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Asset allocation in the Athens Stock Exchange: A variance sensitivity analysis

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Author Info
Panayiotis Diamandis (Department of Business Administration, Athens University of Economics and Business)
Georgios Kouretas () (Department of Economics, University of Crete)
Leonidas Zarangas (Department of Finance and Auditing, Technological Educational Institute of Epirus)

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Abstract

This paper provides an analysis of asset allocation using univariate portfolio GARCH models from the Athens Stock Exchange. We use daily data for the period January 1997 to February 2005. Our analysis adopts the methodology due to Manganelli (2004) and we are able to recover from the univariate approach the multivariate dimension of the portfolio allocation problem. Manganelli (2004) suggests that such a dual problem can be solved with the application of a variance sensitivity analysis which considers the change in the portfolio variance induced by an infinitesimal change in the portfolio allocation. Our main findings are based on the estimation of the variance sensitivity for a portfolio of two assets and the way sensitivity has been changing over time and this has implications for risk management. In addition we compute the second derivative of the estimated variance with respect to portfolio weights and this gives an indication of the benefits arising from diversification at any given point of time.

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File URL: http://www.soc.uoc.gr/econ/wpa/docs/AseAlloc.pdf
File Format: application/pdf
File Function: First version, 2006
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Publisher Info
Paper provided by University of Crete, Department of Economics in its series Working Papers with number 0602.

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Length: 27 pages
Date of creation: Feb 2006
Date of revision:
Handle: RePEc:crt:wpaper:0602

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Related research
Keywords: asset allocation GARCH models risk management sensitivity analysis

Find related papers by JEL classification:
C53 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Forecasting and Other Model Applications
G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Mortgages
G28 - Financial Economics - - Financial Institutions and Services - - - Government Policy and Regulation

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  1. Bollerslev, Tim & Engle, Robert F & Wooldridge, Jeffrey M, 1988. "A Capital Asset Pricing Model with Time-Varying Covariances," Journal of Political Economy, University of Chicago Press, vol. 96(1), pages 116-31, February. [Downloadable!] (restricted)
  2. Olivier Ledoit & Pedro Santa-Clara & Michael Wolf, 2003. "Flexible Multivariate GARCH Modeling with an Application to International Stock Markets," The Review of Economics and Statistics, MIT Press, vol. 85(3), pages 735-747, 07. [Downloadable!] (restricted)
  3. Christian Gourieroux & J. P. Laurent & Olivier Scaillet, 2000. "Sensitivity Analysis of Values at Risk," Econometric Society World Congress 2000 Contributed Papers 0162, Econometric Society. [Downloadable!]
    Other versions:
  4. Simone Manganelli & Vladimiro Ceci & Walter Vecchiato, 2002. "Sensitivity analysis of volatility - a new tool for risk management," Working Paper Series 194, European Central Bank. [Downloadable!]
  5. Engle, Robert F. & Kroner, Kenneth F., 1995. "Multivariate Simultaneous Generalized ARCH," Econometric Theory, Cambridge University Press, vol. 11(01), pages 122-150, February. [Downloadable!]
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  6. Carol Alexander, 2000. "Orthogonal Methods for Generating Large Positive Semi-Definite Covariance Matrices," ICMA Centre Discussion Papers in Finance icma-dp2000-06, Henley Business School, Reading University. [Downloadable!]
  7. Simone Manganelli, 2004. "Asset Allocation by Variance Sensitivity Analysis," Journal of Financial Econometrics, Oxford University Press, vol. 2(3), pages 370-389. [Downloadable!] (restricted)
  8. Robert F. Engle & Kevin Sheppard, 2001. "Theoretical and Empirical Properties of Dynamic Conditional Correlation Multivariate GARCH," University of California at San Diego, Economics Working Paper Series 2001-15, Department of Economics, UC San Diego. [Downloadable!]
    Other versions:
  9. Ludger Schuknecht & Felix Eschenbach, 2002. "Sensitivity analysis of volatility: a new tool for risk management," Working Paper Series 191, European Central Bank. [Downloadable!]
  10. Bollerslev, Tim, 1990. "Modelling the Coherence in Short-run Nominal Exchange Rates: A Multivariate Generalized ARCH Model," The Review of Economics and Statistics, MIT Press, vol. 72(3), pages 498-505, August. [Downloadable!] (restricted)
  11. Tim Bollerslev & Jeffrey M. Wooldridge, 1988. "Quasi-Maximum Likelihood Estimation of Dynamic Models with Time-Varying Covariances," Working papers 505, Massachusetts Institute of Technology (MIT), Department of Economics.
  12. repec:cup:etheor:v:11:y:1995:i:1:p:122-50 is not listed on IDEAS
  13. Nijman, Theo & Sentana, Enrique, 1996. "Marginalization and contemporaneous aggregation in multivariate GARCH processes," Journal of Econometrics, Elsevier, vol. 71(1-2), pages 71-87. [Downloadable!] (restricted)
    Other versions:
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