businessbriefs
9:56in productionCh. 1 · Who shut it down/ 9:56 · ceiling 15 min
Finance

Signature Bank

2001

A bank that grew fast, governed informally, and hid inconsistent data from regulators — until $10 billion fled in two days.

Signature Bank collapsed because it scaled deposits faster than its risk controls, ignored a 2019 liquidity downgrade, and withheld consistent data from regulators — then lost $10 billion in two days when confidence broke.

FinanceBankingThe financial crisisRiskBanking across the network →
Chapters & takeaways5
  1. 1:04
    Who shut it down

    New York state banking officials closed Signature Bank on March 12, 2023 — not the FDIC, not federal authorities.

  2. 2:38
    The run, not the rot

    More than $10 billion in deposits vanished in under 48 hours — driven by contagion, not internal fraud or loan losses.

  3. 3:37
    The numbers were known

    89.3% of deposits were uninsured — and regulators had downgraded its liquidity score in 2019 for exactly this mismatch.

  4. 4:47
    Growth without guardrails

    Its board pursued rapid, unrestrained growth without building risk management practices appropriate for its size or complexity.

  5. 6:21
    Data that moved

    During the crisis, Signature was dilatory in providing data — and what it did provide kept changing in material ways.

Worth your time?

Yes. Study the whole thing.

4.5/ 5
What works
  • exposes governance decay under growth pressure
  • shows how contagion amplifies structural weakness
  • demonstrates consequences of delayed, inconsistent regulatory reporting
What does not
  • This was not a technology failure. It was not a fraud case. It was not a product-market misfit.
Study it if
  • bankers
  • regulators
  • board members
Skip it if
  • founders building MVPs
  • consumers choosing banks
  • investors in fintech apps
The written brief1 min read

What the company or idea is

Signature Bank was a New York–based commercial bank founded in 2001, closed by state banking officials on March 12, 2023.

How it actually makes money

Signature Bank earned revenue primarily from net interest income — the spread between what it paid on deposits and what it charged on loans — with a heavy concentration in commercial real estate and private client banking.

What works

Its private client model attracted high-net-worth depositors and corporate clients, particularly in real estate and professional services — but this success deepened its vulnerability to confidence shocks.

What does not

Its risk control framework did not scale with growth. Its liquidity score was downgraded in 2019. It failed to produce consistent, timely data to regulators during the crisis.

What to take from it

Growth without embedded controls is not scalable — especially when 89.3% of deposits are uninsured and regulators have already flagged liquidity weaknesses.

Is it worth your time

Yes. Its collapse exposes how regulatory tolerance for informal governance and delayed data disclosure can accelerate failure when uninsured deposit concentration meets contagion.

Same desk · Finance4 of 53
11:36
Australian Securities Exchange1987ASX is Australia’s legislated national exchange — a for-profit public company that runs the market, clears every trade, and sets governance standards for listed firms. Its A$3.2 trillion market cap reflects dominance, not innovation. Its merger with Sydney Futures Exchange in 2006 cemented control over both equities and derivatives. But its dual role as market operator and regulator creates unavoidable conflicts — especially since it earns fees from the very activity it polices.
11:00
Bolsas y Mercados Españoles2002Bolsas y Mercados Españoles (BME) is Spain’s operator of stock exchanges and financial market infrastructure. It owns Madrid, Barcelona, Valencia, and Bilbao exchanges; Latibex; Openfinance; BME Clearing; and Iberclear — formed in 2003 by merging CADE and SCLV. It listed on 14 July 2006, was an IBEX 35 constituent from July 2007 to December 2015, had a €2.1bn market capitalisation in 2019, and was acquired by SIX Group in 2020.
9:39
FTSE Group1995FTSE Group is a British index provider founded in 1995 by Pearson and the London Stock Exchange Group. It makes money from subscriptions and licensing — not trading or data collection. Its growth came from scaling distribution (250,000 indices across 80 countries), standardising classification (e.g., Industry Classification Benchmark in 2005), and consolidating ownership (LSE bought out Pearson in 2011). It does not run markets, verify constituents, or enforce rules. Its business model depends entirely on others adopting its benchmarks — and paying to use them.
11:23
Greensill CapitalGreensill Capital collapsed because it treated speculative future sales as if they were cash — then leveraged them through opaque fund structures. Its $5 billion exposure to GFG Alliance and reliance on Credit Suisse–managed funds to buy unsecured notes created a system with no real collateral, no insurance, and no fallback. It filed for insolvency on 8 March 2021 after failing to repay a $140 million loan.
Up next in Business

Sports Authority

1987 · 9:36

A retailer that confused size with strength, then liquidated because its debt came due before its reinvention could begin.

Play nextBack to Finance
9:36