Gagnon Securities LLC
In its 13F for Q1 2025 (holdings as of March 31, 2025, filed May 9, 2025), Gagnon Securities LLC reported 98 stock positions worth $454.5 million. Its top holding was Sumisho Air Lease (AL) at 7.8% of the portfolio, followed by Ensign (ENSG, 6.2%) and Intuitive Surgical (ISRG, 6.2%). Compared with Q4 2024, it opened 8 new positions, sold out of 1, added to 47 and reduced 40. The biggest buy was a new position in Orasure Technologies (OSUR) and the biggest sale Power Solutions Internationa (PSIX, shares −38%).
- Most Recent 13F
- Q2 2026
- Location
- New York, NY
- CIK
- 0001125725
- Portfolio Value
- $454.5M (Q1 2025)
- SEC Filing
- 0001019056-25-000173 ↗ filed May 9, 2025
Holdings Value
Holdings 98 stocks · $454.5M
| AL Sumisho Air Lease Corp. filed as AIR LEASE CORP | 7.77% | 731,083 | $35.3M | Reduce -0.5% |
| ENSG The Ensign Group Inc. | 6.24% | 219,128 | $28.4M | Reduce -0.7% |
| ISRG Intuitive Surgical Inc. | 6.18% | 56,705 | $28.1M | Reduce -4.2% |
| CDNA Caredx Inc. | 5.55% | 1,421,689 | $25.2M | Reduce -0.7% |
| WGS Genedx Holdings Corp. | 5.55% | 284,911 | $25.2M | Reduce -20.7% |
| EPD Enterprise Products Partners | 3.66% | 487,877 | $16.7M | Reduce -2.1% |
| TMCI Treace Medical Concepts Inc. | 3.22% | 1,746,536 | $14.7M | Reduce -1.2% |
| PSIX Power Solutions Internationa | 2.92% | 525,291 | $13.3M | Reduce -38.2% |
| CAKE The Cheesecake Factory Inc. | 2.75% | 257,328 | $12.5M | Add +18.0% |
| FRSH Freshworks Inc. Class A | 2.72% | 876,889 | $12.4M | Add +7.5% |
| BLFS Biolife Solutions Inc. | 2.72% | 540,952 | $12.4M | Reduce -4.6% |
| KMX Carmax Inc. | 2.70% | 157,350 | $12.3M | Reduce -1.1% |
| BL Blackline Inc. | 2.67% | 250,738 | $12.1M | Add +27.1% |
| EXAS Exact Sciences Corp. | 2.58% | 270,664 | $11.7M | Add +9.9% |
| AMRC Ameresco Inc. Class A | 2.57% | 968,528 | $11.7M | Add +69.6% |
| NVGS Navigator Holdings Ltd. | 2.49% | 851,643 | $11.3M | Reduce -0.1% |
| EQIX Equinix Inc. | 2.44% | 13,590 | $11.1M | Add +5.8% |
| FIVN FIVE9 Inc. | 2.26% | 379,059 | $10.3M | Add +3.5% |
| PROF Profound Medical Corp. | 2.17% | 1,697,680 | $9.9M | Add +2.7% |
| CARG Cargurus Inc. | 2.09% | 326,436 | $9.5M | Reduce -21.3% |
| VERX Vertex Inc. Class A | 2.07% | 268,620 | $9.4M | Add +52.8% |
| GNRC Generac Holdings Inc. | 1.79% | 64,330 | $8.1M | Add +17.6% |
| PCRX Pacira Biosciences Inc. | 1.69% | 308,334 | $7.7M | Reduce -4.2% |
| ETWO E2OPEN Parent Holdings Inc. | 1.68% | 3,820,311 | $7.6M | Add +75.0% |
| VRN Veren Inc. | 1.64% | 1,124,330 | $7.4M | Add +3.5% |
| CMG Chipotle Mexican Grill Inc. | 1.61% | 145,824 | $7.3M | Reduce -1.6% |
| SAM Boston Beer Company Inc. Class A | 1.29% | 24,516 | $5.9M | Add +9.5% |
