Gagnon Securities LLC
- SEC CIK
- 0001125725
- Latest filing
- Aug 4, 2026
Holdings in Q3 2021
Holdings as of Sep 30, 2021, filed Nov 12, 2021. Long positions only; changes compare share counts with Q2 2021.
- Positions
- 112
- +1 vs. Q2 2021
- Portfolio value
- $673.1M
- −$31.2M (−4.4%) vs. Q2 2021
| Security | Class | Shares | Value | % of portfolio | Share change | Action | History |
|---|---|---|---|---|---|---|---|
| CEMIChembio Diagnostics, Inc. | COM NEW | 47,793 | $119.0K | <0.1% | −232−0.5% | Reduced | History |
| APTOAptose Biosciences Inc. | COM NEW | 59,380 | $129.0K | <0.1% | −50,187−45.8% | Reduced | History |
| Rada Electr Inds LtdM81863124 | COM PAR NEW | 13,756 | $146.0K | <0.1% | −14,973−52.1% | Reduced | – |
| DLNGDynagas LNG Partners LP | COM UNIT LTD PT | 54,112 | $166.0K | <0.1% | 00.0% | Unchanged | History |
| Ces Energy Solutions Corp15713J104 | COM | 111,370 | $167.0K | <0.1% | −371−0.3% | Reduced | – |
| ZGNXZogenix, Inc. | COM NEW | 12,500 | $190.0K | <0.1% | 00.0% | Unchanged | History |
| ZENZendesk, Inc. | COM | 1,892 | $220.0K | <0.1% | +60+3.3% | Added | History |
| Arc Resources Ltd00208D408 | COM | 23,623 | $221.0K | <0.1% | 00.0% | Unchanged | – |
| Royal Dutch Shell PLC780259206 | SPONS ADR A | 5,156 | $230.0K | <0.1% | −18−0.3% | Reduced | – |
| VIAVViavi Solutions Inc. | COM | 14,714 | $232.0K | <0.1% | +413+2.9% | Added | History |
| VTOLBristow Group Inc. | COM | 7,380 | $235.0K | <0.1% | +7,380 | New | History |
| Vonage Holdings Corp92886T201 | COM | 14,632 | $236.0K | <0.1% | +289+2.0% | Added | – |
| RBLXRoblox Corp | Stock | 3,232 | $244.0K | <0.1% | −4−0.1% | Reduced | History |
| HPHelmerich & Payne, Inc. | COM | 9,319 | $255.0K | <0.1% | +79+0.9% | Added | History |
| NCSMNCS Multistage Holdings, Inc. | COM NEW | 10,140 | $290.0K | <0.1% | +121+1.2% | Added | History |
| CLBCore Laboratories Inc. | COM | 10,835 | $301.0K | <0.1% | +20+0.2% | Added | History |
| RESRPC Inc | COM | 63,030 | $306.0K | <0.1% | +183+0.3% | Added | History |
| MUMicron Technology Inc | Stock | 4,572 | $325.0K | <0.1% | 00.0% | Unchanged | History |
| EHTHeHealth, Inc. | COM | 8,279 | $335.0K | <0.1% | 00.0% | Unchanged | History |
| MRKMerck & Co., Inc. | Stock | 4,563 | $343.0K | 0.1% | −40−0.9% | Reduced | History |
| Sailpoint Technologies Holdings, Inc.78781P105 | COM | 8,017 | $344.0K | 0.1% | +1,113+16.1% | Added | – |
| EOGEOG Resources Inc | Stock | 4,323 | $347.0K | 0.1% | −2,131−33.0% | Reduced | History |
| BFLYButterfly Network, Inc. | COM CL A | 33,366 | $348.0K | 0.1% | −300−0.9% | Reduced | History |
| METAMeta Platforms, Inc. | Stock | 1,058 | $359.0K | 0.1% | 00.0% | Unchanged | History |
