Portfolios of mortgage loans played an important role in the Great Recession and continue to compose a material part of bank assets. This chapter investigates how cross-sectional dependence in the underlying properties flows through to the loan returns, and thus, the risk of the portfolio. At...

In the Fall of 2008, Lehman Brothers had a $35 trillion derivatives portfolio, representing about 5% of the worldwide derivatives market. It was a party to approximately one million trades, under more than 6,000 ISDA master agreements.Lehman's derivatives were not the direct cause of its...