Scion Capital was the legendary hedge fund managed by Dr. Michael Burry. Though it operated for only a few years (2000-2008), its story has become a cornerstone of modern investment lore. Burry, a former neurologist with a knack for deep-dive financial analysis, founded Scion with an inheritance and family loans. He quickly built a reputation for unconventional but highly profitable investments, guided by the principles of value investing. However, Scion Capital is immortalized for one spectacular trade: its massive bet against the U.S. subprime mortgage market in the mid-2000s. This audacious move, chronicled in the book and film The Big Short, netted the fund and its investors hundreds of millions in profit while the global financial system teetered on the brink of collapse. The fund was ultimately closed in 2008, with Burry returning capital to his investors to focus on his personal investments.
Scion's fame rests almost entirely on its monumental bet against the U.S. housing market, a move so bold and prescient it’s often called one of the greatest trades in history.
While the world celebrated a seemingly endless housing boom, Michael Burry was doing something few others were: reading the fine print. He painstakingly analyzed the prospectuses of thousands of individual mortgages bundled into complex bonds called collateralized debt obligations (CDOs). He discovered that these bonds, often rated as safe as government debt, were packed with incredibly risky “subprime” loans. These loans featured low “teaser” interest rates that would reset much higher after a few years, a ticking time bomb for homeowners with poor credit. Burry realized that when these rates reset, millions would default, causing the value of these supposedly “safe” CDOs to plummet.
How do you bet against an entire housing market? You can't just short-sell millions of houses. Burry found his answer in an obscure financial instrument: the credit default swap (CDS). A CDS is essentially an insurance policy. The buyer pays regular premiums, and the seller agrees to pay out if a specific asset (in this case, the CDO bonds) defaults or “fails.” Burry approached several major investment banks and persuaded them to sell him CDS contracts on the specific subprime-filled CDO tranches he believed were most likely to fail. In essence, he was buying fire insurance on a house he was convinced was about to burn down. The banks, believing the housing market was invincible, were more than happy to collect what they saw as free money from his insurance premiums.
Burry's thesis was correct, but his timing was early. For nearly two years, the housing market continued to climb, and Scion Capital had to pay millions of dollars in monthly CDS premiums. The fund's value dropped, his investors panicked and demanded their money back, and he faced constant pressure and potential margin calls from the banks. It took immense psychological fortitude to hold the position. But then, in 2007, the first cracks appeared. Homeowners began defaulting as their mortgage rates reset. The dominoes started to fall, and the value of the CDOs cratered. Scion's CDS contracts, which had been a massive drain, suddenly became spectacularly valuable. By the time Burry closed the positions, Scion Capital had realized a profit of over $700 million for its investors and $100 million for himself personally—a return of over 489% in just a few years.
At its core, Scion's strategy was an extreme form of value and contrarian investing. While traditional value investors look for undervalued companies, Burry looked for deep, systemic mispricings in opaque corners of the market that everyone else either misunderstood or ignored. His approach was a masterclass in betting against the herd. He didn't just disagree with the consensus; he built an incredibly detailed, data-driven case for why the consensus was disastrously wrong. This required not only brilliant analysis but also the stomach to be branded a fool while waiting for reality to catch up with his research.
The epic tale of Scion Capital offers timeless wisdom for any investor: