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 dynamics of bid-ask spread and trading volume using a multi-period trading model with asymmetric information and oligopolistic market makers. Market makers optimally make offsetting trades in "bid" and "ask" markets by adjusting bid and ask prices/depths to avoid holding...

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...