We study the impact on asset prices of illiquidity associated with search and bargaining in an economy in which agents can trade only when they find each other. Marketmakers' prices are higher and bid-ask spreads are lower if investors can find each other more easily. (...)

In a model with heterogeneous-risk-aversion agents facing margin constraints, we show how securities' required returns are characterized both by their betas and their margin requirements. Negative shocks to fundamentals make margin constraints bind, lowering risk-free rates and raising Sharpe...

This book is about the pricing of liquidity. We present theory and evidence on how liquidity affects securities prices, why liquidity varies over time, how a drop in liquidity leads to a drop in prices, and why liquidity crises create liquidity spirals. The analysis has implications for traders,...