The Federal Reserve collects data on the financing activities of the primary government securities dealers. Some market analysts argue that the data show a considerable rise in dealer leverage in recent years. However, a close reading of the data suggests that dealer borrowing involving...

This paper models the impact of arbitrageurs on stock prices when arbitrageurs are uncertain about the drift of the dividend process of a risky asset. Under perfect information, the presence of risk-neutral arbitrageurs unambiguously reduces the volatility of asset returns. When arbitrageurs are...

We define CoVaR as the value at risk (VaR) of financial institutions conditional on other institutions being in distress. The increase of CoVaR relative to VaR measures spillover risk among institutions. We estimate CoVaR using quantile regressions and document significant CoVaR increases among...