📘 Case Studies: Billion-Dollar Market Losses
Cause of Collapse
Key Learnings
Long-Term Capital Management (LTCM)
1998
~$4.6B
Excessive leverage (25–30x), reliance on models assuming normal markets, liquidity
crunch during Russia default
Limit leverage, stress-test for extreme events, don’t rely solely on models
Amaranth Advisors
2006
~$6B
Concentrated bets on natural gas futures that moved against them
Avoid concentration risk, size positions to survive volatility
Barings Bank (Nick Leeson)
1995
~$1.4B (bankruptcy)
Rogue trader hiding losses, massive leveraged bets on Nikkei futures
Strong risk controls, independent oversight, no unchecked traders
Archegos Capital (Bill Hwang)
2021
~$20B (banks lost ~$10B)
Extreme leverage through swaps, concentrated bets on a few media/tech stocks
Transparency with counterparties, monitor synthetic leverage, diversification
Société Générale (Jérôme Kerviel)
2008
~$7.2B
Unauthorized trading, hidden positions in index futures
Importance of internal controls, detect unusual trade patterns
MF Global (Jon Corzine)
2011
~$1.6B
Overexposure to European sovereign bonds with repo leverage
Liquidity buffers, avoid excessive exposure to risky sovereign debt
Bear Stearns Hedge Funds
2007
~$1.6B
Heavy exposure to subprime mortgage CDOs, illiquidity during credit crunch
Don’t overinvest in opaque structured products, beware liquidity freezes
Orange County, CA
1994
~$1.7B
Use of leveraged derivatives bets by treasurer Robert Citron
Don’t speculate with borrowed public funds, match investments to liabilities
Knight Capital
2012
~$440M (bankruptcy in 30 min)
Software glitch unleashed erroneous trades
Technology risk controls, circuit breakers, test systems before release
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- FrankRebecca·2025-08-26It's vital to learn from these monumental losses.LikeReport
