Catastrophe insurance differs from regular insurance in that individual claims are correlated and insurers have to pay more clients at once, which creates a liquidity strain. In this paper, I show two related findings: first, that when customers know their claims are correlated, this correlation...

A major policy challenge posed by derivatives clearinghouses is that their collateral requirements can rise sharply in times of stress, reducing market liquidity and further exacerbating downturns. Smoothing sharp changes in collateral requirements - an approach known as through-the-cycle...