Gagnon Securities LLC
- SEC CIK
- 0001125725
- Latest filing
- Aug 4, 2026
Holdings in Q4 2025
Holdings as of Dec 31, 2025, filed Feb 13, 2026. Long positions only; changes compare share counts with Q3 2025.
- Positions
- 86
- 0 vs. Q3 2025
- Portfolio value
- $491.1M
- −$7.42M (−1.5%) vs. Q3 2025
| Security | Class | Shares | Value | % of portfolio | Share change | Action | History |
|---|---|---|---|---|---|---|---|
| CDNACareDx, Inc. | COM | 1,774,890 | $33.4M | 6.8% | +45,465+2.6% | Added | History |
| WGSGeneDx Holdings Corp. | COM CL A | 253,534 | $33.0M | 6.7% | −15,532−5.8% | Reduced | History |
| ALSumisho Air Lease Corp | CL A | 496,957 | $31.9M | 6.5% | −108,661−17.9% | Reduced | History |
| ENSGEnsign Group, Inc | COM | 180,549 | $31.5M | 6.4% | −2,481−1.4% | Reduced | History |
| AMRCAmeresco, Inc. | CL A | 832,884 | $24.4M | 5.0% | −26,525−3.1% | Reduced | History |
| ISRGIntuitive Surgical Inc | COM NEW | 31,797 | $18.0M | 3.7% | −11,562−26.7% | Reduced | History |
| EXASExact Sciences Corp | COM | 167,414 | $17.0M | 3.5% | −12,028−6.7% | Reduced | History |
| EPDEnterprise Products Partners L.P. | Stock | 527,601 | $16.9M | 3.4% | −1,151−0.2% | Reduced | History |
| BLBlackline, Inc. | COM | 279,398 | $15.4M | 3.1% | +479+0.2% | Added | History |
| PROFProfound Medical Corp. | COM NEW | 1,944,061 | $15.3M | 3.1% | +211,021+12.2% | Added | History |
| FRSHFreshworks Inc. | Stock | 1,230,011 | $15.1M | 3.1% | −635,807−34.1% | Reduced | History |
| NVGSNavigator Holdings Ltd. | SHS | 861,854 | $14.9M | 3.0% | −4,006−0.5% | Reduced | History |
| EQIXEquinix Inc | COM | 17,142 | $13.1M | 2.7% | −111−0.6% | Reduced | History |
| PCRXPacira BioSciences, Inc. | COM | 501,211 | $13.0M | 2.6% | +51,494+11.5% | Added | History |
| BLFSBiolife Solutions Inc | COM NEW | 534,357 | $12.9M | 2.6% | −1,400−0.3% | Reduced | History |
| FIVNFive9, Inc. | COM | 625,726 | $12.5M | 2.6% | +326,323+109.0% | Added | History |
| KMXCarMax Inc | COM | 320,077 | $12.4M | 2.5% | +94,448+41.9% | Added | History |
| CAKECheesecake Factory Inc | COM | 226,594 | $11.4M | 2.3% | −742−0.3% | Reduced | History |
| CARGCarGurus, Inc. | COM CL A | 270,822 | $10.4M | 2.1% | −1,486−0.5% | Reduced | History |
| GNRCGenerac Holdings Inc. | Stock | 75,593 | $10.3M | 2.1% | −1,968−2.5% | Reduced | History |
| AMPLAmplitude, Inc. | Stock | 698,870 | $8.09M | 1.6% | +188,139+36.8% | Added | History |
| HZOMarinemax Inc | COM | 322,053 | $7.80M | 1.6% | +60,704+23.2% | Added | History |
| TMCITreace Medical Concepts, Inc. | COM | 3,110,575 | $7.62M | 1.6% | +852,337+37.7% | Added | History |
| VERXVertex, Inc. | Stock | 364,643 | $7.28M | 1.5% | −14,042−3.7% | Reduced | History |
| CMGChipotle Mexican Grill Inc | COM | 156,975 | $5.81M | 1.2% | +36,580+30.4% | Added | History |
| PRLBProto Labs Inc | COM | 111,548 | $5.64M | 1.1% | +2,799+2.6% | Added | History |
