The 2023 Banking Crisis Lessons: SVB, Signature, and First Republic

Introduction

The collapse of Silicon Valley Bank, Signature Bank, and First Republic Bank in spring 2023 was the most significant US banking crisis since 2008 and the most relevant case study for understanding how interest rate risk, deposit concentration, and regulatory gaps can destroy even large, seemingly well-capitalized institutions. The three failures cost the FDIC Deposit Insurance Fund approximately $31.5 billion, triggered a systemic risk exception for the first time since the Global Financial Crisis, and reshaped the regulatory framework for mid-size banks. For FIG bankers, this crisis is essential knowledge: it directly informs how deposit franchises are valued in bank M&A, how AOCI affects capital analysis, and why interviewers test candidates on the distinction between HTM and AFS securities.

Silicon Valley Bank ($209 billion in assets) failed on March 10, 2023, after depositors attempted to withdraw $42 billion in a single day, with another $100 billion in withdrawals queued for the following morning. The root cause was a massive duration mismatch: SVB had invested deposit inflows from the 2020-2021 tech boom into a $91.3 billion HTM securities portfolio (primarily agency MBS with 10+ year maturities and a weighted-average duration of 6.2 years). When the Fed raised rates aggressively, the portfolio's fair value dropped by approximately $18 billion below book value. On March 8, SVB announced it had sold $21 billion in AFS securities at a $1.8 billion loss and would raise $2.25 billion in new equity. The announcement triggered panic among its tech and VC depositor base, 94% of whom held uninsured balances above the $250,000 FDIC limit.

Signature Bank ($110.4 billion in assets) was closed on March 12, two days after SVB. Signature's vulnerability stemmed from deposit concentration in the digital assets industry (approximately 23.5% of total deposits), creating reputational contagion from the crypto downturn and making depositors particularly sensitive to banking sector instability.

First Republic Bank ($229 billion in assets) was seized on May 1, 2023. Despite receiving a $30 billion emergency deposit injection from 11 major banks in March, First Republic lost $72 billion in deposits during Q1 2023. Its client base of high-net-worth individuals held predominantly uninsured balances, and the bank's fixed-rate mortgage and loan portfolios had accumulated significant unrealized losses as rates rose.

Systemic Risk Exception

The systemic risk exception is a provision under the Federal Deposit Insurance Act that allows the FDIC, with approval from the Treasury Secretary and the Federal Reserve Board of Governors, to protect all deposits (including those exceeding the $250,000 insurance limit) when failure to do so would have "serious adverse effects on economic conditions or financial stability." On March 12, 2023, regulators invoked this exception for SVB and Signature Bank, protecting combined uninsured deposits of approximately $231 billion. The determination was based on analysis showing that least-cost resolution (which would have imposed losses on uninsured depositors) would trigger widespread deposit outflows across the banking system, intensify liquidity pressures, and constrain credit availability. This was only the second time the exception had been invoked, following its use during the 2008 financial crisis.

First Citizens BancShares acquired SVB's operations on March 27, 2023, assuming $56 billion in deposits and acquiring $72 billion in loans at a $16.5 billion discount to book value, with FDIC loss-sharing protection and equity appreciation rights worth up to $500 million. The FDIC estimated its cost at $16.1 billion. Flagstar Bank (a subsidiary of New York Community Bancorp) assumed most of Signature Bank's deposits and assets, with the FDIC absorbing approximately $2.4 billion in losses. JPMorgan Chase acquired First Republic, assuming $92 billion in deposits and $173 billion in loans, with the deal expected to generate over $500 million in incremental annual net income. The FDIC's estimated cost was $13 billion.

The FDIC recovered a portion of these costs through a special assessment of 13.4 basis points annually on 114 banking organizations (exempting banks under $5 billion in assets), collecting approximately $16.7 billion over eight quarterly periods beginning Q1 2024. Banks with assets over $50 billion bore more than 95% of the assessment.

The 2018 Economic Growth, Regulatory Relief, and Consumer Protection Act (EGRRCPA) raised the "too big to fail" asset threshold from $50 billion to $250 billion, exempting banks like SVB, Signature, and First Republic from enhanced prudential standards including annual stress testing, enhanced liquidity requirements, and more stringent capital rules. The Congressional Budget Office had noted before passage that raising the threshold would "increase the likelihood that a large financial firm with assets of between $100 billion and $250 billion would fail."

The Fed launched the Bank Term Funding Program (BTFP) in March 2023, providing loans to depository institutions for up to one year using Treasuries, agency debt, and agency MBS valued at par (critically, with no haircuts, allowing banks to borrow the full face value of securities trading well below par). The program peaked at over $165 billion in outstanding loans before ceasing new extensions on March 11, 2024.

The crisis prompted sweeping regulatory proposals. The OCC, Federal Reserve, and FDIC proposed requiring banks with $100 billion or more in assets to include unrealized gains and losses on AFS securities in regulatory capital through AOCI, closing the loophole that allowed SVB to exclude billions in paper losses from its capital ratios. Additional proposals included enhanced liquidity requirements and long-term debt issuance mandates for large regional banks, designed to provide a buffer before depositors take losses in a future failure.