LTCM: When Genius Failed

Long-Term Capital Management: A Cautionary Tale

LTCM was a hedge fund founded in 1994 by John Meriwether, with a dream team including Nobel Prize winners Myron Scholes and Robert Merton. It nearly brought down the global financial system in 1998.

The Setup

• Founded: 1994 with $1.3 billion in capital
• Strategy: Convergence arbitrage — betting that similar bonds would converge in price
• Leverage: Up to 25:1 on balance sheet, much higher in derivatives
• Returns: 21%, 43%, 41% in first three years

What Went Wrong

1. Russian Debt Crisis (August 1998)

Russia defaulted on its government bonds, triggering a global "flight to quality." Investors fled risky assets for U.S. Treasuries, causing spreads to widen instead of converge.

2. Extreme Leverage

LTCM had $4.7 billion in equity supporting $125 billion in assets and over $1 trillion in derivatives exposure. When positions moved against them, losses were amplified.

3. Crowded Trades

Other funds had copied LTCM's strategies. When LTCM started losing, these funds also sold, creating a vicious spiral.

4. Model Limitations

Their models assumed normal distributions and historical correlations. The Russian crisis was a "6-sigma event" that shouldn't have happened according to their models.

The Bailout

In September 1998, the Federal Reserve Bank of New York organized a $3.6 billion bailout by 14 major banks to prevent systemic collapse.

Lessons for Algo Traders

1. Leverage kills — even great strategies fail with too much leverage
2. Tail risk is real — "impossible" events happen more often than models predict
3. Correlation is not constant — in crisis, everything correlates to 1
4. Crowded trades are dangerous — if everyone has the same position, who buys when you sell?
5. Diversification fails when you need it most — during crises, all "uncorrelated" bets can move together
6. Size your positions for survival, not just expected returns

"Markets can stay irrational longer than you can stay solvent." — John Maynard Keynes

This content is for educational purposes only and does not constitute investment advice.