股票如彩票:概率加权对证券价格的影响

Stocks as Lotteries: The Implications of Probability Weighting for Security Prices

American Economic Review · 2008
被引 1591 · 同刊同年前 1%
人大 A+FT50ABS 4*

中文导读

研究累积前景理论中的概率加权如何影响资产定价,发现正偏态证券可能被高估并获得负平均超额收益,为多种金融现象提供统一解释。

Abstract

We study the asset pricing implications of Tversky and Kahneman's (1992) cumulative prospect theory, with a particular focus on its probability weighting component. Our main result, derived from a novel equilibrium with nonunique global optima, is that, in contrast to the prediction of a standard expected utility model, a security's own skewness can be priced: a positively skewed security can be “overpriced” and can earn a negative average excess return. We argue that our analysis offers a unifying way of thinking about a number of seemingly unrelated financial phenomena.

概率加权累积前景理论偏度定价资产定价