Gagnon Securities LLC
In its 13F for Q2 2025 (holdings as of June 30, 2025, filed July 23, 2025), Gagnon Securities LLC reported 87 stock positions worth $492.4 million. Its top holding was Sumisho Air Lease (AL) at 8.7% of the portfolio, followed by Ensign (ENSG, 6.5%) and Caredx (CDNA, 6.1%). Compared with Q1 2025, it opened 1 new position, sold out of 12, added to 34 and reduced 35. The biggest buy was a new position in Aspen Aerogels (ASPN) and the biggest sale an exit from E2OPEN Parent (ETWO).
- Most Recent 13F
- Q2 2026
- Location
- New York, NY
- CIK
- 0001125725
- Portfolio Value
- $492.4M (Q2 2025)
- SEC Filing
- 0001019056-25-000196 ↗ filed Jul 23, 2025
Holdings Value
Holdings 87 stocks · $492.4M
| AL Sumisho Air Lease Corp. filed as AIR LEASE CORP | 8.75% | 736,437 | $43.1M | Add +0.7% |
| ENSG The Ensign Group Inc. | 6.55% | 208,994 | $32.2M | Reduce -4.6% |
| CDNA Caredx Inc. | 6.15% | 1,548,912 | $30.3M | Add +8.9% |
| ISRG Intuitive Surgical Inc. | 5.94% | 53,824 | $29.2M | Reduce -5.1% |
| WGS Genedx Holdings Corp. | 5.09% | 271,233 | $25.0M | Reduce -4.8% |
| PSIX Power Solutions Internationa | 4.49% | 341,611 | $22.1M | Reduce -35.0% |
| CAKE The Cheesecake Factory Inc. | 3.26% | 256,354 | $16.1M | Reduce -0.4% |
| EPD Enterprise Products Partners | 3.07% | 487,590 | $15.1M | Reduce -0.1% |
| EXAS Exact Sciences Corp. | 3.01% | 278,789 | $14.8M | Add +3.0% |
| BL Blackline Inc. | 2.90% | 252,241 | $14.3M | Add +0.6% |
| EQIX Equinix Inc. | 2.81% | 17,392 | $13.8M | Add +28.0% |
| FRSH Freshworks Inc. Class A | 2.80% | 924,590 | $13.8M | Add +5.4% |
| TMCI Treace Medical Concepts Inc. | 2.69% | 2,250,148 | $13.2M | Add +28.8% |
| AMRC Ameresco Inc. Class A | 2.68% | 870,245 | $13.2M | Reduce -10.2% |
| NVGS Navigator Holdings Ltd. | 2.50% | 871,008 | $12.3M | Add +2.3% |
| BLFS Biolife Solutions Inc. | 2.36% | 539,896 | $11.6M | Reduce -0.2% |
| ASPN Aspen Aerogels Inc. | 2.28% | 1,899,108 | $11.2M | New |
| KMX Carmax Inc. | 2.23% | 163,417 | $11.0M | Add +3.9% |
| CARG Cargurus Inc. | 2.21% | 324,921 | $10.9M | Reduce -0.5% |
| FIVN FIVE9 Inc. | 2.19% | 407,452 | $10.8M | Add +7.5% |
| PROF Profound Medical Corp. | 2.10% | 1,749,913 | $10.3M | Add +3.1% |
| GNRC Generac Holdings Inc. | 1.98% | 68,189 | $9.8M | Add +6.0% |
| VERX Vertex Inc. Class A | 1.94% | 269,846 | $9.5M | Add +0.5% |
| PCRX Pacira Biosciences Inc. | 1.79% | 368,353 | $8.8M | Add +19.5% |
| CMG Chipotle Mexican Grill Inc. | 1.67% | 146,548 | $8.2M | Add +0.5% |
| AOSL Alpha & Omega Semiconductor | 1.13% | 215,980 | $5.5M | Add +0.6% |
| DV Doubleverify Holdings Inc. | 1.11% | 365,000 | $5.5M | Add +280.9% |
| OSUR Orasure Technologies Inc. | 0.98% | 1,604,142 | $4.8M | Add +49.4% |
| SAM Boston Beer Company Inc. Class A | 0.97% | 25,051 | $4.8M | Add +2.2% |
| CTRE Caretrust REIT Inc. | 0.94% | 150,548 | $4.6M | Reduce -3.4% |
| PRLB Proto Labs Inc. | 0.93% | 114,574 | $4.6M | Add +17.4% |