| CHGGChegg, Inc | COM | 5,573 | $379.0K | 0.1% | −3−0.1% | Reduced | History |
| LPSNLiveperson Inc | COM | 6,788 | $400.0K | 0.1% | +280+4.3% | Added | History |
| GOOGLAlphabet Inc. | Stock | 151 | $404.0K | 0.1% | 00.0% | Unchanged | History |
| Monmouth Real Estate Investment Corp609720107 | CL A | 22,209 | $414.0K | 0.1% | 00.0% | Unchanged | – |
| ETSYEtsy Inc | COM | 2,163 | $450.0K | 0.1% | −2−0.1% | Reduced | History |
| VTRSViatris Inc | Stock | 34,679 | $470.0K | 0.1% | −93−0.3% | Reduced | History |
| TTOOT2 Biosystems, Inc. | COM | 514,818 | $471.0K | 0.1% | −354,746−40.8% | Reduced | History |
| ETEnergy Transfer LP | COM UT LTD PTN | 51,656 | $495.0K | 0.1% | +816+1.6% | Added | History |
| RRCRange Resources Corp | COM | 22,157 | $501.0K | 0.1% | 00.0% | Unchanged | History |
| DNNDenison Mines Corp. | COM | 351,064 | $516.0K | 0.1% | 00.0% | Unchanged | History |
| GDRXGoodRx Holdings, Inc. | COM CL A | 12,590 | $516.0K | 0.1% | +54+0.4% | Added | History |
| WBAWalgreens Boots Alliance, Inc. | COM | 10,997 | $517.0K | 0.1% | 00.0% | Unchanged | History |
| PETSPetmed Express Inc | COM | 19,365 | $520.0K | 0.1% | 00.0% | Unchanged | History |
| SEMA4 Holdings Corp81663L119 | *W EXP 07/22/202 | 245,973 | $521.0K | 0.1% | +245,973 | New | – |
| EQCEQC Liquidating Trust | COM SH BEN INT | 20,311 | $528.0K | 0.1% | 00.0% | Unchanged | History |
| Sysmex CorpJ7864H102 | COM | 4,514 | $564.0K | 0.1% | 00.0% | Unchanged | – |
| WFCWells Fargo & Company | Stock | 13,056 | $606.0K | 0.1% | 00.0% | Unchanged | History |
| Ocado Group PLCG6718L106 | COM | 27,884 | $625.0K | 0.1% | +2,604+10.3% | Added | – |
| Exchange Traded Concepts Tr301505715 | NORTH SHOR GBL | 8,162 | $627.0K | 0.1% | 00.0% | Unchanged | – |
| SLGCWSomaLogic, Inc. | *W EXP 03/01/202 | 182,095 | $628.0K | 0.1% | +182,095 | New | History |
| PYPLPayPal Holdings, Inc. | Stock | 2,512 | $654.0K | 0.1% | +20+0.8% | Added | History |
| NVDANVIDIA Corp | Stock | 3,444 | $713.0K | 0.1% | +44+1.3% | AddedConverted for a 4-for-1 split | History |
| URGUr-Energy Inc | COM | 428,204 | $737.0K | 0.1% | 00.0% | Unchanged | History |
| MRVLMarvell Technology, Inc. | COM | 12,650 | $763.0K | 0.1% | −6,200−32.9% | Reduced | History |
| WLYJohn Wiley & Sons, Inc. | CL A | 14,649 | $765.0K | 0.1% | +1,253+9.4% | Added | History |
| Sprott Physical Uranium Unt85210A104 | COM | 74,069 | $830.0K | 0.1% | +74,069 | New | – |
| Meridian Bioscience Inc589584101 | COM | 44,361 | $854.0K | 0.1% | +44,361 | New | – |
| Nintendo Ltd ADR654445303 | ADR | 15,015 | $914.0K | 0.1% | +449+3.1% | Added | – |
| TLMDSOC Telemed, Inc. | COM CL A | 410,285 | $927.0K | 0.1% | +557+0.1% | Added | History |
