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The Role of Realized Volatility in the Athens Stock Exchange

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Author Info
Dimitrios Thomakos
Michail Koubouros

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Abstract

Using a newly developed dataset of daily, value-weighted market returns we construct and analyze the monthly realized volatility of the Athens Stock Exchange (A.S.E.) from 1985 to 2003. Our analysis focuses on the distributional and time series properties of the realized volatility series and on assessing the connection between realized volatility and returns through an multi-factor asset pricing model. In particular, we finnd strong evidence on the existence of a volatility feedback e¤ect and the leverage e¤ect, and on the existence of asymmetries between lagged returns and volatility. Furthermore, we examine the cross-sectional distribution of unconditional loadings on the realized risk factor(s) for different sets of characteristics-sorted common stock portfolios. We find that realized risk is a significantly priced factor in A.S.E. and its high explanatory power for the cross-section of portfolio average returns is independent of any return variation related to the market (CAPM) or size and book-to-market (Fama-French) factors. We discuss our findings in the context of the recent literature on realized volatility and feedback effects, as well as the literature on the pricing power of realized risk.

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Paper provided by University of Peloponnese, Department of Economics in its series Working Papers with number 0020.

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Length: 35 pages
Date of creation: 2008
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Handle: RePEc:uop:wpaper:0020

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Related research
Keywords: realized volatility; leverage e¤ect; volatility feedback e¤ect; asset pricing; A.S.E.;

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