Episode Details

On Thursday, March 9, 2023, Silicon Valley Bank was solvent. Its capital ratios were above regulatory minimums. Its loan book was not impaired. By Friday afternoon, forty-two billion dollars had left. The FDIC seized it before Monday. What happened in those thirty-six hours was not a discovery of hidden losses. The risk was in the annual report — disclosed, audited, filed. The investors who moved first on Thursday morning read the same document that every depositor, analyst, and regulator had access to for months. The run was not caused by a secret. It was caused by a spreadsheet anyone could build — and by the speed at which the people who built it could tell everyone else. This is the financial autopsy of Silicon Valley Bank — and the HTM duration mismatch that turned a rate cycle into an insolvency event, and the social media bank run that answered a question nobody had fully modeled: how fast does a bank fail when its depositors are all online, all connected, and all reading the same group chat at the same time

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We trace the full mechanism: how SVB's deposit base tripled in two years from $60B to $191B, why the excess was deployed into $80B of long-duration Treasuries and agency MBS, and how a $15 billion unrealized HTM loss — larger than SVB's entire tangible equity — sat invisible inside the regulatory capital calculation until the deposit base moved. We document how Founders Fund's Thursday morning message traveled through VC WhatsApp groups and Twitter, and how forty-two billion in withdrawal requests arrived before end of day. We dissect three signals available before March 8th: the HTM unrealized loss relative to tangible equity from page sixty-three of the annual report, the 94% uninsured deposit concentration, and the net interest margin compression trajectory from Q3 2022 filings. We cover the FDIC seizure, the emergency deposit guarantee, and the systemic contagion to Signature Bank and First Republic. If you hold deposits above the FDIC limit, manage bank counterparty risk, or analyze regional bank equity, this is the episode that explains what the HTM classification defers — and what it cannot defer when the depositors coordinate

Financial Forensics Labs — Every collapse has a pattern. We dissect it. Layer by layer.

 KEYWORDS Silicon Valley Bank collapse 2023, SVB bank run, SVB FDIC seizure, HTM duration mismatch, held-to-maturity unrealized loss, SVB social media bank run, SVB depositor run, uninsured deposits bank risk, SVB unrealized bond losses, bank run 2023, venture capital bank SVB, SVB annual report red flags, regional bank failure 2023, SVB Founders Fund, interest rate risk bank balance sheet