| PNTG The Pennant Group Inc. | 0.92% | 151,488 | $4.5M | Reduce -0.4% |
| KLTR Kaltura Inc. | 0.89% | 2,176,378 | $4.4M | Add +0.1% |
| ICUI Icu Medical Inc. | 0.87% | 32,315 | $4.3M | Add +0.9% |
| NVDA Nvidia Corp. | 0.67% | 20,864 | $3.3M | Add +0.5% |
| WCPRF Whitecap Resources Inc. | 0.66% | 487,779 | $3.3M | Add +35.8% |
| QDEL Quidelortho Corp. | 0.43% | 72,877 | $2.1M | Reduce -20.0% |
| TPR Tapestry Inc. | 0.42% | 23,420 | $2.1M | Reduce -11.9% |
| MCHP Microchip Technology Inc. | 0.39% | 27,436 | $1.9M | Add +20.3% |
| NTDOY Nintendo Co. Ltd.-Unspons ADR | 0.35% | 71,863 | $1.7M | Reduce -2.0% |
| SLG SL Green Realty Corp. | 0.33% | 26,162 | $1.6M | No change |
| CNF Cnfinance Hldgs Ltd. | 0.26% | 1,936,390 | $1.3M | Reduce -7.9% |
| FLG Flagstar Bank NA | 0.25% | 117,875 | $1.2M | Add +12.6% |
| GNTX Gentex Corp. | 0.25% | 56,450 | $1.2M | Reduce -1.2% |
| PTEN Patterson-Uti Energy Inc. | 0.25% | 204,395 | $1.2M | Add +27.2% |
| PFE Pfizer Inc. | 0.21% | 43,223 | $1.0M | Add +8.6% |
| NCNO Ncino Inc. | 0.21% | 36,732 | $1.0M | Reduce -70.6% |
| T AT&T Inc. | 0.17% | 28,355 | $821K | Reduce -28.2% |
| GNL Global Net Lease Inc. | 0.16% | 105,552 | $797K | No change |
| XOM Exxon Mobil Corp. | 0.16% | 7,235 | $780K | No change |
| CELC Celcuity Inc. | 0.15% | 53,990 | $721K | Reduce -0.6% |
| SHOP Shopify Inc. Class A | 0.13% | 5,708 | $658K | Add +4.7% |
| DVN Devon Energy Corp. | 0.13% | 20,311 | $646K | Reduce -51.4% |
| META Meta Platforms Inc. Class A | 0.13% | 839 | $619K | No change |
| SBUX Starbucks Corp. | 0.10% | 5,642 | $517K | Add +15.8% |
| CVLT Commvault Systems Inc. | 0.10% | 2,879 | $502K | Reduce -1.8% |
| HIMX Himax Technologies Inc.-ADR | 0.10% | 54,580 | $487K | No change |
| PYPL PayPal Holdings Inc. | 0.10% | 6,517 | $484K | Reduce -1.1% |
| APPS Digital Turbine Inc. | 0.10% | 81,839 | $483K | Reduce -15.9% |
| TECH Bio-Techne Corp. | 0.10% | 9,270 | $477K | Add +3.7% |
| MRVL Marvell Technology Inc. | 0.10% | 6,096 | $472K | Reduce -44.8% |
| TTD Trade Desk Inc./the Class A filed as THE TRADE DESK INC | 0.10% | 6,512 | $469K | Reduce -1.3% |
| GOOGL Alphabet Inc. Class A | 0.09% | 2,556 | $450K | No change |
| SHOO Steven Madden Ltd. filed as MADDEN STEVEN LTD | 0.09% | 17,583 | $422K | Add +235.4% |
| LTH Life Time Group Holdings Inc. | 0.08% | 13,599 | $412K | No change |
| WEAV Weave Communications Inc. | 0.08% | 45,214 | $376K | Add +7.7% |
| MU Micron Technology Inc. | 0.08% | 3,003 | $370K | Reduce -4.3% |
| MSFT Microsoft Corp. | 0.07% | 692 | $344K | Reduce -1.7% |
| MRK Merck & Co. Inc. | 0.07% | 4,040 | $320K | No change |
| ATNM Actinium Pharmaceuticals Inc. | 0.06% | 226,622 | $317K | No change |
| CGNX Cognex Corp. | 0.06% | 9,724 | $308K | Reduce -1.7% |
| BLZE Backblaze Inc. Class A | 0.06% | 55,129 | $303K | Reduce -1.1% |
| GRSD Grandstand Ltd. filed as GAMBLING COM GROUP LIMITED | 0.05% | 22,442 | $267K | Reduce -1.4% |
