6 iterations of backtest refinements with key discoveries:
- stop losses don't work for prediction markets (prices gap)
- 50% take profit, no stop loss yields +9.37% vs +4.04% baseline
- diversification beats concentration: 100 positions → +18.98%
- added kalman filter, VPIN, regime detection scorers (research)
exit config: take_profit 50%, stop_loss disabled, 48h max hold
position sizing: kelly 0.40, max 30% per position, 100 max positions
