Gagnon Securities LLC
- SEC CIK
- 0001125725
- Latest filing
- Aug 4, 2026
Holdings in Q1 2021
Holdings as of Mar 31, 2021, filed May 14, 2021. Long positions only.
- Positions
- 108
- No 13F data for Q4 2020
- Portfolio value
- $656.7M
- No 13F data for Q4 2020
Livermore's 13F data starts with Q1 2021, so this quarter has no previous quarter to compare with and changes are not shown.
| Security | Class | Shares | Value | % of portfolio | Share change | Action | History |
|---|---|---|---|---|---|---|---|
| CDNACareDx, Inc. | COM | 819,265 | $55.8M | 8.5% | – | – | History |
| ALSumisho Air Lease Corp | CL A | 888,505 | $43.5M | 6.6% | – | – | History |
| ENSGEnsign Group, Inc | COM | 403,756 | $37.9M | 5.8% | – | – | History |
| PCRXPacira BioSciences, Inc. | COM | 454,849 | $31.9M | 4.9% | – | – | History |
| General Fin Corp Del369822101 | COM | 2,261,797 | $27.5M | 4.2% | – | – | – |
| AMRCAmeresco, Inc. | CL A | 542,476 | $26.4M | 4.0% | – | – | History |
| AOSLAlpha & Omega Semiconductor Ltd | SHS | 756,307 | $24.7M | 3.8% | – | – | History |
| LLLL Flooring Holdings, Inc. | COM | 799,693 | $20.1M | 3.1% | – | – | History |
| FIVNFive9, Inc. | COM | 128,288 | $20.1M | 3.1% | – | – | History |
| BLBlackline, Inc. | COM | 181,236 | $19.6M | 3.0% | – | – | History |
| ISRGIntuitive Surgical Inc | COM NEW | 23,354 | $17.3M | 2.6% | – | – | History |
| KMXCarMax Inc | COM | 123,200 | $16.3M | 2.5% | – | – | History |
| NVGSNavigator Holdings Ltd. | SHS | 1,768,459 | $15.7M | 2.4% | – | – | History |
| PROFProfound Medical Corp. | COM NEW | 777,890 | $15.7M | 2.4% | – | – | History |
| EVBGEverbridge, Inc. | COM | 129,208 | $15.7M | 2.4% | – | – | History |
| BLFSBiolife Solutions Inc | COM NEW | 395,880 | $14.3M | 2.2% | – | – | History |
| EPDEnterprise Products Partners L.P. | Stock | 627,628 | $13.8M | 2.1% | – | – | History |
| NEWRNew Relic, Inc. | COM | 214,457 | $13.2M | 2.0% | – | – | History |
| ONTOOnto Innovation Inc. | COM | 197,640 | $13.0M | 2.0% | – | – | History |
| IRBTiRobot Corp | COM | 103,683 | $12.7M | 1.9% | – | – | History |
| EQIXEquinix Inc | COM | 16,856 | $11.5M | 1.7% | – | – | History |
| CM Life Sciences Inc18978W208 | UNIT 09/01/2025 | 656,336 | $10.8M | 1.6% | – | – | – |
| YEXTYext, Inc. | COM | 720,665 | $10.4M | 1.6% | – | – | History |
| CM Life Sciences II Inc125842203 | UNIT 02/25/2028 | 762,450 | $9.76M | 1.5% | – | – | – |
| PNTGPennant Group, Inc. | COM | 192,118 | $8.80M | 1.3% | – | – | History |
| ETWOE2open Parent Holdings, Inc. | COM CL A | 878,576 | $8.75M | 1.3% | – | – | History |
| APENApollo Endosurgery, Inc. | COM | 1,566,794 | $8.63M | 1.3% | – | – | History |
| PSIXPower Solutions International, Inc. | Stock | 1,166,366 | $8.57M | 1.3% | – | – | History |
