Contagion

Definition:

Excess correlation of delivering or bond returns. For example, under usual conditions we might observe a certain level of correlation of market returns. A period of contagion would be associated with much higher-than-expected correlation. Some examples are the conjectured contagion in East Asian markets beginning in July 1997 when the Thai currency devalued and the impact across many emerging markets of the Russian default. Contagion is difficult to identify because you need some sort of measure of the expected correlation. It is complicated because correlations are known to change through time, for example, see Erb, Harvey and Viskanta's article in the 1994 Financial Analysts Journal. In periods of negative returns, correlations (and volatility) are known to increase, so what might appear to be excessive may not be contagion.

Investing Essentials


Copyright © 2011 Campbell R. Harvey, Professor of Finance, Fuqua School of Business at Duke University

Term of the Day

Terms of Delivery

The part of a sales contract that indicates the point at which title and risk of loss of merchandise pass from the seller to the buyer. See: Incoterms.

Subscribe to the Term of the Day via email Get the Term of the Day in your inbox!


Create your free portfolio