| AOSL Alpha & Omega Semiconductor | 1.17% | 214,761 | $5.3M | Add +0.3% |
| CTRE Caretrust REIT Inc. | 0.98% | 155,788 | $4.5M | Reduce -1.8% |
| ICUI Icu Medical Inc. | 0.98% | 32,039 | $4.4M | Add +10.9% |
| KLTR Kaltura Inc. | 0.90% | 2,173,086 | $4.1M | Reduce -2.0% |
| PNTG The Pennant Group Inc. | 0.84% | 152,104 | $3.8M | Reduce -3.0% |
| OSUR Orasure Technologies Inc. | 0.80% | 1,073,771 | $3.6M | New |
| NCNO Ncino Inc. | 0.75% | 124,823 | $3.4M | Add +0.1% |
| PRLB Proto Labs Inc. | 0.75% | 97,625 | $3.4M | Add +4.9% |
| QDEL Quidelortho Corp. | 0.70% | 91,134 | $3.2M | Add +0.1% |
| MXCT Maxcyte Inc. | 0.63% | 1,048,318 | $2.9M | Add +431.3% |
| IONQ Ionq Inc. | 0.54% | 111,348 | $2.5M | Add +1831.8% |
| WCPRF Whitecap Resources Inc. | 0.51% | 359,302 | $2.3M | New |
| NVDA Nvidia Corp. | 0.50% | 20,769 | $2.3M | Add +4.1% |
| TPR Tapestry Inc. | 0.41% | 26,587 | $1.9M | Reduce -43.5% |
| CNF Cnfinance Hldgs Ltd. | 0.36% | 2,103,222 | $1.6M | Add +24.5% |
| DVN Devon Energy Corp. | 0.34% | 41,822 | $1.6M | Add +36.8% |
| SLG SL Green Realty Corp. | 0.33% | 26,162 | $1.5M | Reduce -13.6% |
| GNTX Gentex Corp. | 0.29% | 57,122 | $1.3M | Reduce -1.1% |
| PTEN Patterson-Uti Energy Inc. | 0.29% | 160,690 | $1.3M | Add +0.6% |
| DV Doubleverify Holdings Inc. | 0.28% | 95,830 | $1.3M | Reduce -22.7% |
| NTDOY Nintendo Co. Ltd.-Unspons ADR | 0.28% | 73,307 | $1.3M | Reduce -2.9% |
| FLG Flagstar Bank NA | 0.27% | 104,727 | $1.2M | Add +2.4% |
| T AT&T Inc. | 0.25% | 39,488 | $1.1M | Add +0.3% |
| MCHP Microchip Technology Inc. | 0.24% | 22,798 | $1.1M | Add +20.9% |
| PFE Pfizer Inc. | 0.22% | 39,791 | $1.0M | Add +12.2% |
| XOM Exxon Mobil Corp. | 0.19% | 7,235 | $860K | Add +1.3% |
| GNL Global Net Lease Inc. | 0.19% | 105,552 | $849K | Add +0.5% |
| MRVL Marvell Technology Inc. | 0.15% | 11,049 | $680K | Reduce -21.3% |
| AKAM Akamai Technologies Inc. | 0.12% | 6,932 | $558K | Reduce -76.5% |
| CELC Celcuity Inc. | 0.12% | 54,310 | $549K | Add +3.5% |
| TECH Bio-Techne Corp. | 0.12% | 8,943 | $524K | Add +13.8% |
| SHOP Shopify Inc. Class A | 0.11% | 5,453 | $521K | Reduce -4.5% |
| META Meta Platforms Inc. Class A | 0.11% | 839 | $484K | Reduce -14.7% |
| SBUX Starbucks Corp. | 0.11% | 4,872 | $478K | Reduce -43.6% |
| WEAV Weave Communications Inc. | 0.10% | 41,992 | $466K | Add +27.5% |
| CVLT Commvault Systems Inc. | 0.10% | 2,932 | $463K | Add +0.9% |
| PYPL PayPal Holdings Inc. | 0.09% | 6,593 | $430K | Add +0.8% |
| GDRX Goodrx Holdings Inc. Class A | 0.09% | 93,143 | $411K | Add +33.3% |
| LTH Life Time Group Holdings Inc. | 0.09% | 13,599 | $411K | Reduce -29.3% |
| HIMX Himax Technologies Inc.-ADR | 0.09% | 54,580 | $401K | Add +0.4% |
