1. Historical Context
In the early 2000s, low interest rates from the Federal Reserve and financial deregulation incentivized Wall Street banks to make subprime mortgages to people with unverified income, assets, or employment (known as NINJA loans).
2. The Breakdown Event
To mitigate risk, banks packaged these low-quality mortgages into complex derivatives called CDOs (Collateralized Debt Obligations) and paid credit rating agencies to give them the highest security rating (AAA). When US housing prices stopped rising in 2006 and subprime borrowers began to default en masse, the value of CDOs fell to zero. Global banks that held these derivatives on their balance sheets could no longer determine who was solvent. In September 2008, the investment bank Lehman Brothers declared bankruptcy after failing to obtain a public bailout, which completely frozen global credit.
3. Global Economic Impact
The interbank liquidity crisis forced multimillion-dollar government bailouts of global banks and the adoption of extreme quantitative easing policies by central banks, unleashing a deep global recession.
Key Financial Lesson (Psychology of Money)
Extreme financial complexity often masks catastrophic systemic risks. Trying to diversify risk by lumping rotten assets into a single package does not make the mix safe, it only masks the danger under complex mathematical formulas.
4. Practical Case or Real Life Example
The 2007-2008 U.S. housing market crash led to the demise of historic Wall Street brands such as Lehman Brothers, Bear Stearns and Merrill Lynch in a matter of months.