| DRRX Durect Corporation | 0.05% | 403,884 | $257K | No change |
| ETSY Etsy Inc. | 0.05% | 4,990 | $250K | No change |
| MBLY Mobileye Global Inc. Class A | 0.05% | 13,892 | $250K | No change |
| VIAV Viavi Solutions Inc. | 0.05% | 23,851 | $240K | Reduce -1.7% |
| WBA Walgreens Boots Alliance Inc. | 0.05% | 20,184 | $232K | No change |
| RNG Ringcentral Inc. Class A | 0.05% | 8,011 | $227K | Reduce -1.8% |
| CESDF Ces Energy Solutions Corp. | 0.05% | 46,180 | $224K | No change |
| GDRX Goodrx Holdings Inc. Class A | 0.04% | 43,750 | $218K | Reduce -53.0% |
| AKAM Akamai Technologies Inc. | 0.04% | 2,535 | $202K | Reduce -63.4% |
| DHX Dhi Group Inc. | 0.03% | 56,401 | $168K | Reduce -1.5% |
| WBD Warner Bros Discovery Inc. | 0.03% | 14,576 | $167K | No change |
| YEXT Yext Inc. | 0.02% | 12,944 | $110K | Add +0.1% |
| RNTX Rein Therapeutics Inc. | 0.02% | 71,745 | $100K | No change |
| PETS Petmed Express Inc. | 0.02% | 23,889 | $79K | No change |
Portfolio Sells Q1 2025 → Q2 2025
| ETWO E2OPEN Parent Holdings Inc. | Sold out | 0.00% | −1.68 |
| VRN Veren Inc. | Sold out | 0.00% | −1.64 |
| MXCT Maxcyte Inc. | Sold out | 0.00% | −0.63 |
| EPD Enterprise Products Partners | Reduce -0.1% | 3.07% | −0.59 |
| NCNO Ncino Inc. | Reduce -70.6% | 0.21% | −0.55 |
| IONQ Ionq Inc. | Sold out | 0.00% | −0.54 |
| WGS Genedx Holdings Corp. | Reduce -4.8% | 5.09% | −0.47 |
| BLFS Biolife Solutions Inc. | Reduce -0.2% | 2.36% | −0.36 |
| QDEL Quidelortho Corp. | Reduce -20.0% | 0.43% | −0.27 |
| ISRG Intuitive Surgical Inc. | Reduce -5.1% | 5.94% | −0.24 |
| DVN Devon Energy Corp. | Reduce -51.4% | 0.13% | −0.21 |
| CNF Cnfinance Hldgs Ltd. | Reduce -7.9% | 0.26% | −0.11 |
| QSR Restaurant Brands Intern | Sold out | 0.00% | −0.08 |
| AKAM Akamai Technologies Inc. | Reduce -63.4% | 0.04% | −0.08 |
| T AT&T Inc. | Reduce -28.2% | 0.17% | −0.08 |
| EOG EOG Resources Inc. | Sold out | 0.00% | −0.07 |
| BX Blackstone Inc. | Sold out | 0.00% | −0.06 |
| MRVL Marvell Technology Inc. | Reduce -44.8% | 0.10% | −0.05 |
| GDRX Goodrx Holdings Inc. Class A | Reduce -53.0% | 0.04% | −0.05 |
| CTRE Caretrust REIT Inc. | Reduce -3.4% | 0.94% | −0.04 |
| ONTO Onto Innovation Inc. | Sold out | 0.00% | −0.04 |
| GNTX Gentex Corp. | Reduce -1.2% | 0.25% | −0.04 |
| WFC Wells Fargo & Co. | Sold out | 0.00% | −0.03 |
| VCEL Vericel Corp. | Sold out | 0.00% | −0.03 |
| GAP The Gap Inc. | Sold out | 0.00% | −0.03 |
| VIAV Viavi Solutions Inc. | Reduce -1.7% | 0.05% | −0.01 |
| GRSD Grandstand Ltd. | Reduce -1.4% | 0.05% | −0.01 |
| LAB Standard Biotools Inc. | Sold out | 0.00% | −0.01 |
| CGNX Cognex Corp. | Reduce -1.7% | 0.06% | −0.00 |
| CVLT Commvault Systems Inc. | Reduce -1.8% | 0.10% | +0.00 |
| RNG Ringcentral Inc. Class A | Reduce -1.8% | 0.05% | +0.00 |
| BLZE Backblaze Inc. Class A | Reduce -1.1% | 0.06% | +0.00 |
| PYPL PayPal Holdings Inc. | Reduce -1.1% | 0.10% | +0.00 |
