René M. Stulz is the Everett D. Reese Chair of Banking and Monetary Economics at the Fisher College of Business at The Ohio State University. This post is based on a recent paper by Mr. Stulz; James Tompkins, Professor of Finance at Kennesaw State University; Rohan Williamson, Professor of Finance at Georgetown University McDonough School of Business; and Zhongxia (Shelly) Ye, Associate Professor of Accounting at the University of Texas at San Antonio Carlos Alvarez College of Business.
Though the Dodd-Frank Wall Street Reform and Consumer Protection Act (DFA) passed in July 2010 required bank holding companies with more than $10 billion of assets to have a board risk committee, a majority of the banks required to have a risk committee had one before the legislation. The presumption of the legislators apparently was that having a board risk committee would reduce bank risk-taking. As far as we know, there was no scientific evidence at the time suggesting that requiring the establishment of a risk committee for banks that did not have one would be valuable either for the banks’ owners or for the financial system. We develop a model of whether a bank should have a risk committee and show that for a bank that maximizes shareholder wealth there is no expectation that a board risk committee causes bank risk-taking to decrease. Our empirical analysis finds no support for the proposition that the existence of a board risk committee decreases bank risk-taking. We use unique interview data to assess how bank risk committees work and whether they act as expected with our theory. We find that risk committees play a role that is consistent with our theory except that they also seem to be a way for regulators to monitor and influence risk-taking within banks. Though a well-functioning risk committee can be valuable to a bank’s shareholders, it is also possible for the risk committee to worsen the communication and engagement of a bank’s board. Therefore, having a risk committee only makes sense for banks where risk-taking is sufficiently complex that risk metrics have to be monitored by a specialized committee.