Anatomy of the Bank Runs in March 2023
Runs have plagued the banking system for centuries and returned to prominence with the bank failures in early 2023. In a traditional run—such as depicted in classic photos from the Great Depression—depositors line up in front of a bank to withdraw their cash. This is not how modern bank runs occur: today, depositors move money from a risky to a safe bank through electronic payment systems. In a recently published staff report, we use data on wholesale and retail payments to understand the bank run of March 2023. Which banks were run on? How were they different from other banks? And how did they respond to the run?
Documenting Lender Specialization
Robust banks are a cornerstone of a healthy financial system. To ensure their stability, it is desirable for banks to hold a diverse portfolio of loans originating from various borrowers and sectors so that idiosyncratic shocks to any one borrower or fluctuations in a particular sector would be unlikely to cause the entire bank to go under. With this long-held wisdom in mind, how diversified are banks in reality?
Why Do Banks Fail? Bank Runs Versus Solvency
Evidence from a 160-year-long panel of U.S. banks suggests that the ultimate cause of bank failures and banking crises is almost always a deterioration of bank fundamentals that leads to insolvency. As described in our previous post, bank failures—including those that involve bank runs—are typically preceded by a slow deterioration of bank fundamentals and are hence remarkably predictable. In this final post of our three-part series, we relate the findings discussed previously to theories of bank failures, and we discuss the policy implications of our findings.
Why Do Banks Fail? The Predictability of Bank Failures
Can bank failures be predicted before they happen? In a previous post, we established three facts about failing banks that indicated that failing banks experience deteriorating fundamentals many years ahead of their failure and across a broad range of institutional settings. In this post, we document that bank failures are remarkably predictable based on simple accounting metrics from publicly available financial statements that measure a bank’s insolvency risk and funding vulnerabilities.
Why Do Banks Fail? Three Facts About Failing Banks
Why do banks fail? In a new working paper, we study more than 5,000 bank failures in the U.S. from 1865 to the present to understand whether failures are primarily caused by bank runs or by deteriorating solvency. In this first of three posts, we document that failing banks are characterized by rising asset losses, deteriorating solvency, and an increasing reliance on expensive noncore funding. Further, we find that problems in failing banks are often the consequence of rapid asset growth in the preceding decade.
Banking System Vulnerability: 2024 Update
After a period of relative stability, a series of bank failures in 2023 renewed questions about the fragility of the banking system. As in previous years, we provide in this post an update of four analytical models aimed at capturing different aspects of the vulnerability of the U.S. banking system using data through 2024:Q2 and discuss how these measures have changed since last year.
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.
A Retrospective on the Life Insurance Sector after the Failure of Silicon Valley Bank
Following the Silicon Valley Bank collapse, the stock prices of U.S banks fell amid concerns about the exposure of the banking sector to interest rate risk. Thus, between March 8 and March 15, 2023, the S&P 500 Bank index dropped 12.8 percent relative to S&P 500 returns (see right panel of the chart below). The stock prices of insurance companies tumbled as well, with the S&P 500 Insurance index losing 6.4 percent relative to S&P 500 returns over the same time interval (see the center panel below). Yet, insurance companies’ direct exposure to the three failed banks (Silicon Valley Bank, Silvergate, and Signature Bank) through debt and equity was modest. In this post, we examine the possible factors behind the reaction of insurance investors to the failure of Silicon Valley Bank.
Internal Liquidity’s Value in a Financial Crisis
A classic question for U.S. financial firms is whether to organize themselves as entities that are affiliated with a bank-holding company (BHC). This affiliation brings benefits, such as access to liquidity from other affiliated entities, as well as costs, particularly a larger regulatory burden. This post highlights the results from a recent Staff Report that sheds light on this tradeoff. This work uses confidential data on the population of broker-dealers to study the benefits of being affiliated with a BHC, with a focus on the global financial crisis (GFC). The analysis reveals that affiliation with a BHC makes broker-dealers more resilient to the aggregate liquidity shocks that prevailed during the GFC. This results in these broker-dealers being more willing to hold riskier securities on their balance sheet relative to broker-dealers that are not affiliated with a BHC.
Physical Climate Risk and Insurers
As the frequency and severity of natural disasters increase with climate change, insurance—the main tool for households and businesses to hedge natural disaster risks—becomes increasingly important. Can the insurance sector withstand the stress of climate change? To answer this question, it is necessary to first understand insurers’ exposure to physical climate risk, that is, risks coming from physical manifestations of climate change, such as natural disasters. In this post, based on our recent staff report, we construct a novel factor to measure the aggregate physical climate risk in the financial market and discuss its applications, including the assessment of insurers’ exposure to climate risk and the expected capital shortfall of insurers under climate stress scenarios.