Finance

The Big Short

by Michael Lewis

Who saw 2008 coming, and how?

In the mid-2000s a handful of oddballs started betting that American home loans would go bad. Wall Street happily took the other side. Michael Lewis tells the crash through the few who saw it early, and asks why almost nobody would listen to them.

Hear a sample · read by Laura

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What you'll learn

  • Loans built to fail
  • Turning BBB into AAA
  • The raters were gamed
  • The end of the partnerships

The key ideas in The Big Short

Loans built to fail

Lenders handed mortgages to people who couldn't afford them, often with a low teaser rate for two years and a jump after that. The loans only worked if house prices kept rising so borrowers could refinance. The lenders sold them on, so they barely cared.

Turning BBB into AAA

Banks took the riskiest slices of mortgage bonds, the ones rated BBB, and bundled them into a new security called a CDO. The ratings agencies then stamped most of it AAA, as if piling risky loans together had made them safe.

The raters were gamed

The agencies' models looked at borrowers' average credit score. So the banks mixed very low scores with high ones, and the average passed. Lewis shows Wall Street learning exactly what the models checked and feeding them what they wanted.

The end of the partnerships

Lewis traces the rot back to the day Wall Street firms stopped being partnerships. Once Salomon Brothers went public in 1981, traders were risking shareholders' money instead of their own, and the partners' old caution went with it.

Lines worth underlining

  1. Bad loans

    Banks lent huge sums to people who clearly could never pay the money back.

  2. AAA

    Wall Street piled those shaky loans into bonds, and the rating agencies still stamped them AAA.

  3. Outsiders

    The few who saw the crash coming were misfits who actually read the loan details.

  4. The bet

    A few investors bought insurance against the mortgage bonds failing, called credit default swaps, and paid for it while they waited.

  5. Too early

    For months the losses piled up, and being right too early felt just like being wrong.

A story from the book

Burry reads the small print

Michael Burry was a doctor who taught himself investing and ran a small fund in California. He read the prospectuses of mortgage bonds that almost nobody read, saw how bad the loans were, and talked banks into selling him credit default swaps, insurance that paid out if the bonds failed.

Hot take · true or myth?

The people who bet on the crash felt triumphant when it came.

See the book's answer

Myth. Lewis describes them as uneasy, even sick about it. Being right meant the system really was as rotten as they'd feared, and ordinary homeowners were paying for it.

One thing to try

Read one document in full

Pick one thing you've signed and never read properly, such as a mortgage offer or a pension statement. Read it through this week and write down one thing that surprised you. Burry's edge was reading what everyone else skipped.

There's more to The Big Short

Knotd has the key ideas from 250+ non-fiction books, each in a few minutes, in plain words. The Big Short comes with a Hot Take round and a Spot the Trap case to make it stick.

Get the whole book on KnotdOpen in the app

Questions about The Big Short

What is The Big Short about?

Who saw 2008 coming, and how? In the mid-2000s a handful of oddballs started betting that American home loans would go bad. Wall Street happily took the other side. Michael Lewis tells the crash through the few who saw it early, and asks why almost nobody would listen to them.

What are the key ideas in The Big Short?

Loans built to fail; Turning BBB into AAA; The raters were gamed; The end of the partnerships.

What's one thing to try from The Big Short?

Pick one thing you've signed and never read properly, such as a mortgage offer or a pension statement. Read it through this week and write down one thing that surprised you. Burry's edge was reading what everyone else skipped.

Is The Big Short on Knotd?

Yes. Knotd has the key ideas from The Big Short in a few minutes, in plain words, plus a Hot Take round and a Spot the Trap case to test them. It's one of 250+ non-fiction books in the app.