Publication: A Model of Investor Sentiment
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Date
1998
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Elsevier
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Barberis, Nicholas, Andrei Shleifer, and Robert Vishny. 1998. A Model of Investor Sentiment. Journal of Financial Economics 49, no. 3: 307-343.
Abstract
Recent empirical research in finance has uncovered two families of pervasive regularities: underreaction of stock prices to news such as earning announcements; and overreaction of stock prices to a series of good or bad news. In this paper, we present a parsimonious model of investor sentiment--that is, of how investors form beliefs--that is consistent with the empirical findings. The model is based on psychological evidence and produces both underreaction and overreaction for a wide range of parameter values.
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