| DVNDevon Energy Corp | Stock | 27,096 | $962.0K | 0.1% | −220,784−89.1% | Reduced | History |
| OSUROrasure Technologies Inc | COM | 87,801 | $993.0K | 0.1% | +87,801 | New | History |
| HOLXHologic Inc | COM | 14,950 | $1.10M | 0.2% | +14,950 | New | History |
| E2open Parent Holdings, Inc.29788T111 | *W EXP 02/04/202 | 440,906 | $1.28M | 0.2% | +43,990+11.1% | Added | – |
| FLXNFlexion Therapeutics Inc | COM | 211,141 | $1.29M | 0.2% | +2,111+1.0% | Added | History |
| SLGSL Green Realty Corp | COM | 19,095 | $1.35M | 0.2% | 00.0% | Unchanged | History |
| NEXNextier Oilfield Solutions Inc. | COM | 302,179 | $1.39M | 0.2% | +1,854+0.6% | Added | History |
| PFEPfizer Inc | Stock | 33,957 | $1.46M | 0.2% | 00.0% | Unchanged | History |
| TAT&T Inc. | Stock | 57,162 | $1.54M | 0.2% | −598−1.0% | Reduced | History |
| GNTXGentex Corp | COM | 46,823 | $1.54M | 0.2% | +1,421+3.1% | Added | History |
| MCHPMicrochip Technology Inc | Stock | 10,444 | $1.60M | 0.2% | +106+1.0% | Added | History |
| DRRXDurect Corp | COM | 1,327,404 | $1.70M | 0.3% | −903−0.1% | Reduced | History |
| TPRTapestry, Inc. | COM | 46,798 | $1.73M | 0.3% | +1,807+4.0% | Added | History |
| RDHLRedHill Biopharma Ltd. | SPONSORED ADS | 392,245 | $1.80M | 0.3% | +49,627+14.5% | Added | History |
| XOMExxonMobil Holdings Corp | COM | 31,000 | $1.82M | 0.3% | −240−0.8% | Reduced | History |
| TFFPTFF Pharmaceuticals, Inc. | COM | 282,229 | $2.18M | 0.3% | −176,372−38.5% | Reduced | History |
| GNRCGenerac Holdings Inc. | Stock | 6,877 | $2.81M | 0.4% | +8+0.1% | Added | History |
| MIROMiromatrix Medical Inc. | COM | 423,549 | $2.95M | 0.4% | −12,360−2.8% | Reduced | History |
| AKAMAkamai Technologies Inc | COM | 32,242 | $3.37M | 0.5% | +111+0.3% | Added | History |
| PRLBProto Labs Inc | COM | 58,725 | $3.91M | 0.6% | −867−1.5% | Reduced | History |
| CTRECareTrust REIT, Inc. | COM | 217,250 | $4.42M | 0.7% | +455+0.2% | Added | History |
| PSIXPower Solutions International, Inc. | Stock | 1,172,070 | $4.69M | 0.7% | +1,563+0.1% | Added | History |
| Opsens Incorporated683823108 | Common Stock | 2,200,636 | $5.26M | 0.8% | −5,435−0.2% | Reduced | – |
| WGSGeneDx Holdings Corp. | COMMON STOCK | 696,043 | $5.28M | 0.8% | +696,043 | New | History |
| PNTGPennant Group, Inc. | COM | 192,455 | $5.41M | 0.8% | +340+0.2% | Added | History |
| CELCCelcuity Inc. | COM | 306,948 | $5.53M | 0.8% | −12,359−3.9% | Reduced | History |
| CSLTCastlight Health, Inc. | CL B | 4,111,408 | $6.46M | 1.0% | −10,855−0.3% | Reduced | History |
| ONTOOnto Innovation Inc. | COM | 101,643 | $7.34M | 1.1% | −81,542−44.5% | Reduced | History |
| CAKECheesecake Factory Inc | COM | 170,178 | $8.00M | 1.2% | +141,556+494.6% | Added | History |