| DVDoubleVerify Holdings, Inc. | COM | 491,664 | $5.62M | 1.1% | −188,253−27.7% | Reduced | History |
| CELCCelcuity Inc. | COM | 53,401 | $5.33M | 1.1% | −554−1.0% | Reduced | History |
| CTRECareTrust REIT, Inc. | COM | 133,071 | $4.81M | 1.0% | −2,614−1.9% | Reduced | History |
| KLTRKaltura Inc | COM | 2,861,365 | $4.69M | 1.0% | −24,611−0.9% | Reduced | History |
| QDELQuidelOrtho Corp | COM | 159,177 | $4.55M | 0.9% | +36,678+29.9% | Added | History |
| AOSLAlpha & Omega Semiconductor Ltd | SHS | 215,642 | $4.27M | 0.9% | +293+0.1% | Added | History |
| ICUIIcu Medical Inc | COM | 29,073 | $4.15M | 0.8% | +322+1.1% | Added | History |
| WCPRFWhitecap Resources Inc. | COM | 486,122 | $4.08M | 0.8% | −448−0.1% | Reduced | History |
| PNTGPennant Group, Inc. | COM | 137,526 | $3.87M | 0.8% | −4,156−2.9% | Reduced | History |
| NVDANVIDIA Corp | Stock | 20,517 | $3.83M | 0.8% | −56−0.3% | Reduced | History |
| OSUROrasure Technologies Inc | COM | 1,569,782 | $3.80M | 0.8% | −24,989−1.6% | Reduced | History |
| ASPNAspen Aerogels Inc | COM | 1,133,248 | $3.21M | 0.7% | −621,585−35.4% | Reduced | History |
| TPRTapestry, Inc. | COM | 21,447 | $2.74M | 0.6% | −60.0% | Reduced | History |
| PTENPatterson Uti Energy Inc | COM | 352,777 | $2.16M | 0.4% | +144,080+69.0% | Added | History |
| CNFCNFinance Holdings Ltd. | SPONSORED ADS | 316,853 | $1.92M | 0.4% | −348−0.1% | Reduced | History |
| NCNOnCino, Inc. | COM | 73,494 | $1.88M | 0.4% | +35,236+92.1% | Added | History |
| MCHPMicrochip Technology Inc | Stock | 27,162 | $1.73M | 0.4% | +137+0.5% | Added | History |
| GNLGlobal Net Lease, Inc. | COM NEW | 170,510 | $1.47M | 0.3% | −23,280−12.0% | Reduced | History |
| GNTXGentex Corp | COM | 55,672 | $1.30M | 0.3% | +458+0.8% | Added | History |
| SAMBoston Beer Co Inc | CL A | 6,355 | $1.24M | 0.3% | −15,153−70.5% | Reduced | History |
| Nintendo Ltd ADR654445303 | ADR | 70,323 | $1.19M | 0.2% | +173+0.2% | Added | – |
| SLGSL Green Realty Corp | COM | 25,838 | $1.19M | 0.2% | −148−0.6% | Reduced | History |
| PFEPfizer Inc | Stock | 44,353 | $1.10M | 0.2% | +1,193+2.8% | Added | History |
| FLGFlagstar Bank, National Association | Stock | 74,867 | $942.6K | 0.2% | −86−0.1% | Reduced | History |
| XOMExxonMobil Holdings Corp | COM | 7,180 | $864.0K | 0.2% | −48−0.7% | Reduced | History |
| TAT&T Inc. | Stock | 33,227 | $825.4K | 0.2% | −692−2.0% | Reduced | History |
| GOOGLAlphabet Inc. | Stock | 2,556 | $800.0K | 0.2% | 00.0% | Unchanged | History |
| DVNDevon Energy Corp | Stock | 19,111 | $700.0K | 0.1% | −1,167−5.8% | Reduced | History |
| GOOGAlphabet Inc. | Stock | 1,939 | $608.5K | 0.1% | +7+0.4% | Added | History |
| SHOPShopify Inc. | Stock | 3,684 | $593.0K | 0.1% | −1,661−31.1% | Reduced | History |
| GRSDGRANDSTAND Ltd | ORDINARY SHARES | 105,569 | $576.4K | 0.1% | +82,507+357.8% | Added | History |
