diff --git a/.github/copilot-instructions.md b/.github/copilot-instructions.md
index face661..8529fc8 100644
--- a/.github/copilot-instructions.md
+++ b/.github/copilot-instructions.md
@@ -104,6 +104,15 @@
 - **Helper function:** `getMinQualityScoreForDirection(direction, config)` in config/trading.ts
 - **Implementation:** check-risk endpoint uses direction-specific thresholds before execution
 - **Expected impact:** ~3.1% more trades (quality 90-94 longs), +$44.77 potential profit, prevent -$553.76 losses
+- **VALIDATION (Nov 24, 2025 - BIGGEST LOSERS ANALYSIS):**
+  - **Top 15 losing trades analyzed:** Quality 80-90 trades dominate the loss list
+  - **Top 2 biggest losses:** Quality 90 SHORTS lost -$386.62 and -$138.35 (total -$524.97)
+  - **Quality 80 losses:** 4 trades lost combined -$212.76 (SHORTS: -$143.96, LONG: -$68.80)
+  - **Total losses prevented by current thresholds:** -$847.07 would be blocked today
+  - **Missed winners (Nov 24):** ~$210 from 2 blocked quality 80 SHORT signals
+  - **NET BENEFIT:** +$637 improvement (3:1 ratio - avoid $3 in losses for every $1 missed)
+  - **User capital validation:** Peak $1,380 → bad shorts → $904, proving 95+ SHORT threshold necessary
+  - **Trade-off confirmed:** Sacrifice 1-2 winners/week to eliminate catastrophic quality 80-90 disaster trades
 - **See:** `docs/DIRECTION_SPECIFIC_QUALITY_THRESHOLDS.md` for complete analysis and SQL queries
 
 **Adaptive Leverage System (Nov 24, 2025 - RISK-ADJUSTED POSITION SIZING):**