| GOOGL Alphabet Inc. Class A | 0.09% | 2,556 | $395K | Reduce -2.1% |
| QSR Restaurant Brands Intern | 0.08% | 5,658 | $377K | New |
| ATNM Actinium Pharmaceuticals Inc. | 0.08% | 226,622 | $365K | New |
| MRK Merck & Co. Inc. | 0.08% | 4,040 | $363K | Reduce -0.8% |
| TTD Trade Desk Inc./the Class A filed as THE TRADE DESK INC | 0.08% | 6,599 | $361K | New |
| DRRX Durect Corporation | 0.07% | 403,884 | $324K | Add +0.5% |
| EOG EOG Resources Inc. | 0.07% | 2,423 | $311K | Reduce -6.6% |
| CGNX Cognex Corp. | 0.06% | 9,891 | $295K | Add +33.9% |
| GRSD Grandstand Ltd. filed as GAMBLING COM GROUP LIMITED | 0.06% | 22,772 | $287K | Add +1.2% |
| BX Blackstone Inc. | 0.06% | 1,973 | $276K | Reduce -1.9% |
| MU Micron Technology Inc. | 0.06% | 3,137 | $273K | No change |
| VIAV Viavi Solutions Inc. | 0.06% | 24,268 | $272K | Add +1.3% |
| BLZE Backblaze Inc. Class A | 0.06% | 55,773 | $269K | Add +0.6% |
| APPS Digital Turbine Inc. | 0.06% | 97,375 | $264K | Reduce -6.5% |
| MSFT Microsoft Corp. | 0.06% | 704 | $264K | Add +3.5% |
| CESDF Ces Energy Solutions Corp. | 0.05% | 46,180 | $237K | No change |
| ETSY Etsy Inc. | 0.05% | 4,990 | $235K | Reduce -3.1% |
| WBA Walgreens Boots Alliance Inc. | 0.05% | 20,184 | $225K | Reduce -0.8% |
| RNG Ringcentral Inc. Class A | 0.04% | 8,155 | $202K | Add +5.9% |
| MBLY Mobileye Global Inc. Class A | 0.04% | 13,892 | $200K | Reduce -13.9% |
| ONTO Onto Innovation Inc. | 0.04% | 1,547 | $188K | Add +6.2% |
| WBD Warner Bros Discovery Inc. | 0.03% | 14,576 | $156K | Reduce -22.1% |
| SHOO Steven Madden Ltd. filed as MADDEN STEVEN LTD | 0.03% | 5,243 | $140K | New |
| WFC Wells Fargo & Co. | 0.03% | 1,925 | $138K | Reduce -37.0% |
| VCEL Vericel Corp. | 0.03% | 3,062 | $137K | New |
| RNTX Rein Therapeutics Inc. | 0.03% | 71,745 | $127K | No change |
| GAP The Gap Inc. | 0.03% | 5,668 | $117K | New |
| PETS Petmed Express Inc. | 0.02% | 23,889 | $100K | Reduce -2.6% |
| YEXT Yext Inc. | 0.02% | 12,937 | $80K | Reduce -3.0% |
| DHX Dhi Group Inc. | 0.02% | 57,244 | $80K | Add +15.0% |
| LAB Standard Biotools Inc. | 0.01% | 24,677 | $27K | Add +3.1% |
Portfolio Sells Q4 2024 → Q1 2025
| PSIX Power Solutions Internationa | Reduce -38.2% | 2.92% | −2.17 |
| CARG Cargurus Inc. | Reduce -21.3% | 2.09% | −0.96 |
| CDNA Caredx Inc. | Reduce -0.7% | 5.55% | −0.62 |
| AKAM Akamai Technologies Inc. | Reduce -76.5% | 0.12% | −0.45 |
| SCWX Secureworks Corp. Class A | Sold out | 0.00% | −0.34 |
| BLFS Biolife Solutions Inc. | Reduce -4.6% | 2.72% | −0.25 |
| TPR Tapestry Inc. | Reduce -43.5% | 0.41% | −0.21 |
| DV Doubleverify Holdings Inc. | Reduce -22.7% | 0.28% | −0.20 |
| CMG Chipotle Mexican Grill Inc. | Reduce -1.6% | 1.61% | −0.19 |
