Gagnon Securities LLC
- SEC CIK
- 0001125725
- Latest filing
- Aug 4, 2026
Holdings in Q3 2025
Holdings as of Sep 30, 2025, filed Nov 3, 2025. Long positions only; changes compare share counts with Q2 2025.
- Positions
- 86
- −1 vs. Q2 2025
- Portfolio value
- $498.5M
- +$6.15M (+1.2%) vs. Q2 2025
| Security | Class | Shares | Value | % of portfolio | Share change | Action | History |
|---|---|---|---|---|---|---|---|
| ALSumisho Air Lease Corp | CL A | 605,618 | $38.5M | 7.7% | −130,819−17.8% | Reduced | History |
| ENSGEnsign Group, Inc | COM | 183,030 | $31.6M | 6.3% | −25,964−12.4% | Reduced | History |
| WGSGeneDx Holdings Corp. | COM CL A | 269,066 | $29.0M | 5.8% | −2,167−0.8% | Reduced | History |
| AMRCAmeresco, Inc. | CL A | 859,409 | $28.9M | 5.8% | −10,836−1.2% | Reduced | History |
| CDNACareDx, Inc. | COM | 1,729,425 | $25.1M | 5.0% | +180,513+11.7% | Added | History |
| FRSHFreshworks Inc. | Stock | 1,865,818 | $22.0M | 4.4% | +941,228+101.8% | Added | History |
| ISRGIntuitive Surgical Inc | COM NEW | 43,359 | $19.4M | 3.9% | −10,465−19.4% | Reduced | History |
| EPDEnterprise Products Partners L.P. | Stock | 528,752 | $16.5M | 3.3% | +41,162+8.4% | Added | History |
| TMCITreace Medical Concepts, Inc. | COM | 2,258,238 | $15.2M | 3.0% | +8,090+0.4% | Added | History |
| BLBlackline, Inc. | COM | 278,919 | $14.8M | 3.0% | +26,678+10.6% | Added | History |
| BLFSBiolife Solutions Inc | COM NEW | 535,757 | $13.7M | 2.7% | −4,139−0.8% | Reduced | History |
| EQIXEquinix Inc | COM | 17,253 | $13.5M | 2.7% | −139−0.8% | Reduced | History |
| NVGSNavigator Holdings Ltd. | SHS | 865,860 | $13.4M | 2.7% | −5,148−0.6% | Reduced | History |
| GNRCGenerac Holdings Inc. | Stock | 77,561 | $13.0M | 2.6% | +9,372+13.7% | Added | History |
| CAKECheesecake Factory Inc | COM | 227,336 | $12.4M | 2.5% | −29,018−11.3% | Reduced | History |
| ASPNAspen Aerogels Inc | COM | 1,754,833 | $12.2M | 2.5% | −144,275−7.6% | Reduced | History |
| PCRXPacira BioSciences, Inc. | COM | 449,717 | $11.6M | 2.3% | +81,364+22.1% | Added | History |
| CARGCarGurus, Inc. | COM CL A | 272,308 | $10.1M | 2.0% | −52,613−16.2% | Reduced | History |
| KMXCarMax Inc | COM | 225,629 | $10.1M | 2.0% | +62,212+38.1% | Added | History |
| EXASExact Sciences Corp | COM | 179,442 | $9.82M | 2.0% | −99,347−35.6% | Reduced | History |
| VERXVertex, Inc. | Stock | 378,685 | $9.39M | 1.9% | +108,839+40.3% | Added | History |
| PROFProfound Medical Corp. | COM NEW | 1,733,040 | $8.47M | 1.7% | −16,873−1.0% | Reduced | History |
| DVDoubleVerify Holdings, Inc. | COM | 679,917 | $8.15M | 1.6% | +314,917+86.3% | Added | History |
| FIVNFive9, Inc. | COM | 299,403 | $7.25M | 1.5% | −108,049−26.5% | Reduced | History |
| HZOMarinemax Inc | COM | 261,349 | $6.62M | 1.3% | +261,349 | New | History |
| PSIXPower Solutions International, Inc. | Stock | 64,770 | $6.36M | 1.3% | −276,841−81.0% | Reduced | History |
| AOSLAlpha & Omega Semiconductor Ltd | SHS | 215,349 | $6.02M | 1.2% | −631−0.3% | Reduced | History |
| AMPLAmplitude, Inc. | Stock | 510,731 | $5.48M | 1.1% | +510,731 | New | History |
