We build a new asset pricing framework to study the effects of aggregate illiquidity on asset prices, volatilities and correlations. In our framework the Black-Scholes economy is obtained as the limiting case of perfectly liquid markets. The model is consistent with empirical studies on the...

We construct a state space model for measuring real economic activity in real time (e.g., minute by minute) using a variety of stock and flow data, observed at mixed frequencies. Our data set comprises macroeconomic and financial variables: GDP, IP, unemployment, stock and bond market data, and...