| TPR Tapestry Inc. | Reduce -11.9% | 0.42% | +0.01 |
| MSFT Microsoft Corp. | Reduce -1.7% | 0.07% | +0.01 |
| MU Micron Technology Inc. | Reduce -4.3% | 0.08% | +0.02 |
| TTD Trade Desk Inc./the Class A | Reduce -1.3% | 0.10% | +0.02 |
| DHX Dhi Group Inc. | Reduce -1.5% | 0.03% | +0.02 |
| CELC Celcuity Inc. | Reduce -0.6% | 0.15% | +0.03 |
| APPS Digital Turbine Inc. | Reduce -15.9% | 0.10% | +0.04 |
| NTDOY Nintendo Co. Ltd.-Unspons ADR | Reduce -2.0% | 0.35% | +0.07 |
| PNTG The Pennant Group Inc. | Reduce -0.4% | 0.92% | +0.08 |
| AMRC Ameresco Inc. Class A | Reduce -10.2% | 2.68% | +0.11 |
| CARG Cargurus Inc. | Reduce -0.5% | 2.21% | +0.12 |
| ENSG The Ensign Group Inc. | Reduce -4.6% | 6.55% | +0.31 |
| CAKE The Cheesecake Factory Inc. | Reduce -0.4% | 3.26% | +0.51 |
| PSIX Power Solutions Internationa | Reduce -35.0% | 4.49% | +1.57 |
Portfolio Buys Q1 2025 → Q2 2025
| ASPN Aspen Aerogels Inc. | New | 2.28% | +2.28 |
| AL Sumisho Air Lease Corp. | Add +0.7% | 8.75% | +0.98 |
| DV Doubleverify Holdings Inc. | Add +280.9% | 1.11% | +0.83 |
| CDNA Caredx Inc. | Add +8.9% | 6.15% | +0.60 |
| EXAS Exact Sciences Corp. | Add +3.0% | 3.01% | +0.43 |
| EQIX Equinix Inc. | Add +28.0% | 2.81% | +0.37 |
| BL Blackline Inc. | Add +0.6% | 2.90% | +0.23 |
| GNRC Generac Holdings Inc. | Add +6.0% | 1.98% | +0.19 |
| OSUR Orasure Technologies Inc. | Add +49.4% | 0.98% | +0.18 |
| PRLB Proto Labs Inc. | Add +17.4% | 0.93% | +0.18 |
| NVDA Nvidia Corp. | Add +0.5% | 0.67% | +0.17 |
| WCPRF Whitecap Resources Inc. | Add +35.8% | 0.66% | +0.16 |
| MCHP Microchip Technology Inc. | Add +20.3% | 0.39% | +0.15 |
| PCRX Pacira Biosciences Inc. | Add +19.5% | 1.79% | +0.10 |
| FRSH Freshworks Inc. Class A | Add +5.4% | 2.80% | +0.08 |
| CMG Chipotle Mexican Grill Inc. | Add +0.5% | 1.67% | +0.06 |
| SHOO Steven Madden Ltd. | Add +235.4% | 0.09% | +0.05 |
| SHOP Shopify Inc. Class A | Add +4.7% | 0.13% | +0.02 |
| NVGS Navigator Holdings Ltd. | Add +2.3% | 2.50% | +0.01 |
| YEXT Yext Inc. | Add +0.1% | 0.02% | +0.00 |
| SBUX Starbucks Corp. | Add +15.8% | 0.10% | −0.00 |
| PFE Pfizer Inc. | Add +8.6% | 0.21% | −0.01 |
| KLTR Kaltura Inc. | Add +0.1% | 0.89% | −0.01 |
| FLG Flagstar Bank NA | Add +12.6% | 0.25% | −0.01 |
| TECH Bio-Techne Corp. | Add +3.7% | 0.10% | −0.02 |
| WEAV Weave Communications Inc. | Add +7.7% | 0.08% | −0.03 |
| PTEN Patterson-Uti Energy Inc. | Add +27.2% | 0.25% | −0.04 |
| AOSL Alpha & Omega Semiconductor | Add +0.6% | 1.13% | −0.05 |
| FIVN FIVE9 Inc. | Add +7.5% | 2.19% | −0.07 |
| PROF Profound Medical Corp. | Add +3.1% | 2.10% | −0.08 |
| ICUI Icu Medical Inc. | Add +0.9% | 0.87% | −0.11 |
| VERX Vertex Inc. Class A | Add +0.5% | 1.94% | −0.13 |
| SAM Boston Beer Company Inc. Class A | Add +2.2% | 0.97% | −0.32 |
| KMX Carmax Inc. | Add +3.9% | 2.23% | −0.47 |
| TMCI Treace Medical Concepts Inc. | Add +28.8% | 2.69% | −0.54 |
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 |