"Since June 2007, the creditworthiness of structured finance products has deteriorated rapidly. The number of downgrades in November 2007 alone exceeded 2,000 and many downgrades were severe, with 500 tranches downgraded more than 10 notches. Massive downgrades continued in 2008. More than...

"For nearly a decade prior to the collapse of structured finance markets in late 2007, securitization by collateralized loan obligations (CLOs) was a key source of capital for the high-yield corporate loan market. In this paper, we investigate whether securitization was associated with risky...

"We demonstrate that a rapid expansion in the supply of mortgages driven by disintermediation explains a large fraction of recent U.S. house price appreciation and subsequent mortgage defaults. We identify the effect of shifts in the supply of mortgage credit by exploiting within-county...