This paper shows how to map predictions of theoretical models of market microstructure into operational empirical measures of liquidity. A meta-model implies an empirical measure of liquidity, denoted L, which describes various characteristics of trading and funding liquidity such as trading...

We study a simple model of market making in which high-frequency market makers can cancel limit orders quickly after receiving an adverse signal. The resulting winner's curse induces low-frequency market makers to widen bid-ask spreads. Liquidity in the market may deteriorate unless...

We build a model of the financial sector to explain why adverse asset shocks in good economic times lead to a sudden drying up of liquidity. Financial firms raise short-term debt in order to finance asset purchases. When asset fundamentals worsen, debt induces firms to risk-shift; this limits...