Many empirical studies suggest that correlated demand is important in driving liquidity commonality among stocks. However, there are still no theoretical studies on how demandside factors cause and affect liquidity and return commonality. We propose a tractable equilibrium model with asymmetric...

Market makers in some financial markets often make offsetting trades and have significant market power. We develop a market making model that captures these market features as well as other important characteristics such as information asymmetry and inventory risk. In contrast to the existing...

We study the effect of the rise of indexing on price discovery. We show that this effect critically depends on the causes of the rise of indexing and the cost structure of information acquisition. If the rise of indexing is due to increased cost of participating in the non-index market, then the...

Most existing portfolio choice models ignore the prevalent periodic market closure and the fact that market volatility is significantly higher during trading periods. We find that market closure and the volatility difference across trading and nontrading periods significantly change optimal...

Most existing portfolio choice models ignore periodic market closure and the fact that market volatility is significantly higher during trading periods. We show that market closure and the volatility difference across trading and nontrading periods significantly change optimal trading strategies...

We propose a novel and tractable equilibrium model to study how information asymmetry, competition among market makers, and investors' risk aversion affect asset pricing, market illiquidity and welfare. The main innovation is that market makers compete through choosing simultaneously quantities...

The extant literature concludes that binding short-sale constraints restrict negative information revelation because short sellers cannot trade to the full extent to reveal their information. However, it largely ignores information conveyed by informative sales. In contrast, our model predicts...