| MRVL Marvell Technology Inc. | Reduce -21.3% | 0.15% | −0.16 |
| NVGS Navigator Holdings Ltd. | Reduce -0.1% | 2.49% | −0.14 |
| KLTR Kaltura Inc. | Reduce -2.0% | 0.90% | −0.08 |
| SLG SL Green Realty Corp. | Reduce -13.6% | 0.33% | −0.08 |
| SBUX Starbucks Corp. | Reduce -43.6% | 0.11% | −0.05 |
| ISRG Intuitive Surgical Inc. | Reduce -4.2% | 6.18% | −0.04 |
| GNTX Gentex Corp. | Reduce -1.1% | 0.29% | −0.04 |
| MBLY Mobileye Global Inc. Class A | Reduce -13.9% | 0.04% | −0.02 |
| WGS Genedx Holdings Corp. | Reduce -20.7% | 5.55% | −0.01 |
| WFC Wells Fargo & Co. | Reduce -37.0% | 0.03% | −0.01 |
| GOOGL Alphabet Inc. Class A | Reduce -2.1% | 0.09% | −0.01 |
| META Meta Platforms Inc. Class A | Reduce -14.7% | 0.11% | −0.01 |
| BX Blackstone Inc. | Reduce -1.9% | 0.06% | −0.01 |
| SHOP Shopify Inc. Class A | Reduce -4.5% | 0.11% | −0.01 |
| WBD Warner Bros Discovery Inc. | Reduce -22.1% | 0.03% | −0.01 |
| ETSY Etsy Inc. | Reduce -3.1% | 0.05% | −0.00 |
| MRK Merck & Co. Inc. | Reduce -0.8% | 0.08% | −0.00 |
| PETS Petmed Express Inc. | Reduce -2.6% | 0.02% | −0.00 |
| YEXT Yext Inc. | Reduce -3.0% | 0.02% | +0.00 |
| PNTG The Pennant Group Inc. | Reduce -3.0% | 0.84% | +0.00 |
| EOG EOG Resources Inc. | Reduce -6.6% | 0.07% | +0.00 |
| LTH Life Time Group Holdings Inc. | Reduce -29.3% | 0.09% | +0.00 |
| WBA Walgreens Boots Alliance Inc. | Reduce -0.8% | 0.05% | +0.01 |
| APPS Digital Turbine Inc. | Reduce -6.5% | 0.06% | +0.02 |
| NTDOY Nintendo Co. Ltd.-Unspons ADR | Reduce -2.9% | 0.28% | +0.05 |
| KMX Carmax Inc. | Reduce -1.1% | 2.70% | +0.08 |
| CTRE Caretrust REIT Inc. | Reduce -1.8% | 0.98% | +0.12 |
| ENSG The Ensign Group Inc. | Reduce -0.7% | 6.24% | +0.33 |
| PCRX Pacira Biosciences Inc. | Reduce -4.2% | 1.69% | +0.46 |
| EPD Enterprise Products Partners | Reduce -2.1% | 3.66% | +0.52 |
| TMCI Treace Medical Concepts Inc. | Reduce -1.2% | 3.22% | +0.57 |
| AL Sumisho Air Lease Corp. | Reduce -0.5% | 7.77% | +0.63 |
Portfolio Buys Q4 2024 → Q1 2025
| OSUR Orasure Technologies Inc. | New | 0.80% | +0.80 |
| CAKE The Cheesecake Factory Inc. | Add +18.0% | 2.75% | +0.67 |
| VRN Veren Inc. | Add +3.5% | 1.64% | +0.51 |
| ETWO E2OPEN Parent Holdings Inc. | Add +75.0% | 1.68% | +0.51 |
| WCPRF Whitecap Resources Inc. | New | 0.51% | +0.51 |
| IONQ Ionq Inc. | Add +1831.8% | 0.54% | +0.49 |
| MXCT Maxcyte Inc. | Add +431.3% | 0.63% | +0.46 |
| BL Blackline Inc. | Add +27.1% | 2.67% | +0.26 |
| VERX Vertex Inc. Class A | Add +52.8% | 2.07% | +0.18 |
| DVN Devon Energy Corp. | Add +36.8% | 0.34% | +0.14 |
| GNRC Generac Holdings Inc. | Add +17.6% | 1.79% | +0.08 |
| QSR Restaurant Brands Intern | New | 0.08% | +0.08 |