| PRLBProto Labs Inc | COM | 108,749 | $5.44M | 1.1% | −5,825−5.1% | Reduced | History |
| OSUROrasure Technologies Inc | COM | 1,594,771 | $5.12M | 1.0% | −9,371−0.6% | Reduced | History |
| CMGChipotle Mexican Grill Inc | COM | 120,395 | $4.72M | 0.9% | −26,153−17.8% | Reduced | History |
| CTRECareTrust REIT, Inc. | COM | 135,685 | $4.71M | 0.9% | −14,863−9.9% | Reduced | History |
| SAMBoston Beer Co Inc | CL A | 21,508 | $4.55M | 0.9% | −3,543−14.1% | Reduced | History |
| KLTRKaltura Inc | COM | 2,885,976 | $4.16M | 0.8% | +709,598+32.6% | Added | History |
| NVDANVIDIA Corp | Stock | 20,573 | $3.84M | 0.8% | −291−1.4% | Reduced | History |
| WCPRFWhitecap Resources Inc. | COM | 486,570 | $3.71M | 0.7% | −1,209−0.2% | Reduced | History |
| QDELQuidelOrtho Corp | COM | 122,499 | $3.61M | 0.7% | +49,622+68.1% | Added | History |
| PNTGPennant Group, Inc. | COM | 141,682 | $3.57M | 0.7% | −9,806−6.5% | Reduced | History |
| ICUIIcu Medical Inc | COM | 28,751 | $3.45M | 0.7% | −3,564−11.0% | Reduced | History |
| CELCCelcuity Inc. | COM | 53,955 | $2.67M | 0.5% | −35−0.1% | Reduced | History |
| TPRTapestry, Inc. | COM | 21,453 | $2.43M | 0.5% | −1,967−8.4% | Reduced | History |
| MCHPMicrochip Technology Inc | Stock | 27,025 | $1.74M | 0.3% | −411−1.5% | Reduced | History |
| GNLGlobal Net Lease, Inc. | COM NEW | 193,790 | $1.58M | 0.3% | +88,238+83.6% | Added | History |
| GNTXGentex Corp | COM | 55,214 | $1.56M | 0.3% | −1,236−2.2% | Reduced | History |
| SLGSL Green Realty Corp | COM | 25,986 | $1.55M | 0.3% | −176−0.7% | Reduced | History |
| Nintendo Ltd ADR654445303 | ADR | 70,150 | $1.50M | 0.3% | −1,713−2.4% | Reduced | – |
| CNFCNFinance Holdings Ltd. | SPONSORED ADS | 317,201 | $1.33M | 0.3% | +123,562+63.8% | AddedConverted for a 1-for-10 split | History |
| PFEPfizer Inc | Stock | 43,160 | $1.10M | 0.2% | −63−0.1% | Reduced | History |
| PTENPatterson Uti Energy Inc | COM | 208,697 | $1.08M | 0.2% | +4,302+2.1% | Added | History |
| NCNOnCino, Inc. | COM | 38,258 | $1.04M | 0.2% | +1,526+4.2% | Added | History |
| TAT&T Inc. | Stock | 33,919 | $957.9K | 0.2% | +5,564+19.6% | Added | History |
| FLGFlagstar Bank, National Association | Stock | 74,953 | $865.7K | 0.2% | −42,922−36.4% | Reduced | History |
| XOMExxonMobil Holdings Corp | COM | 7,228 | $815.0K | 0.2% | −7−0.1% | Reduced | History |
| SHOPShopify Inc. | Stock | 5,345 | $794.3K | 0.2% | −363−6.4% | Reduced | History |
| DVNDevon Energy Corp | Stock | 20,278 | $710.9K | 0.1% | −33−0.2% | Reduced | History |
| GOOGLAlphabet Inc. | Stock | 2,556 | $621.4K | 0.1% | 00.0% | Unchanged | History |
| METAMeta Platforms, Inc. | Stock | 839 | $616.1K | 0.1% | 00.0% | Unchanged | History |
| TECHBIO-TECHNE Corp | COM | 9,614 | $534.8K | 0.1% | +344+3.7% | Added | History |
| MRVLMarvell Technology, Inc. | COM | 6,327 | $531.9K | 0.1% | +231+3.8% | Added | History |
| APPSDigital Turbine, Inc. | COM NEW | 81,839 | $523.8K | 0.1% | 00.0% | Unchanged | History |
| BLZEBackblaze, Inc. | COM CL A | 55,393 | $514.0K | 0.1% | +264+0.5% | Added | History |
| MUMicron Technology Inc | Stock | 2,938 | $491.6K | 0.1% | −65−2.2% | Reduced | History |
