Author : Mico Loretan
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.:/5 (318 download)
Book Synopsis Evaluating "correlation Breakdowns" During Periods of Market Volatility by : Mico Loretan
Download or read book Evaluating "correlation Breakdowns" During Periods of Market Volatility written by Mico Loretan and published by . This book was released on 2000 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Financial market observers have noted that during periods of high market volatility, correlations between asset prices can differ substantially from those seen in quieter markets. For example, correlations among yield spreads were substantially higher during the fall of 1998 than in earlier or later periods. Such changes in correlations could reflect changes in the underlying distribution of returns or quot;contagionquot; across markets that is present only during periods of market turbulence. However, as noted by Boyer, Gibson and Loretan (1999), increases in the volatility of returns are generally accompanied by an increase in sampling correlations even when the true correlations are constant. We show that this result is not just of theoretical interest: When we consider quarterly measures of volatility and correlation for three pairs of asset returns, we find that the theoretical relationship can explain much of the movement in correlations over time. We then examine the implications of this link between measures of volatility and correlation for risk management, bank supervision, and monetary policy making.