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.

Gap UpsGap Downs
Total Analyzed
233
74 pending
Pump & Dump
73
31% of total
Genuine Rerating
123
53% of total
Uncertain
37
16% of total

Forward Returns by Classification

Empirical proof the classifier works — avoid the 🚫 P&D-flagged names. Averages hidden until enough completed trackers exist. (min 5).

Classification5d Return20d Return5d Win RateTracked (n)
🚫 Pump & Dump-9.5%—8%73
✅ Genuine Rerating+10.5%—88%123
⚠️ Uncertain+3.8%—38%37
All233Pump & Dump73Uncertain37Genuine Rerating123
AVEX🚫 Pump & Dump
AEVEX Corp.
Conf 95% · Gap +6.4% · Aug 14, 2026
HLIT🚫 Pump & Dump
Harmonic Inc.
Conf 95% · Gap +20.7% · Aug 13, 2026
BIRK🚫 Pump & Dump
Birkenstock Holding plc
Conf 95% · Gap +17.2% · Aug 13, 2026
CRWV🚫 Pump & Dump
CoreWeave, Inc.
Conf 95% · Gap +23.3% · Aug 12, 2026
REKR🚫 Pump & Dump
Rekor Systems, Inc.
Conf 95% · Gap +6.1% · Aug 12, 2026
VELO🚫 Pump & Dump
Velo3D, Inc.
Conf 95% · Gap +24.9% · Aug 12, 2026
RIOT🚫 Pump & Dump
Riot Platforms, Inc.
Conf 95% · Gap +21.5% · Aug 11, 2026
SE🚫 Pump & Dump
Sea Limited
Conf 95% · Gap +11.4% · Aug 11, 2026
SPT🚫 Pump & Dump
Sprout Social, Inc.
Conf 95% · Gap +16.6% · Aug 7, 2026
CART🚫 Pump & Dump
Maplebear Inc.
Conf 95% · Gap +11.0% · Aug 7, 2026
UCTT🚫 Pump & Dump
Ultra Clean Holdings, Inc.
Conf 95% · Gap +7.0% · Aug 3, 2026
MMYT🚫 Pump & Dump
MakeMyTrip Limited
Conf 95% · Gap +10.2% · Aug 3, 2026
FCUV🚫 Pump & Dump
Focus Universal Inc.
Conf 95% · Gap +443.6% · Jul 31, 2026
CORT🚫 Pump & Dump
Corcept Therapeutics Incorporated
Conf 95% · Gap +20.5% · Jul 30, 2026
AVTR🚫 Pump & Dump
Avantor, Inc.
Conf 95% · Gap +23.2% · Jul 29, 2026
OPCH🚫 Pump & Dump
Option Care Health, Inc.
Conf 95% · Gap +6.5% · Jul 29, 2026
IQV🚫 Pump & Dump
IQVIA Holdings Inc.
Conf 95% · Gap +10.2% · Jul 28, 2026
UL🚫 Pump & Dump
Unilever PLC
Conf 95% · Gap +8.6% · Jul 28, 2026
REXR🚫 Pump & Dump
Rexford Industrial Realty, Inc.
Conf 95% · Gap +7.5% · Jul 27, 2026
SW🚫 Pump & Dump
Smurfit Westrock Plc
Conf 95% · Gap +12.9% · Jul 27, 2026
BAH🚫 Pump & Dump
Booz Allen Hamilton Holding Corporation
Conf 95% · Gap +6.3% · Jul 24, 2026
DBGI🚫 Pump & Dump
Digital Brands Group, Inc.
Conf 95% · Gap +3985.1% · Jul 23, 2026
SMCI🚫 Pump & Dump
Super Micro Computer, Inc.
Conf 95% · Gap +13.3% · Jul 22, 2026
AIRJ🚫 Pump & Dump
AirJoule Technologies Corporation
Conf 95% · Gap +16.7% · Jul 22, 2026
JBHT🚫 Pump & Dump
J.B. Hunt Transport Services, Inc.
Conf 95% · Gap +7.1% · Jul 16, 2026
MWH🚫 Pump & Dump
SOLV Energy, Inc.
Conf 95% · Gap +5.1% · Jul 15, 2026
TSEM🚫 Pump & Dump
Tower Semiconductor Ltd.
Conf 95% · Gap +18.2% · Jul 14, 2026
NNE🚫 Pump & Dump
NANO Nuclear Energy Inc.
Conf 91% · Gap +6.5% · Aug 12, 2026
MTZ🚫 Pump & Dump
MasTec, Inc.
Conf 91% · Gap +12.7% · Jul 30, 2026
JACK🚫 Pump & Dump
Jack in the Box Inc.
Conf 90% · Gap +17.0% · Aug 13, 2026
OII🚫 Pump & Dump
Oceaneering International, Inc.
Conf 90% · Gap +7.5% · Jul 27, 2026
CBRS🚫 Pump & Dump
Cerebras Systems Inc.
Conf 87% · Gap +8.2% · Aug 12, 2026
COHR🚫 Pump & Dump
Coherent Corp.
Conf 87% · Gap +9.0% · Aug 12, 2026
SPIR🚫 Pump & Dump
Spire Global, Inc.
