Post-Gap Validation
A validation & avoid-list tool: tracks whether post-earnings gaps hold over 5-day price action. For gap-ups it distinguishes pump-and-dumps from genuine reratings; for gap-downs it separates reversals (dip-buys) from continued selloffs (avoids) — so you know which names to stay away from.
Total Analyzed
33
11 pending
Selloff (AVOID)
20
61% of total
Reversal (DIP-BUY)
10
30% of total
Uncertain
3
9% of total
Forward Returns by Classification
Empirical proof the classifier works — for gap-downs, a negative 5d return confirms the AVOID read held. Averages hidden until enough completed trackers exist. (min 5).
| Classification | 5d Return | 20d Return | 5d Win Rate | Tracked (n) |
|---|---|---|---|---|
| ✅ Reversal (DIP-BUY) | +5.3% | — | 80% | 10 |
| 🚫 Selloff (AVOID) | -8.1% | — | 5% | 20 |
| ⚠️ Uncertain | — | — | — | 3 |
How It Works
Gap Ups
🚫 Pump & Dump
- • Gap fills >70% within 5 days
- • Volume decays >60% (no follow-through)
- • Lower highs pattern (distribution)
- • Max drawdown >8% from gap close
✅ Genuine Rerating
- • Gap holds (<20% fill)
- • Volume sustained (<30% decay)
- • Higher highs, peak close day 4-5
- • Strong EPS beat or guidance raise
Gap Downs
✅ Reversal (DIP-BUY)
- • Recovered >70% of the down-gap
- • Selling volume decayed (panic exhausted)
- • Higher lows held above the capitulation low
- • Minimal further downside (<2%)
🚫 Selloff (AVOID)
- • Recovery <20% — stayed down
- • Sustained volume (continued distribution)
- • Peak close day 1, lower lows after
- • EPS miss or lowered guidance supporting the de-rating
Signal weights (both directions): Follow-Through 25% · Volume 20% · Price Trajectory 20% · Drawdown 15% · Fundamentals 20%
Classification requires ≥3 days of data; full confidence requires all 5 trading days. ≥60% directional score = decisive classification, otherwise Uncertain.
Classification requires ≥3 days of data; full confidence requires all 5 trading days. ≥60% directional score = decisive classification, otherwise Uncertain.