| HIMXHimax Technologies, Inc. | SPONSORED ADR | 54,488 | $481.1K | 0.1% | −92−0.2% | Reduced | History |
| SBUXStarbucks Corp | Stock | 5,638 | $477.0K | 0.1% | −4−0.1% | Reduced | History |
| GOOGAlphabet Inc. | Stock | 1,932 | $470.5K | 0.1% | +1,932 | New | History |
| CVLTCommvault Systems Inc | COM | 2,418 | $456.5K | 0.1% | −461−16.0% | Reduced | History |
| CGNXCognex Corp | COM | 9,772 | $442.7K | 0.1% | +48+0.5% | Added | History |
| PYPLPayPal Holdings, Inc. | Stock | 6,581 | $441.3K | 0.1% | +64+1.0% | Added | History |
| MTSIMACOM Technology Solutions Holdings, Inc. | COM | 3,142 | $391.1K | 0.1% | +3,142 | New | History |
| LTHLife Time Group Holdings, Inc. | COMMON STOCK | 13,538 | $373.6K | 0.1% | −61−0.4% | Reduced | History |
| ATNMActinium Pharmaceuticals, Inc. | COM | 226,257 | $362.0K | 0.1% | −365−0.2% | Reduced | History |
| MRKMerck & Co., Inc. | Stock | 4,038 | $338.9K | 0.1% | −20.0% | Reduced | History |
| ETSYEtsy Inc | COM | 4,970 | $330.0K | 0.1% | −20−0.4% | Reduced | History |
| Ces Energy Solutions Corp15713J104 | COM | 46,075 | $310.9K | 0.1% | −105−0.2% | Reduced | – |
| VIAVViavi Solutions Inc. | COM | 23,992 | $304.5K | 0.1% | +141+0.6% | Added | History |
| WEAVWeave Communications, Inc. | Stock | 45,543 | $304.2K | 0.1% | +329+0.7% | Added | History |
| ONTOOnto Innovation Inc. | COM | 2,242 | $289.7K | 0.1% | +2,242 | New | History |
| RMBSRambus Inc | COM | 2,711 | $282.5K | 0.1% | +2,711 | New | History |
| MSFTMicrosoft Corp | Stock | 506 | $262.1K | 0.1% | −186−26.9% | Reduced | History |
| RNTXRein Therapeutics, Inc. | COM NEW | 228,692 | $261.9K | 0.1% | +156,947+218.8% | Added | History |
| RNGRingCentral, Inc. | CL A | 8,122 | $230.2K | <0.1% | +111+1.4% | Added | History |
| GRSDGRANDSTAND Ltd | ORDINARY SHARES | 23,062 | $188.6K | <0.1% | +620+2.8% | Added | History |
| GDRXGoodRx Holdings, Inc. | COM CL A | 44,063 | $186.4K | <0.1% | +313+0.7% | Added | History |
| SVVSavers Value Village, Inc. | COM | 13,764 | $182.4K | <0.1% | +13,764 | New | History |
| PETSPetmed Express Inc | COM | 23,841 | $59.8K | <0.1% | −48−0.2% | Reduced | History |
| RDHLRedHill Biopharma Ltd. | SPONSORED ADR | 17,822 | $38.7K | <0.1% | +17,822 | New | History |
Sold out since Q2 2025 (9)
Positions held at the end of Q2 2025 that are gone from this filing.
| Security | Class | Shares in Q2 2025 | Value in Q2 2025 | % of portfolio in Q2 2025 | History |
|---|---|---|---|---|---|
| TTDTrade Desk, Inc. | Stock | 6,512 | $468.8K | 0.1% | History |
| SHOOSteven Madden, Ltd. | COM | 17,583 | $421.6K | 0.1% | History |
| DRRXDurect Corp | COM NEW | 403,884 | $256.5K | 0.1% | History |
| MBLYMobileye Global Inc. | Stock | 13,892 | $249.8K | 0.1% | History |
| WBAWalgreens Boots Alliance, Inc. | COM | 20,184 | $231.7K | <0.1% | History |
| AKAMAkamai Technologies Inc | COM | 2,535 | $202.2K | <0.1% | History |
| DHXDhi Group, Inc. | COM | 56,401 | $167.5K | <0.1% | History |
| WBDWarner Bros. Discovery, Inc. | Stock | 14,576 | $167.0K | <0.1% | History |
| YEXTYext, Inc. | COM | 12,944 | $110.0K | <0.1% | History |