG 7+0.986CNXMCAP
R-Sq = 0.8%
R-Sq(adj) = 0.6%
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9. Conclusion
The R-Square values obtained in the analysis were relatively low until another equity index was added to
the regression model. The linear models explained at the start attained a maximum R-Square of 21%
when the NAVs of the ETFs were used as dependant variable. When the Daily Returns on the underlyingindex were regressed the maximum R-square value was 15% and using the Index values itself as the
dependant variable explained 40% influence of the predictors.
However when time lagged values of the predictors were used in the regression, model efficiency
increased by approximately 8%. A 14day Lag in CCIMIBOR influenced NIFTY Returns to a larger extent
than CCIMIBOR without lag. Autoregressive models did not approach a R-Square greater than 5%
indicating lagging the dependant variable was not significant.
Finally when NIFTY Returns were added to the model having CNXMCAP as the dependent variable an
R-Square of 75% was obtained clearly indicating a strong relation of the two indices. Lagging the values
of NIFTY Returns in the model is not appropriate for the analysis as indicated by Model 1. As model 3
suggest lagging values of interest rates has a negligible change in model efficiency suggesting the central
parameter is the NIFTY index to explain variation in CNXMCAP Returns.
In conclusion Interest rates, GDP, inflation do not have a very strong influence on Index Returns. A
regression model consisting of these parameters is not efficient to understand factors affecting ETFs.
Variation in CXMCAP Daily Returns is most efficiently explained by NIFTY Daily Returns.
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10. References
Books:
Gujarati, Damodar N: Basic Econometrics, 4th
Edition, Tata McGraw Hill
Koop, Gary: Analysis of Economic Data, 3rdEdition.
Abner, David J.: The ETF Handbook: How to Value Exchange Traded Funds, Wiley Finance
Google Scholar:
1. Pricing Efficiency of Exchange Traded Funds- Pavel Prusevic
2. The pricing Of China region ETFs- An empirical Analysis-
-Yao Zheng- University of New Orleans
-Eric Osmer-University of New Orleans
3. A Cost-Performance Analysis of Exchange Traded Funds: Evidence from iShares
By Gerasimos G. Rompotis_
Websites:
Motilal Oswal Asset Management Company.
http://www.motilaloswal.com/Asset-Management
http://www.mostshares.com
Wikipedia
http://en.wikipedia.org/wiki/Bayesian_information_criterion
http://en.wikipedia.org/wiki/Akaike _information_criterion
Pearson Education
http://www.aw-bc.com/info/studenmund/Chapter6.pdf
Office of the Economic Advisor
http://eaindustry.nic.in/Key_Economic_Indicators/Key_Economic_Indicators.pdf
Investopedia
http://www.investopedia.com/university/advancedbond/advancedbond5.asp
CRISIL
http://crisil.com/capital-markets/10yr-gilt-index.html
Data Source:
Office of the Economic Advisor:http://eaindustry.nic.in/
RBIs Database Warehouse:http://dbie.rbi.org.in
http://www.motilaloswal.com/Asset-Managementhttp://www.motilaloswal.com/Asset-Managementhttp://www.mostshares.com/http://www.mostshares.com/http://en.wikipedia.org/wiki/Bayesian_information_criterionhttp://en.wikipedia.org/wiki/Bayesian_information_criterionhttp://en.wikipedia.org/wiki/Akaike%20_information_criterionhttp://en.wikipedia.org/wiki/Akaike%20_information_criterionhttp://www.aw-bc.com/info/studenmund/Chapter6.pdfhttp://www.aw-bc.com/info/studenmund/Chapter6.pdfhttp://eaindustry.nic.in/Key_Economic_Indicators/Key_Economic_Indicators.pdfhttp://eaindustry.nic.in/Key_Economic_Indicators/Key_Economic_Indicators.pdfhttp://www.investopedia.com/university/advancedbond/advancedbond5.asphttp://www.investopedia.com/university/advancedbond/advancedbond5.asphttp://crisil.com/capital-markets/10yr-gilt-index.htmlhttp://crisil.com/capital-markets/10yr-gilt-index.htmlhttp://eaindustry.nic.in/http://eaindustry.nic.in/http://eaindustry.nic.in/http://dbie.rbi.org.in/http://dbie.rbi.org.in/http://dbie.rbi.org.in/http://dbie.rbi.org.in/http://eaindustry.nic.in/http://crisil.com/capital-markets/10yr-gilt-index.htmlhttp://www.investopedia.com/university/advancedbond/advancedbond5.asphttp://eaindustry.nic.in/Key_Economic_Indicators/Key_Economic_Indicators.pdfhttp://www.aw-bc.com/info/studenmund/Chapter6.pdfhttp://en.wikipedia.org/wiki/Akaike%20_information_criterionhttp://en.wikipedia.org/wiki/Bayesian_information_criterionhttp://www.mostshares.com/http://www.motilaloswal.com/Asset-Management