Tobias Adrian and Markus K. Brunnermeier*

Wonk alert: technical content — During the 2007-09 financial crisis, we saw that losses spread rapidly across institutions, threatening the entire financial system. Distress spread from structured investment vehicles to traditional deposit-taking banks and on to investment banks, and the failures of individual institutions had outsized impacts on the financial system. These spillovers were realizations of systemic risk—the risk that the distress of an individual institution, or a group of institutions, will induce financial instability on a broader scale, distorting the supply of credit to the real economy. In this post, we draw on our working paper “CoVaR”—issued in the New York Fed’s Staff Reports series—to do two things: first, propose a new measure of systemic risk and, second, outline a method that can help bring about the early detection of systemic risk buildup.