| CNFCNFinance Holdings Ltd. | SPON ADS | 1,395,043 | $8.23M | 1.2% | −1240.0% | Reduced | History |
| CMGChipotle Mexican Grill Inc | COM | 4,856 | $8.83M | 1.3% | +28+0.6% | Added | History |
| FRSHFreshworks Inc. | Stock | 210,032 | $8.97M | 1.3% | +210,032 | New | History |
| SLGCSomaLogic, Inc. | CLASS A COM | 925,343 | $11.5M | 1.7% | +925,343 | New | History |
| ZUOZuora Inc | COM CL A | 709,165 | $11.8M | 1.7% | +405,745+133.7% | Added | History |
| EQIXEquinix Inc | COM | 16,888 | $13.3M | 2.0% | +70.0% | Added | History |
| BLFSBiolife Solutions Inc | COM NEW | 319,343 | $13.5M | 2.0% | −63,847−16.7% | Reduced | History |
| EPDEnterprise Products Partners L.P. | Stock | 631,675 | $13.7M | 2.0% | +4,512+0.7% | Added | History |
| APENApollo Endosurgery, Inc. | COM | 1,540,928 | $14.0M | 2.1% | −29,691−1.9% | Reduced | History |
| EVAEnviva, LLC | COM UNIT | 258,297 | $14.0M | 2.1% | +258,297 | New | History |
| PROFProfound Medical Corp. | COM NEW | 966,536 | $14.2M | 2.1% | +165,691+20.7% | Added | History |
| QDELQuidelOrtho Corp | COM | 100,625 | $14.2M | 2.1% | +26,872+36.4% | Added | History |
| IRBTiRobot Corp | COM | 187,796 | $14.7M | 2.2% | +754+0.4% | Added | History |
| NEWRNew Relic, Inc. | COM | 215,040 | $15.4M | 2.3% | +286+0.1% | Added | History |
| KMXCarMax Inc | COM | 123,402 | $15.8M | 2.3% | −155−0.1% | Reduced | History |
| NVGSNavigator Holdings Ltd. | SHS | 1,811,079 | $16.1M | 2.4% | +2,623+0.1% | Added | History |
| SCWXSecureWorks Corp | CL A | 822,897 | $16.4M | 2.4% | +167,753+25.6% | Added | History |
| YEXTYext, Inc. | COM | 1,372,552 | $16.5M | 2.5% | +242,206+21.4% | Added | History |
Sold out since Q2 2021 (10)
Positions held at the end of Q2 2021 that are gone from this filing.
| Security | Class | Shares in Q2 2021 | Value in Q2 2021 | % of portfolio in Q2 2021 | History |
|---|---|---|---|---|---|
| CM Life Sciences Inc18978W208 | UNIT 09/01/2025 | 656,269 | $10.3M | 1.5% | – |
| CM Life Sciences II Inc125842203 | UNIT 02/25/2028 | 761,193 | $10.2M | 1.5% | – |
| CM Life Sciences III Inc125841205 | UNIT 04/30/2028 | 468,907 | $5.13M | 0.7% | – |
| Uranium Participation Corporat917017105 | COM | 148,149 | $654.0K | 0.1% | – |
| CM Life Sciences Inc18978W109 | COM CL A | 38,117 | $534.0K | 0.1% | – |
| Blue Prism Group PLCG1193C101 | COM NEW | 28,374 | $317.0K | <0.1% | – |
| DMTKDermTech, Inc. | COM | 6,072 | $252.0K | <0.1% | History |
| CM Life Sciences Inc18978W117 | *W EXP 09/04/202 | 26,984 | $124.0K | <0.1% | – |
| QUMUQumu Corp | COM | 35,999 | $104.0K | <0.1% | History |
| MNKTQKeenova Therapeutics plc | Stock | 218,143 | $63.0K | <0.1% | History |