Anmerkungen:
Nach Informationen von SSRN wurde die ursprüngliche Fassung des Dokuments October 1999 erstellt
Beschreibung:
We develop a theory of stock-market crashes based on differences of opinion among investors. Because of short-sales constraints, bearish investors do not initially participate in the market and their information is not revealed in prices. However, if other, previously-bullish investors have a change of heart and bail out of market, the originally-more-bearish group may become the marginal quot;support buyersquot;, and hence more will be learned about their signals. Thus accumulated hidden information tends to come out during market declines. The model helps explain a variety of stylized facts, including: 1) large movements in prices unaccompanied by significant news about fundamentals; 2) negative skewness in the distribution of market returns; and 3) increased correlation among stocks in a falling market. In addition, the model makes a distinctive out-of-sample prediction: that negative skewness will be most pronounced conditional on high trading volume