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
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
HTFL✅ Genuine Rerating
Heartflow, Inc.
Conf 95% · Gap +26.0% · Aug 14, 2026
OMER✅ Genuine Rerating
Omeros Corporation
Conf 95% · Gap +23.0% · Aug 13, 2026
AVAH✅ Genuine Rerating
Aveanna Healthcare Holdings Inc.
Conf 95% · Gap +11.5% · Aug 13, 2026
NBIS✅ Genuine Rerating
Nebius Group N.V.
Conf 95% · Gap +22.8% · Aug 12, 2026
CAVA✅ Genuine Rerating
CAVA Group, Inc.
Conf 95% · Gap +14.2% · Aug 12, 2026
SLS✅ Genuine Rerating
SELLAS Life Sciences Group, Inc.
Conf 95% · Gap +7.9% · Aug 12, 2026
BW✅ Genuine Rerating
Babcock & Wilcox Enterprises, Inc.
Conf 95% · Gap +33.6% · Aug 11, 2026
BTDR✅ Genuine Rerating
Bitdeer Technologies Group
Conf 95% · Gap +6.2% · Aug 11, 2026
ARMK✅ Genuine Rerating
Aramark
Conf 95% · Gap +7.6% · Aug 11, 2026
NESR✅ Genuine Rerating
National Energy Services Reunited Corp.
Conf 95% · Gap +10.3% · Aug 10, 2026
ATI✅ Genuine Rerating
ATI Inc.
Conf 95% · Gap +7.3% · Aug 7, 2026
LNG✅ Genuine Rerating
LNG
Conf 95% · Gap +5.0% · Aug 7, 2026
DAN✅ Genuine Rerating
Dana Incorporated
Conf 95% · Gap +5.5% · Aug 7, 2026
HLX✅ Genuine Rerating
Helix Energy Solutions Group, Inc.
Conf 95% · Gap +5.4% · Aug 7, 2026
TWLO✅ Genuine Rerating
Twilio Inc.
Conf 95% · Gap +21.8% · Aug 7, 2026
TEAM✅ Genuine Rerating
Atlassian Corporation
Conf 95% · Gap +32.2% · Aug 7, 2026
WMG✅ Genuine Rerating
Warner Music Group Corp.
Conf 95% · Gap +5.0% · Aug 3, 2026
AXTI✅ Genuine Rerating
AXT, Inc.
Conf 95% · Gap +11.5% · Jul 31, 2026
GIL✅ Genuine Rerating
Gildan Activewear Inc.
Conf 95% · Gap +5.2% · Jul 31, 2026
LNC✅ Genuine Rerating
Lincoln National Corporation
Conf 95% · Gap +6.1% · Jul 31, 2026
NVT✅ Genuine Rerating
nVent Electric plc
Conf 95% · Gap +8.5% · Jul 31, 2026
COHR✅ Genuine Rerating
Coherent Corp.
Conf 95% · Gap +10.8% · Jul 31, 2026
ETN✅ Genuine Rerating
Eaton Corporation plc
Conf 95% · Gap +8.6% · Jul 31, 2026
APH✅ Genuine Rerating
Amphenol Corporation
Conf 95% · Gap +5.9% · Jul 30, 2026
PRIM✅ Genuine Rerating
Primoris Services Corporation
Conf 95% · Gap +7.0% · Jul 30, 2026
MSFT✅ Genuine Rerating
Microsoft Corporation
Conf 95% · Gap +12.3% · Jul 30, 2026
COHR✅ Genuine Rerating
Coherent Corp.
Conf 95% · Gap +9.6% · Jul 30, 2026
LITE✅ Genuine Rerating
Lumentum Holdings Inc.
Conf 95% · Gap +9.7% · Jul 30, 2026
ARXS✅ Genuine Rerating
Arxis, Inc.
Conf 95% · Gap +5.4% · Jul 30, 2026
ALAB✅ Genuine Rerating
Astera Labs, Inc.
Conf 95% · Gap +13.0% · Jul 30, 2026
MKSI✅ Genuine Rerating
MKS Inc.