| TECHBIO-TECHNE Corp | COM | 9,614 | $565.4K | 0.1% | 00.0% | Unchanged | History |
| MTSIMACOM Technology Solutions Holdings, Inc. | COM | 3,295 | $564.4K | 0.1% | +153+4.9% | Added | History |
| METAMeta Platforms, Inc. | Stock | 839 | $553.8K | 0.1% | 00.0% | Unchanged | History |
| MRVLMarvell Technology, Inc. | COM | 6,327 | $537.7K | 0.1% | 00.0% | Unchanged | History |
| WEAVWeave Communications, Inc. | Stock | 70,489 | $535.0K | 0.1% | +24,946+54.8% | Added | History |
| SBUXStarbucks Corp | Stock | 5,502 | $463.3K | 0.1% | −136−2.4% | Reduced | History |
| HIMXHimax Technologies, Inc. | SPONSORED ADR | 53,946 | $441.8K | 0.1% | −542−1.0% | Reduced | History |
| VIAVViavi Solutions Inc. | COM | 23,992 | $427.5K | 0.1% | 00.0% | Unchanged | History |
| APPSDigital Turbine, Inc. | COM NEW | 81,839 | $409.2K | 0.1% | 00.0% | Unchanged | History |
| Ces Energy Solutions Corp15713J104 | COM | 45,700 | $409.1K | 0.1% | −375−0.8% | Reduced | – |
| MRKMerck & Co., Inc. | Stock | 3,867 | $407.0K | 0.1% | −171−4.2% | Reduced | History |
| PYPLPayPal Holdings, Inc. | Stock | 6,596 | $385.1K | 0.1% | +15+0.2% | Added | History |
| LTHLife Time Group Holdings, Inc. | COMMON STOCK | 13,538 | $359.8K | 0.1% | 00.0% | Unchanged | History |
| ONTOOnto Innovation Inc. | COM | 2,242 | $353.9K | 0.1% | 00.0% | Unchanged | History |
| CGNXCognex Corp | COM | 9,772 | $351.6K | 0.1% | 00.0% | Unchanged | History |
| ETSYEtsy Inc | COM | 5,692 | $315.6K | 0.1% | +722+14.5% | Added | History |
| CVLTCommvault Systems Inc | COM | 2,453 | $307.5K | 0.1% | +35+1.4% | Added | History |
| MUMicron Technology Inc | Stock | 1,077 | $307.4K | 0.1% | −1,861−63.3% | Reduced | History |
| RNTXRein Therapeutics, Inc. | COM NEW | 240,220 | $278.7K | 0.1% | +11,528+5.0% | Added | History |
| ATNMActinium Pharmaceuticals, Inc. | COM | 201,807 | $274.5K | 0.1% | −24,450−10.8% | Reduced | History |
| RMBSRambus Inc | COM | 2,711 | $249.1K | 0.1% | 00.0% | Unchanged | History |
| MSFTMicrosoft Corp | Stock | 508 | $245.7K | 0.1% | +2+0.4% | Added | History |
| RNGRingCentral, Inc. | CL A | 8,149 | $235.3K | <0.1% | +27+0.3% | Added | History |
| BXBlackstone Inc. | COM | 1,475 | $227.4K | <0.1% | +1,475 | New | History |
| AKAMAkamai Technologies Inc | COM | 2,520 | $219.9K | <0.1% | +2,520 | New | History |
| PETSPetmed Express Inc | COM | 42,328 | $135.4K | <0.1% | +18,487+77.5% | Added | History |
| SVVSavers Value Village, Inc. | COM | 13,764 | $128.6K | <0.1% | 00.0% | Unchanged | History |
| GDRXGoodRx Holdings, Inc. | COM CL A | 44,118 | $119.6K | <0.1% | +55+0.1% | Added | History |
| RDHLRedHill Biopharma Ltd. | SPONSORED ADR | 86,102 | $88.7K | <0.1% | +68,280+383.1% | Added | History |
Sold out since Q3 2025 (2)
Positions held at the end of Q3 2025 that are gone from this filing.