Titans Of Tomorrow The Man Who Cracked The Market Algorithm - Samir Varma PhD
17 snips
Nov 30, 2025 
Samir Varma, a particle physicist turned systematic futures trader with 30+ years of experience, shares his scientific approach to markets. He explores why prediction fails and reacting to signals wins. He discusses stop-hunt mechanics, risk-model failures, drawdown pitfalls, practical order tactics, and how to build robust, stress-tested trading systems.
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The Worst Trade Was Letting Greed Turn A Win Into Loss
- Samir's worst trade was holding Siebel Systems from around $5 to ~$120 then selling at $5.50 during the dot-com crash due to greed and inability to sell at the top.
- He identifies it as worst because of opportunity cost and multiple psychological errors: not selling, regret, and then panic-selling at the bottom.
Classify Risk Regimes Instead Of Forecasting Volatility
- Common risk models (GARCH variants) work until crises when they fail slowly and catastrophically; better to classify risk regimes than predict exact volatility.
- Samir argues it's preferable to be approximately right about high/low risk regimes than exactly wrong on point forecasts.
Don't Fire Traders On Mechanical Drawdown Cutoffs
- Avoid blunt drawdown cutoffs for traders; investigate why a drawdown occurred before firing the trader because a rigid cutoff often turns eventual winners into losers.
- Samir's paper shows forced cutoffs on perfectly profitable pairs would have turned profits into losses in hindsight.