Conf 95% · Gap +12.1% · Jul 30, 2026
PWR✅ Genuine Rerating
Quanta Services, Inc.
Conf 95% · Gap +15.3% · Jul 30, 2026
APG✅ Genuine Rerating
APi Group Corporation
Conf 95% · Gap +6.2% · Jul 30, 2026
KLAC✅ Genuine Rerating
KLA Corporation
Conf 95% · Gap +9.8% · Jul 30, 2026
SMTC✅ Genuine Rerating
Semtech Corporation
Conf 95% · Gap +10.9% · Jul 30, 2026
ENTG✅ Genuine Rerating
Entegris, Inc.
Conf 95% · Gap +9.8% · Jul 30, 2026
AMSC✅ Genuine Rerating
American Superconductor Corporation
Conf 95% · Gap +7.3% · Jul 30, 2026
CAKE✅ Genuine Rerating
The Cheesecake Factory Incorporated
Conf 95% · Gap +6.4% · Jul 29, 2026
CTSH✅ Genuine Rerating
Cognizant Technology Solutions Corporation
Conf 95% · Gap +11.2% · Jul 29, 2026
TER✅ Genuine Rerating
Teradyne, Inc.
Conf 95% · Gap +14.7% · Jul 29, 2026
NOV✅ Genuine Rerating
NOV Inc.
Conf 95% · Gap +6.0% · Jul 29, 2026
RCL✅ Genuine Rerating
Royal Caribbean Cruises Ltd.
Conf 95% · Gap +6.2% · Jul 28, 2026
AXTA✅ Genuine Rerating
Axalta Coating Systems Ltd.
Conf 95% · Gap +6.3% · Jul 28, 2026
WDAY✅ Genuine Rerating
Workday, Inc.
Conf 95% · Gap +10.7% · Jul 27, 2026
OMER✅ Genuine Rerating
Omeros Corporation
Conf 95% · Gap +9.9% · Jul 27, 2026
FNF✅ Genuine Rerating
Fidelity National Financial, Inc.
Conf 95% · Gap +6.2% · Jul 27, 2026
AMLX✅ Genuine Rerating
Amylyx Pharmaceuticals, Inc.
Conf 95% · Gap +5.2% · Jul 27, 2026
SSNC✅ Genuine Rerating
SS&C Technologies Holdings, Inc.
Conf 95% · Gap +11.0% · Jul 27, 2026
SAP✅ Genuine Rerating
SAP SE
Conf 95% · Gap +16.1% · Jul 27, 2026
PEGA✅ Genuine Rerating
Pegasystems Inc.
Conf 95% · Gap +5.7% · Jul 27, 2026
FIS✅ Genuine Rerating
Fidelity National Information Services, Inc.
Conf 95% · Gap +5.3% · Jul 27, 2026
LULU✅ Genuine Rerating
lululemon athletica inc.
Conf 95% · Gap +6.3% · Jul 27, 2026
INTU✅ Genuine Rerating
Intuit Inc.
Conf 95% · Gap +8.4% · Jul 27, 2026
RNG✅ Genuine Rerating
RingCentral, Inc.
Conf 95% · Gap +28.5% · Jul 27, 2026
TCOM✅ Genuine Rerating
Trip.com Group Limited
Conf 95% · Gap +5.5% · Jul 27, 2026
NOW✅ Genuine Rerating
ServiceNow, Inc.
Conf 95% · Gap +10.8% · Jul 27, 2026
ADBE✅ Genuine Rerating
Adobe Inc.
Conf 95% · Gap +8.6% · Jul 27, 2026
TRMB✅ Genuine Rerating
Trimble Inc.
Conf 95% · Gap +6.9% · Jul 27, 2026
RELX✅ Genuine Rerating
RELX PLC
Conf 95% · Gap +9.3% · Jul 27, 2026
CTSH✅ Genuine Rerating
Cognizant Technology Solutions Corporation
Conf 95% · Gap +8.1% · Jul 27, 2026
EPAM✅ Genuine Rerating
EPAM Systems, Inc.
Conf 95% · Gap +6.8% · Jul 27, 2026
BL✅ Genuine Rerating
BlackLine, Inc.
