We present CoMargin, a new methodology to estimate collateral requirements for central counterparties (CCPs) in derivatives markets. CoMargin depends on both the tail risk of a given market participant and its interdependence with other participants. Our approach internalizes market...

This paper quantifies the effects of improving public equity markets on macroeconomic aggregates and welfare. I use an open-economy extension of Angeletos (2007), where entrepreneurs face idiosyncratic productivity risk in privately held firms. They can diversify by investing in publicly traded...

This paper explores the reliability of using prices of credit default swap contracts (CDS) as indicators of default probabilities during the 2007/2008 financial crisis. We use data from the Canadian financial system to show that these publicly available risk measures, while indicative of initial...

The authors study a general-equilibrium economy in which agents have the ability to invest in a risky technology. The investment risk cannot be fully insured with optimal contracts, because shocks are private information. The authors show that the presence of these risks may lead to an...

The four essays published here provide a useful overview for anyone interested in understanding the issues and policy environment surrounding financial system stability. The first three essays consider different aspects of the question, What is financial stability/instability? The first essay,...

The author analyzes a general-equilibrium model of a heterogeneous agents economy in which the agents are subject to borrowing constraints and uninsurable idiosyncratic production risk. In particular, he addresses the impact of these frictions on entrepreneurial investment and illustrates the...

This paper studies the interaction between adverse selection, liquidity risk and beliefs about systemic risk in determining market liquidity, asset prices and welfare. Even a small amount of adverse selection in the asset market can lead to fire-sale pricing and possibly to a market breakdown if...