What Happened
The Global Financial Crisis began in the US subprime mortgage market and became the worst financial crisis since 1929. Banks had packaged millions of subprime mortgages into complex securities (CDOs) and sold them globally, with rating agencies stamping AAA on instruments that were effectively junk. When housing prices began declining in 2006, the entire edifice began to crack.
Bear Stearns hedge funds failed in June 2007, the first visible crack. Over the following 14 months, the crisis metastasized through the global banking system. Lehman Brothers filed for bankruptcy on September 15, 2008 — the largest bankruptcy in US history — triggering a global credit freeze that threatened to collapse the entire financial system within days.
The Federal Reserve, Treasury, and FDIC mounted an unprecedented response: $700B TARP, emergency credit facilities, coordinated global rate cuts, and eventually quantitative easing. The S&P 500 fell 57% from peak to trough. Unemployment hit 10%. The recovery took years.
The Mechanism
Leverage, complexity, and the rating agency failureMortgage originators had no incentive to maintain lending standards because they sold the loans immediately. Banks packaged bad loans into CDOs and got them rated AAA through structured complexity. Investors worldwide bought them believing the ratings. When default rates exceeded model assumptions, the CDOs became worthless simultaneously — and the leverage that amplified gains in the boom amplified losses catastrophically. AIG had insured $440B in CDO risk through credit default swaps it could not pay. The entire system was interconnected in ways nobody had mapped.
What the Consensus Believed
The prevailing view before the reckoning
Housing prices had never declined nationally. The models showed the CDOs were safe. The banks were well capitalized. The Fed had the tools to contain any problems. Subprime was isolated and would not spread. The financial innovation of securitization had distributed risk broadly, making the system more stable.
What the Record Shows
Incentive structures determine outcomes
When mortgage originators profit from volume not quality, lending standards collapse. When rating agencies are paid by issuers, ratings inflate. The GFC was an incentive failure as much as a risk failure.
Complexity hides risk
CDOs were so complex that buyers could not assess them independently. They relied on ratings. When the ratings were wrong, there was no second line of defense.
Leverage amplifies everything
Bear Stearns, Lehman, and Merrill Lynch operated at 30-40x leverage. A 3% decline in asset values wiped out equity entirely. Leverage is not a risk — it is a guarantee of catastrophic loss under adverse conditions.
Too big to fail is a policy choice
Letting Lehman fail proved that systemic risk was real. The subsequent bailouts of AIG, Citi, and the GSEs proved that TBTF was the actual policy. The moral hazard from this persists today in the private credit market.
↑ Cognitive pattern: Complexity Hiding — Rating agency capture
Key Voices
Called It Right
Michael Burry
Scion Capital
“I have 1.3 billion reasons to believe the housing market is going lower. The derivatives market is massively overexposed.”
November 2006 Short CDOs — Right
John Paulson
Paulson & Co
“Short every bank you can find. The leverage ratios are catastrophic and the assets are worthless.”
June 2007 Made $15B
Nouriel Roubini
NYU
“The housing bubble will burst and when it does the economic consequences will be severe and long-lasting.”
August 2005 Dr. Doom — Right
Warren Buffett
Berkshire Hathaway
“Wall Street has created a financial weapon of mass destruction. These mortgage derivatives will destroy enormous value.”
February 2003 Annual letter warning
Catastrophically Wrong
Ben Bernanke
Federal Reserve Chairman
“I do not think there will be any spillovers from the subprime market to the rest of the economy or to the financial system.”
May 2007 — Testimony Wrong
Dick Fuld
Lehman Brothers CEO
“Lehman Brothers is in fine shape. The balance sheet is strong and the franchise is intact.”
June 2008 Lehman filed Sept 2008
Hank Paulson
US Treasury Secretary
“The financial system is stable. The banks are well capitalized. There is no systemic risk.”
March 2008 Wrong
Alan Greenspan
Former Fed Chairman
“I have found a flaw in my ideology. I was wrong to assume self-interest of lending institutions would protect shareholders.”
October 2008 — Congress Public admission