| PRLBProto Labs Inc | COM | 58,485 | $7.12M | 1.1% | – | – | History |
| CMGChipotle Mexican Grill Inc | COM | 4,789 | $6.80M | 1.0% | – | – | History |
| SCWXSecureWorks Corp | CL A | 476,749 | $6.38M | 1.0% | – | – | History |
| CSLTCastlight Health, Inc. | CL B | 4,132,008 | $6.24M | 1.0% | – | – | History |
| CELCCelcuity Inc. | COM | 414,292 | $5.94M | 0.9% | – | – | History |
| DVNDevon Energy Corp | Stock | 258,247 | $5.64M | 0.9% | – | – | History |
| CNFCNFinance Holdings Ltd. | SPON ADS | 1,393,884 | $5.38M | 0.8% | – | – | History |
| TLNDTalend S.A. | ADS | 83,125 | $5.29M | 0.8% | – | – | History |
| TFFPTFF Pharmaceuticals, Inc. | COM | 377,976 | $5.13M | 0.8% | – | – | History |
| CTRECareTrust REIT, Inc. | COM | 217,493 | $5.06M | 0.8% | – | – | History |
| ZUOZuora Inc | COM CL A | 291,420 | $4.31M | 0.7% | – | – | History |
| AKAMAkamai Technologies Inc | COM | 31,834 | $3.24M | 0.5% | – | – | History |
| QUMUQumu Corp | COM | 469,773 | $3.18M | 0.5% | – | – | History |
| General Finance Corp369822507 | PFD | 28,637 | $2.99M | 0.5% | – | – | – |
| Air Lease Corp00912X500 | PFD | 110,603 | $2.90M | 0.4% | – | – | – |
| DRRXDurect Corp | COM | 1,343,805 | $2.66M | 0.4% | – | – | History |
| RDHLRedHill Biopharma Ltd. | SPONSORED ADS | 331,837 | $2.43M | 0.4% | – | – | History |
| TAT&T Inc. | Stock | 77,139 | $2.33M | 0.4% | – | – | History |
| TLMDSOC Telemed, Inc. | COM CL A | 352,773 | $2.22M | 0.3% | – | – | History |
| GNRCGenerac Holdings Inc. | Stock | 6,771 | $2.22M | 0.3% | – | – | History |
| QDELQuidelOrtho Corp | COM | 16,420 | $2.10M | 0.3% | – | – | History |
| SLGSL Green Realty Corp | COM | 27,556 | $1.93M | 0.3% | – | – | History |
| FLXNFlexion Therapeutics Inc | COM | 207,347 | $1.86M | 0.3% | – | – | History |
| TPRTapestry, Inc. | COM | 43,400 | $1.79M | 0.3% | – | – | History |
| XOMExxonMobil Holdings Corp | COM | 31,270 | $1.75M | 0.3% | – | – | History |
| CAKECheesecake Factory Inc | COM | 27,994 | $1.64M | 0.2% | – | – | History |
| GNTXGentex Corp | COM | 44,680 | $1.59M | 0.2% | – | – | History |
| MCHPMicrochip Technology Inc | Stock | 10,240 | $1.59M | 0.2% | – | – | History |
| PFEPfizer Inc | Stock | 34,182 | $1.24M | 0.2% | – | – | History |
| Nintendo Ltd ADR654445303 | ADR | 14,307 | $1.00M | 0.2% | – | – | – |
| TTOOT2 Biosystems, Inc. | COM | 594,431 | $963.0K | 0.1% | – | – | History |
| NEXNextier Oilfield Solutions Inc. | COM | 241,386 | $898.0K | 0.1% | – | – | History |
| MRVLMarvell Technology, Inc. | COM | 14,647 | $717.0K | 0.1% | – | – | History |
| WLYJohn Wiley & Sons, Inc. | CL A | 12,992 | $704.0K | 0.1% | – | – | History |
| PLTRPalantir Technologies Inc. | Stock | 30,166 | $703.0K | 0.1% | – | – | History |
| BFLYButterfly Network, Inc. | COM CL A | 41,630 | $701.0K | 0.1% | – | – | History |