Conf 87% · Gap +6.6% · Aug 12, 2026
PRCH🚫 Pump & Dump
Porch Group, Inc.
Conf 86% · Gap +23.8% · Jul 30, 2026
GEHC🚫 Pump & Dump
GE HealthCare Technologies Inc.
Conf 86% · Gap +12.7% · Jul 29, 2026
NU🚫 Pump & Dump
Nu Holdings Ltd.
Conf 83% · Gap +13.0% · Aug 14, 2026
REKR🚫 Pump & Dump
Rekor Systems, Inc.
Conf 83% · Gap +5.9% · Aug 13, 2026
MWH🚫 Pump & Dump
SOLV Energy, Inc.
Conf 83% · Gap +5.6% · Aug 13, 2026
XE🚫 Pump & Dump
X-Energy, Inc.
Conf 83% · Gap +13.7% · Aug 13, 2026
ARCO🚫 Pump & Dump
Arcos Dorados Holdings Inc.
Conf 83% · Gap +7.0% · Aug 13, 2026
QNT🚫 Pump & Dump
Quantinuum Inc.
Conf 83% · Gap +6.2% · Aug 12, 2026
FA🚫 Pump & Dump
First Advantage Corporation
Conf 83% · Gap +7.8% · Aug 7, 2026
COUR🚫 Pump & Dump
Coursera, Inc.
Conf 83% · Gap +6.6% · Jul 29, 2026
BRBR🚫 Pump & Dump
BellRing Brands, Inc.
Conf 83% · Gap +6.2% · Jul 28, 2026
UNP🚫 Pump & Dump
Union Pacific Corporation
Conf 83% · Gap +5.9% · Jul 23, 2026
WU🚫 Pump & Dump
The Western Union Company
Conf 81% · Gap +6.1% · Jul 31, 2026
RYAN🚫 Pump & Dump
Ryan Specialty Holdings, Inc.
Conf 80% · Gap +6.6% · Jul 31, 2026
ST🚫 Pump & Dump
Sensata Technologies Holding plc
Conf 80% · Gap +7.2% · Jul 30, 2026
WFRD🚫 Pump & Dump
Weatherford International plc
Conf 80% · Gap +5.2% · Jul 22, 2026
ACHR🚫 Pump & Dump
Archer Aviation Inc.
Conf 79% · Gap +14.7% · Aug 10, 2026
YUM🚫 Pump & Dump
Yum! Brands, Inc.
Conf 78% · Gap +6.6% · Jul 30, 2026
TMUS🚫 Pump & Dump
T-Mobile US, Inc.
Conf 78% · Gap +6.2% · Jul 27, 2026
CAPR🚫 Pump & Dump
Capricor Therapeutics, Inc.
Conf 76% · Gap +82.4% · Aug 14, 2026
HRB🚫 Pump & Dump
H&R Block, Inc.
Conf 76% · Gap +16.8% · Aug 12, 2026
EMBJ🚫 Pump & Dump
Embraer S.A.
Conf 76% · Gap +8.0% · Aug 10, 2026
DOCU🚫 Pump & Dump
DocuSign, Inc.
Conf 76% · Gap +6.0% · Jul 29, 2026
SMCI🚫 Pump & Dump
Super Micro Computer, Inc.
Conf 76% · Gap +13.0% · May 6, 2026
LWLG🚫 Pump & Dump
Lightwave Logic, Inc.
Conf 75% · Gap +6.5% · Aug 12, 2026
WYFI🚫 Pump & Dump
WhiteFiber, Inc.
Conf 75% · Gap +16.0% · Aug 12, 2026
COHU🚫 Pump & Dump
Cohu, Inc.
Conf 75% · Gap +24.2% · Jul 31, 2026
WDAY🚫 Pump & Dump
Workday, Inc.
Conf 75% · Gap +8.4% · Jul 29, 2026
DLR🚫 Pump & Dump
Digital Realty Trust, Inc.
Conf 75% · Gap +5.9% · Jul 24, 2026
ALAB🚫 Pump & Dump
Astera Labs, Inc.
Conf 70% · Gap +8.3% · Jul 14, 2026
YXT🚫 Pump & Dump
YXT.COM Group Holding Limited
Conf 69% · Gap +16.3% · Aug 13, 2026
RGTI🚫 Pump & Dump
Rigetti Computing, Inc.
Conf 69% · Gap +5.2% · Aug 12, 2026
FRVO🚫 Pump & Dump
Fervo Energy Company
Conf 69% · Gap +6.6% · Aug 12, 2026
LCID🚫 Pump & Dump
Lucid Group, Inc.
Conf 69% · Gap +18.8% · Jul 29, 2026
SMTC🚫 Pump & Dump
Semtech Corporation
Conf 68% · Gap +9.8% · Jul 14, 2026
TAL🚫 Pump & Dump
TAL Education Group
Conf 66% · Gap +14.5% · Jul 31, 2026
KO🚫 Pump & Dump
The Coca-Cola Company
Conf 66% · Gap +5.4% · Jul 29, 2026
SLB🚫 Pump & Dump
SLB N.V.
Conf 66% · Gap +6.0% · Jul 24, 2026
ARWR🚫 Pump & Dump
Arrowhead Pharmaceuticals, Inc.
Conf 66% · Gap +14.7% · Jul 22, 2026

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.
Post-Gap Validation — Gap-Up & Gap-Down Follow-Through | GapTracker