We build a general equilibrium model to examine the implications of prospect theory for the disposition effect, asset prices, and trading volume. Diminishing sensitivity predicts a disposition effect, price momentum, a reduced return volatility, and a positive return-volume correlation. Loss...

We develop a mixed-duopoly model in which a private firm competes against a state owned enterprise (SOE) who cares about social welfare and is privately informed of market demand. When the SOE's social concerns are sufficiently important and when the market competitiveness is sufficiently low,...

We study a model to explore the (dis)connect between market efficiency and real efficiency when real decision makers learn information from the market to guide their actions. We emphasize two channels that determine whether the two efficiency concepts are aligned. The "externality channel" says...

This paper studies information sharing between strategic investors who are privately informed about asset fundamental with different precision levels. We find that a coarsely informed investor would always share her information “as is” if her counterparty investor is well informed about the...