| ATNM Actinium Pharmaceuticals Inc. | New | 0.08% | +0.08 |
| TTD Trade Desk Inc./the Class A | New | 0.08% | +0.08 |
| ICUI Icu Medical Inc. | Add +10.9% | 0.98% | +0.08 |
| FLG Flagstar Bank NA | Add +2.4% | 0.27% | +0.08 |
| T AT&T Inc. | Add +0.3% | 0.25% | +0.07 |
| FRSH Freshworks Inc. Class A | Add +7.5% | 2.72% | +0.06 |
| CNF Cnfinance Hldgs Ltd. | Add +24.5% | 0.36% | +0.04 |
| XOM Exxon Mobil Corp. | Add +1.3% | 0.19% | +0.03 |
| GNL Global Net Lease Inc. | Add +0.5% | 0.19% | +0.03 |
| PFE Pfizer Inc. | Add +12.2% | 0.22% | +0.03 |
| SHOO Steven Madden Ltd. | New | 0.03% | +0.03 |
| VCEL Vericel Corp. | New | 0.03% | +0.03 |
| GAP The Gap Inc. | New | 0.03% | +0.03 |
| GDRX Goodrx Holdings Inc. Class A | Add +33.3% | 0.09% | +0.02 |
| MCHP Microchip Technology Inc. | Add +20.9% | 0.24% | +0.02 |
| PTEN Patterson-Uti Energy Inc. | Add +0.6% | 0.29% | +0.02 |
| PRLB Proto Labs Inc. | Add +4.9% | 0.75% | +0.02 |
| CVLT Commvault Systems Inc. | Add +0.9% | 0.10% | +0.01 |
| CGNX Cognex Corp. | Add +33.9% | 0.06% | +0.01 |
| VIAV Viavi Solutions Inc. | Add +1.3% | 0.06% | +0.01 |
| DRRX Durect Corporation | Add +0.5% | 0.07% | +0.01 |
| TECH Bio-Techne Corp. | Add +13.8% | 0.12% | +0.00 |
| MSFT Microsoft Corp. | Add +3.5% | 0.06% | +0.00 |
| HIMX Himax Technologies Inc.-ADR | Add +0.4% | 0.09% | +0.00 |
| DHX Dhi Group Inc. | Add +15.0% | 0.02% | −0.00 |
| GRSD Grandstand Ltd. | Add +1.2% | 0.06% | −0.00 |
| EQIX Equinix Inc. | Add +5.8% | 2.44% | −0.00 |
| LAB Standard Biotools Inc. | Add +3.1% | 0.01% | −0.00 |
| WEAV Weave Communications Inc. | Add +27.5% | 0.10% | −0.00 |
| ONTO Onto Innovation Inc. | Add +6.2% | 0.04% | −0.01 |
| BLZE Backblaze Inc. Class A | Add +0.6% | 0.06% | −0.01 |
| RNG Ringcentral Inc. Class A | Add +5.9% | 0.04% | −0.01 |
| CELC Celcuity Inc. | Add +3.5% | 0.12% | −0.02 |
| PYPL PayPal Holdings Inc. | Add +0.8% | 0.09% | −0.02 |
| NVDA Nvidia Corp. | Add +4.1% | 0.50% | −0.04 |
| SAM Boston Beer Company Inc. Class A | Add +9.5% | 1.29% | −0.06 |
| NCNO Ncino Inc. | Add +0.1% | 0.75% | −0.09 |
| QDEL Quidelortho Corp. | Add +0.1% | 0.70% | −0.12 |
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 83 | $518.8M | CDNA, WGS, ENSG, AMRC, GNRC |
| Q1 2026 | 85 | $433.2M | ENSG, CDNA, AMRC, WGS, EPD |
| Q4 2025 | 86 | $487.0M | CDNA, WGS, AL, ENSG, AMRC |
| Q3 2025 | 86 | $498.5M | AL, ENSG, WGS, AMRC, CDNA |
| Q2 2025 | 87 | $492.4M | AL, ENSG, CDNA, ISRG, WGS |
| Q1 2025 | 98 | $454.5M | AL, ENSG, ISRG, CDNA, WGS |
| Q4 2024 | 91 | $496.3M | AL, ISRG, CDNA, ENSG, WGS |
| Q3 2024 | 102 | $504.4M | CDNA, ENSG, AL, ISRG, WGS |
| Q2 2024 | 97 | $444.0M | AL, CDNA, ENSG, ISRG, PCRX |
| Q1 2024 | 97 | $422.5M | AL, ENSG, CDNA, ISRG, PCRX |