We provide a simple and intuitive measure of interdependence of asset returns and/or volatilities. In particular, we formulate and examine precise and separate measures of return spillovers and volatility spillovers. Our framework facilitates study of both non-crisis and crisis episodes, including trends and bursts in spillovers, and both turn out to be empirically important. In particular, in an analysis of sixteen global equity markets from the early 1990s to the present, we find striking evidence of divergent behavior in the dynamics of return spillovers vs. volatility spillovers: Return spillovers display a gently increasing trend but no bursts, whereas volatility spillovers display no trend but clear bursts.
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Length: 15 pages Date of creation: Jan 2007 Date of revision: Handle: RePEc:koc:wpaper:0705
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Find related papers by JEL classification: F30 - International Economics - - International Finance - - - General G15 - Financial Economics - - General Financial Markets - - - International Financial Markets F36 - International Economics - - International Finance - - - Financial Aspects of Economic Integration
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