Can I Speak to Your Supervisor? The Importance of Bank Supervision

In March of 2023, the U.S. banking industry experienced a period of significant turmoil involving runs on several banks and heightened concerns about contagion. While many factors contributed to these events—including poor risk management, lapses in firm governance, outsized exposures to interest rate risk, and unrecognized vulnerabilities from interconnected depositor bases, the role of bank supervisors came under particular scrutiny. Questions were raised about why supervisors did not intervene more forcefully before problems arose. In response, supervisory agencies, including the Federal Reserve and Federal Deposit Insurance Corporation, commissioned reviews that examined how supervisors’ actions might have contributed to, or mitigated, the failures. The reviews highlighted the important role that bank supervisors can play in fostering a stable banking system. In this post, we draw on our recent paper providing a critical review and summary of the empirical and theoretical literature on bank supervision to highlight what that literature tells us about the impact of supervision on supervised banks, on the banking industry and on the broader economy.