☕ Saturday morning deep dive:
"Why most backtests lie to you."
Thread 🧵👇
1/ Your backtest shows 75% win rate. You go live. It drops to 52%.
What happened?
Regime blindness.
Your strategy crushed in STABLE markets (70% of backtest period). But when FRAGILE hit (the other 30%), it bled.
You tested ONE regime. The market gives you FOUR.
2/ Here's the fix:
Split your backtest by regime:
- STABLE: 75% win rate ✅
- FRAGILE_DIV: 48% win rate ❌
- FRAGILE_ACCEL: 32% win rate 🔴
- FRAGILE_BOTH: 41% win rate 🔴
Now you know: Don't trade FRAGILE. Period.
Suddenly, your live results match backtest.
3/ This is why PCS (Pyramidal Coherence System) classifies regime FIRST, then decides to trade.
We don't predict markets. We identify structure, then act accordingly.
Regime-aware > regime-blind.
Every. Single. Time.
Want to learn regime classification? I'll explain it next weekend. Drop a 🔥 if interested.