Cifarelli, Giulio and Paladino, Giovanna (2009): Oil and portfolio risk diversification.
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The growing presence of financial operators in the oil market has brought about the diffusion of techniques - such as feedback trading - which lead to departures of prices from their fundamental values and increase their variability. Oil price changes are here associated with changes in stocks, bonds and effective USD exchange rate. The feedback trading mechanism is combined with an ICAPM scheme. This original model is estimated in a four asset CCC GARCH non linear framework, where the risk premium and the feedback trading components of the conditional means are multiplicative functions of the system’s conditional variances and covariances. The empirical analysis, which encompasses the 2008-2009 financial crisis, identifies a structural change in the year 2000. From then on oil returns tend to become more reactive to the remaining assets of the model and feedback trading more pervasive. A comparison is drawn between three and four asset minimum variance portfolios in the two sub-periods, 1992-1999 and 2000-2009. Indeed, the trade-off between risk and returns – measured here by the average return per unit of risk index – indicates that in the last decade oil diversifies away the empirical risk of our portfolio.
|Item Type:||MPRA Paper|
|Original Title:||Oil and portfolio risk diversification|
|Keywords:||Oil price dynamics; feedback trading; multivariate GARCH; portfolio allocation.|
|Subjects:||G - Financial Economics > G1 - General Financial Markets > G12 - Asset Pricing; Trading volume; Bond Interest Rates
G - Financial Economics > G1 - General Financial Markets > G11 - Portfolio Choice; Investment Decisions
Q - Agricultural and Natural Resource Economics; Environmental and Ecological Economics > Q4 - Energy > Q40 - General
|Depositing User:||Giulio Cifarelli|
|Date Deposited:||24. Jan 2011 07:42|
|Last Modified:||11. Feb 2013 19:18|
Andrews DWK. 1993. Tests for Parameter Instability and Structural Change with Unknown Change Point. Econometrica 61 : 821-856.
Bhar R, Nikolova B. 2009. Oil Prices and Equity Returns in BRIC Countries. The World Economy 32 : 1036-1054.
Bollerslev T, Wooldridge JM. 1992. Quasi-Maximum Likelihood Estimation and Dynamic Models with Time-Varying Covariances. Econometric Reviews 11 : 143-172.
Boyer B, Zheng L. 2009. Investor Flows and Stock Market Returns. Journal of Empirical Finance 16 : 87–100.
Cifarelli G, Paladino G. 2009. Oil Price Dynamics and Speculation. Energy Economics, doi : 10.1016/j.eneco.2009.08.014.
Cutler DM, Poterba JM, Summers LH. 1991. Speculative Dynamics and the Role of Feedback Traders. American Economic Review 80 : 63-68.
Dean WG, Faff R. 2008. Feedback Trading and the Behavioural CAPM: Multivariate Evidence across International Equity and Bond Markets. Mimeo Monash University: Australia.
Engle RF, Ng VK. 1993. Measuring and Testing the Impact of News on Volatility. Journal of Finance 48 : 1749-1778.
Geman H, Kharoubi C. 2008. WTI Crude Oil Futures in Portfolio Diversification: the time to maturity effect. Journal of Banking and Finance 32 : 2553-2559.
Jenrich RI. 1970. Asymptotic χ2 Test for the Equality of two Correlation Matrices. Journal of the American Statistical Association 65 : 904–912.
Kaufmann RK. 2010. The Role of Market Fundamentals and Speculation in Recent Price Changes for Crude Oil. Energy Policy doi:10.1016/j.enpol.2010.09.018.
Koutmos G. 1997. Feedback Trading and the Autocorrelation Pattern of Stock Returns: Further Empirical Evidence. Journal of International Money and Finance 16 : 625-636.
Koutmos G, Saidi R. 2001. Positive Feedback Trading in Emerging Capital Markets. Applied Financial Economics 11 : 291-297.
Lakonishok J, Shleifer A, Vishny RW. 1992. The Impact of Institutional Investors on Stock Prices. Journal of Financial Economics 32 : 23-43.
Ledoit O, Wolf M. 2008. Robust Performance Hypothesis Testing with the Sharpe Ratio. Journal of Empirical Finance 15 : 850-859.
Lee Y-H, Liu H-C, Chiu C-L. 2008. Nonlinear Basis Dynamics for the Brent Crude Oil Markets and Behavioral Interpretation: a STAR-GARCH Approach. International Research Journal of Finance and Economics 14 : 51-60.
Maronna RA, Yohai VJ. 1995. The Behavior of the Stahel-Donoho Robust Multivariate Estimator. Journal of the American Statistical Association 90, 330-341.
Merton R. 1973. An Intertemporal Asset Pricing Model. Econometrica 41 : 867-888.
Newey W, West K.1987. A Simple Positive Semi-Definite, Heteroskedasticity and Autocorrelation Consistent Covariance Matrix. Econometrica 55 : 703-708.
Nofsinger JR, Sias RW. 1999. Herding and Feedback Trading by Institutional and Individual Investors. Journal of Finance 54 : 2263-2295.
Roache SK. 2008. Commodities and the Market Price of Risk. IMF Working Paper WP/08/221.
Sadorsky P. 1999. Oil Price Shocks and Stock Market Activity. Energy Economics 21 : 449-469.
Scruggs JT. 1998. Resolving the Puzzling Intertemporal Relation between the Market Risk Premium and Conditional Market Covariance: a Two Factor Approach. Journal of Finance 53 : 575-603.
Sentana E, Wadhwani S. 1992. Feedback Trading and Stock Return Autocorrelations: Evidence from a Century of Daily Data. Economic Journal 102 : 415-425.
Shiller RJ. 1984. Stock Prices and Social Dynamics. Brookings Papers on Economic Activity 2 : 457-498.
Viceira LM. 2007. Bond Risk, Bond Return Volatility, and the Term Structure of Interest Rates. Harvard Business School Working Papers 07-082.