Conf 95% · Gap +7.8% · Jul 27, 2026
GWRE✅ Genuine Rerating
Guidewire Software, Inc.
Conf 95% · Gap +8.3% · Jul 27, 2026
OTEX✅ Genuine Rerating
Open Text Corporation
Conf 95% · Gap +6.5% · Jul 27, 2026
DXC✅ Genuine Rerating
DXC Technology Company
Conf 95% · Gap +9.5% · Jul 27, 2026
FRSH✅ Genuine Rerating
Freshworks Inc.
Conf 95% · Gap +8.1% · Jul 27, 2026
VERX✅ Genuine Rerating
Vertex, Inc.
Conf 95% · Gap +11.1% · Jul 27, 2026
RYAN✅ Genuine Rerating
Ryan Specialty Holdings, Inc.
Conf 95% · Gap +5.6% · Jul 27, 2026
JBS✅ Genuine Rerating
JBS N.V.
Conf 95% · Gap +5.4% · Jul 27, 2026
ALKT✅ Genuine Rerating
Alkami Technology, Inc.
Conf 95% · Gap +6.8% · Jul 27, 2026
SWK✅ Genuine Rerating
Stanley Black & Decker, Inc.
Conf 95% · Gap +6.0% · Jul 27, 2026
UHS✅ Genuine Rerating
Universal Health Services, Inc.
Conf 95% · Gap +5.1% · Jul 24, 2026
T✅ Genuine Rerating
AT&T Inc.
Conf 95% · Gap +5.0% · Jul 23, 2026
ROP✅ Genuine Rerating
Roper Technologies, Inc.
Conf 95% · Gap +9.6% · Jul 23, 2026
RTX✅ Genuine Rerating
RTX Corporation
Conf 95% · Gap +5.2% · Jul 23, 2026
ALLE✅ Genuine Rerating
Allegion plc
Conf 95% · Gap +8.3% · Jul 23, 2026
IQV✅ Genuine Rerating
IQVIA Holdings Inc.
Conf 95% · Gap +9.1% · Jul 23, 2026
AMBP✅ Genuine Rerating
Ardagh Metal Packaging S.A.
Conf 95% · Gap +9.6% · Jul 23, 2026
MMM✅ Genuine Rerating
3M Company
Conf 95% · Gap +6.3% · Jul 22, 2026
ABT✅ Genuine Rerating
Abbott Laboratories
Conf 95% · Gap +6.7% · Jul 16, 2026
ACVA✅ Genuine Rerating
ACV Auctions Inc.
Conf 92% · Gap +13.2% · Aug 11, 2026
CORZ✅ Genuine Rerating
Core Scientific, Inc.
Conf 92% · Gap +9.8% · Jul 30, 2026
INIO✅ Genuine Rerating
Innio N.V.
Conf 92% · Gap +13.8% · Jul 30, 2026
AMKR✅ Genuine Rerating
Amkor Technology, Inc.
Conf 92% · Gap +10.0% · Jul 30, 2026
FORM✅ Genuine Rerating
FormFactor, Inc.
Conf 92% · Gap +22.2% · Jul 30, 2026
CIEN✅ Genuine Rerating
Ciena Corporation
Conf 92% · Gap +8.7% · Jul 30, 2026
THC✅ Genuine Rerating
Tenet Healthcare Corporation
Conf 92% · Gap +18.1% · Jul 24, 2026
LMT✅ Genuine Rerating
Lockheed Martin Corporation
Conf 91% · Gap +6.0% · Jul 23, 2026
REPL✅ Genuine Rerating
Replimune Group, Inc.
Conf 89% · Gap +110.4% · Jul 31, 2026
DFNS✅ Genuine Rerating
T3 Defense Inc.
Conf 89% · Gap +12775.0% · Jul 20, 2026
NEOG✅ Genuine Rerating
Neogen Corporation
Conf 88% · Gap +11.7% · Jul 30, 2026
NBIS✅ Genuine Rerating
Nebius Group N.V.
Conf 87% · Gap +16.1% · Jul 30, 2026
ECL✅ Genuine Rerating
Ecolab Inc.
