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Michael Burry and The Big Short: right, early and doubted

In 2005, a doctor-turned-fund-manager started betting that millions of US home loans would go bad. For almost two years, he looked wrong. His investors were furious and tried to pull their money. Then the housing market broke.

Story · 7-minute read · Updated 2026-10-21

Who they were

Michael Burry was born in San Jose, California, in 1971. As a small child he lost his left eye to cancer and has worn a glass eye since. In The Big Short, Michael Lewis writes that it shaped how he related to other people.

He studied economics and pre-med at UCLA and earned a medical degree from Vanderbilt. He was training as a neurologist at Stanford when he started spending his nights on something else: stocks.

In the late 1990s he wrote about his stock ideas on online message boards. His posts were detailed and careful. People in the investing world noticed.

What happened

Scion Capital

In November 2000, Burry left medicine and started his own fund, Scion Capital, in California. He began with money from family and a few backers who'd read his posts.

In the fund's early years, when the dot-com bubble was bursting and the market was falling, Scion did very well by picking cheap stocks.

The housing bet

By 2005, Burry had read through the details of mortgage bonds, the pools of home loans that banks sold to investors. Many loans had been made to people who could only afford the first, low "teaser" payments. When those payments reset higher, he expected many borrowers to stop paying.

He bought a kind of insurance on those mortgage bonds, called a credit default swap. It works like this:

• He paid a regular fee, like an insurance premium.
• If the bonds kept paying, he lost those fees.
• If the bonds failed, the insurance would pay out many times what he'd paid.

The wait

The problem was timing. In 2005 and 2006, house prices kept rising. Burry kept paying premiums. On paper, his fund was losing.

His investors grew angry. Many wanted their money back. In The Big Short, Lewis describes how Burry used a rule in his fund's terms to stop investors from withdrawing money tied to the bet. That move made him deeply unpopular with them.

The payoff

In 2007, home loans began failing in large numbers. The value of Burry's insurance soared.

From its start in November 2000 to June 2008, Scion returned about 489% after fees and expenses, according to figures widely reported since. Over the same period, the S&P 500 returned just over 2%.

Burry closed Scion in 2008. Lewis's book came out in 2010, and a film followed in 2015.

Later years

Burry later opened a new firm, Scion Asset Management. In 2019 he publicly wrote to the company GameStop about its business, years before its shares became famous. In November 2025, Scion's registration with the SEC was ended, and a letter to investors reported by Reuters said he would return outside money.

The moment everyone remembers

The famous moment is the payoff. But the moment traders study is the wait.

He was right about the housing market. He was also nearly two years early. During that time, being right looked exactly like being wrong. The fees kept going out, his investors kept complaining, and the world kept saying he'd made a mistake.

His bet survived the wait partly because of how it was built. The most he could lose was the premiums he'd paid. He knew his worst case from day one.

What it teaches

1. Know your worst case before you start

Burry's bet had a clear maximum loss: the premiums. That's the same idea as a stop loss: before you enter, you know exactly what being wrong costs.

2. Size it so you can survive being early

Even a good idea can take a long time to work. If the bet is too big, you're forced out before it does. That's why we risk a small, fixed slice, about 1% per trade. The position size calculator sets the size from the stop.

3. Do the reading others skip

Burry's edge came from reading the dull details of loan pools that most people never opened. For a trader, the dull work is practice on past charts and keeping a trading journal.

4. A losing stretch isn't proof you're wrong, or right

Burry's two years of losses didn't mean he was wrong. But plenty of people have had two years of losses and were wrong. The only way to tell is to check your original reasons, not your feelings. See how to handle a losing streak.

What it doesn't mean

It doesn't mean "bet on a crash." Many people predicted housing crashes and stock crashes that never came, or came years after they ran out of money. We only hear about the ones who were right in time.

It doesn't mean contrarians are always right. Like any investor, Burry has made later public calls that didn't play out as expected.

And you can't copy this trade. The credit insurance he bought isn't available to ordinary investors, and the 2008 crisis was a rare event. What carries over is the structure: a known worst case, a size you can survive, and reasons you check, not feelings.

Timeline

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