| Ocado Group PLCG6718L106 | COM | 24,936 | $700.0K | 0.1% | – | – | – |
| APTOAptose Biosciences Inc. | COM NEW | 109,611 | $655.0K | 0.1% | – | – | History |
| Uranium Participation Corporat917017105 | COM | 139,508 | $605.0K | 0.1% | – | – | – |
| WBAWalgreens Boots Alliance, Inc. | COM | 11,006 | $604.0K | 0.1% | – | – | History |
| EHTHeHealth, Inc. | COM | 8,279 | $602.0K | 0.1% | – | – | History |
| EOGEOG Resources Inc | Stock | 8,160 | $592.0K | 0.1% | – | – | History |
| PYPLPayPal Holdings, Inc. | Stock | 2,433 | $591.0K | 0.1% | – | – | History |
| WFCWells Fargo & Company | Stock | 13,056 | $510.0K | 0.1% | – | – | History |
| Blue Prism Group PLCG1193C101 | COM NEW | 27,963 | $490.0K | 0.1% | – | – | – |
| Sysmex CorpJ7864H102 | COM | 4,524 | $488.0K | 0.1% | – | – | – |
| VTRSViatris Inc | Stock | 34,798 | $486.0K | 0.1% | – | – | History |
| NVDANVIDIA Corp | Stock | 888 | $474.0K | 0.1% | – | – | History |
| CHGGChegg, Inc | COM | 5,394 | $462.0K | 0.1% | – | – | History |
| URGUr-Energy Inc | COM | 399,105 | $439.0K | 0.1% | – | – | History |
| ETSYEtsy Inc | COM | 2,121 | $428.0K | 0.1% | – | – | History |
| Exchange Traded Concepts Tr301505715 | NORTH SHOR GBL | 7,595 | $421.0K | 0.1% | – | – | – |
| MUMicron Technology Inc | Stock | 4,567 | $403.0K | 0.1% | – | – | History |
| GDRXGoodRx Holdings, Inc. | COM CL A | 10,304 | $402.0K | 0.1% | – | – | History |
| ETEnergy Transfer LP | COM UT LTD PTN | 47,448 | $364.0K | 0.1% | – | – | History |
| MRKMerck & Co., Inc. | Stock | 4,607 | $355.0K | 0.1% | – | – | History |
| DNNDenison Mines Corp. | COM | 324,831 | $354.0K | 0.1% | – | – | History |
| Rada Electr Inds LtdM81863124 | COM PAR NEW | 28,565 | $343.0K | 0.1% | – | – | – |
| LPSNLiveperson Inc | COM | 6,491 | $342.0K | 0.1% | – | – | History |
| PETSPetmed Express Inc | COM | 9,536 | $335.0K | 0.1% | – | – | History |
| GOOGLAlphabet Inc. | Stock | 151 | $311.0K | <0.1% | – | – | History |
| METAMeta Platforms, Inc. | Stock | 1,057 | $311.0K | <0.1% | – | – | History |
| RESRPC Inc | COM | 57,340 | $310.0K | <0.1% | – | – | History |
| DMTKDermTech, Inc. | COM | 6,077 | $309.0K | <0.1% | – | – | History |
| CLBCore Laboratories Inc. | COM | 10,166 | $293.0K | <0.1% | – | – | History |
| NCSMNCS Multistage Holdings, Inc. | COM NEW | 9,387 | $260.0K | <0.1% | – | – | History |
| ZGNXZogenix, Inc. | COM NEW | 12,477 | $244.0K | <0.1% | – | – | History |
| HPHelmerich & Payne, Inc. | COM | 8,716 | $235.0K | <0.1% | – | – | History |
| ZENZendesk, Inc. | COM | 1,744 | $231.0K | <0.1% | – | – | History |
| RRCRange Resources Corp | COM | 20,631 | $213.0K | <0.1% | – | – | History |
| VIAVViavi Solutions Inc. | COM | 13,435 | $211.0K | <0.1% | – | – | History |
| RBLXRoblox Corp | Stock | 3,232 | $210.0K | <0.1% | – | – | History |