Conf 87% · Gap +5.3% · Jul 29, 2026
G✅ Genuine Rerating
Genpact Limited
Conf 87% · Gap +8.0% · Jul 29, 2026
SHW✅ Genuine Rerating
The Sherwin-Williams Company
Conf 87% · Gap +6.2% · Jul 28, 2026
STEP✅ Genuine Rerating
StepStone Group Inc.
Conf 87% · Gap +7.9% · Jul 27, 2026
TMO✅ Genuine Rerating
Thermo Fisher Scientific Inc.
Conf 87% · Gap +9.0% · Jul 23, 2026
EFOR✅ Genuine Rerating
Everforth, Inc.
Conf 87% · Gap +9.4% · Jul 22, 2026
ORLY✅ Genuine Rerating
O'Reilly Automotive, Inc.
Conf 87% · Gap +6.2% · Jul 21, 2026
ABNB✅ Genuine Rerating
Airbnb, Inc.
Conf 83% · Gap +8.6% · Aug 7, 2026
FERG✅ Genuine Rerating
Ferguson Enterprises Inc.
Conf 83% · Gap +7.5% · Aug 3, 2026
SFM✅ Genuine Rerating
Sprouts Farmers Market, Inc.
Conf 83% · Gap +10.7% · Jul 30, 2026
ETN✅ Genuine Rerating
Eaton Corporation plc
Conf 83% · Gap +5.4% · Jul 30, 2026
BIYA✅ Genuine Rerating
Baiya International Group Inc.
Conf 80% · Gap +87.9% · Jul 20, 2026
QMCO✅ Genuine Rerating
QMCO
Conf 79% · Gap +23.3% · Aug 11, 2026
BHC✅ Genuine Rerating
Bausch Health Companies Inc.
Conf 79% · Gap +6.2% · Jul 30, 2026
PCOR✅ Genuine Rerating
Procore Technologies, Inc.
Conf 79% · Gap +11.6% · Jul 30, 2026
TRI✅ Genuine Rerating
Thomson Reuters Corporation
Conf 79% · Gap +6.1% · Jul 27, 2026
CLF✅ Genuine Rerating
Cleveland-Cliffs Inc.
Conf 79% · Gap +12.9% · Jul 23, 2026
ARM✅ Genuine Rerating
Arm Holdings plc
Conf 77% · Gap +14.7% · Jul 30, 2026
DXCM✅ Genuine Rerating
DexCom, Inc.
Conf 76% · Gap +7.3% · Jul 31, 2026
TEVA✅ Genuine Rerating
Teva Pharmaceutical Industries Limited
Conf 73% · Gap +6.3% · Jul 30, 2026
LRCX✅ Genuine Rerating
Lam Research Corporation
Conf 73% · Gap +26.1% · Jul 30, 2026
RGEN✅ Genuine Rerating
Repligen Corporation
Conf 70% · Gap +6.6% · Jul 28, 2026
AEIS✅ Genuine Rerating
Advanced Energy Industries, Inc.
Conf 69% · Gap +5.8% · Aug 3, 2026
BLZE✅ Genuine Rerating
Backblaze, Inc.
Conf 69% · Gap +6.7% · Aug 3, 2026
TEVA✅ Genuine Rerating
Teva Pharmaceutical Industries Limited
Conf 69% · Gap +8.3% · Jul 29, 2026
TRU✅ Genuine Rerating
TransUnion
Conf 69% · Gap +5.5% · Jul 28, 2026
GM✅ Genuine Rerating
General Motors Company
Conf 69% · Gap +5.4% · Jul 27, 2026
NIQ✅ Genuine Rerating
NIQ Global Intelligence plc
Conf 68% · Gap +17.4% · Aug 11, 2026
MWH✅ Genuine Rerating
SOLV Energy, Inc.
Conf 68% · Gap +5.5% · Jul 30, 2026
ACM✅ Genuine Rerating
AECOM
Conf 68% · Gap +5.1% · Jul 27, 2026
MAN✅ Genuine Rerating
ManpowerGroup Inc.
Conf 66% · Gap +19.9% · Jul 16, 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