Gagnon Securities Llc
Institutional manager — quarterly 13F holdings, Q ending 2026-03-31
Reported value
$433.2M
Q ending 2026-03-31
Prior quarter
$491.1M
Q ending 2025-12-31
Change
-11.8% QoQ · -4.7% YoY
Positions
85
reported holdings
Largest positions
All 85 reported positions, Q ending 2026-03-31. A manager can hold shares, calls and puts on the same security at once — such positions are listed as separate rows. Type: Shares = common stock, Put/Call = option positions (valued at the underlying), Principal = debt. Tickers link to stock pages where covered.
| Holding | Ticker | Type | Value ▼ | Shares |
|---|---|---|---|---|
| Ensign Group Inc | ENSG | Shares | $36.2M | 180K |
| Caredx Inc | CDNA | Shares | $30.6M | 1.8M |
| Ameresco Inc | AMRC | Shares | $21.4M | 840K |
| Genedx Holdings Corp | WGS | Shares | $19.5M | 303K |
| Enterprise Prods Partners L P | EPD | Shares | $19.5M | 514K |
| Navigator Hldgs Ltd | Shares | $17.1M | 887K | |
| Equinix Inc | EQIX | Shares | $16.6M | 17K |
| Generac Hldgs Inc | GNRC | Shares | $14.6M | 75K |
| Intuitive Surgical Inc | ISRG | Shares | $14.6M | 32K |
| Pacira Biosciences Inc | PCRX | Shares | $14.0M | 618K |
| Freshworks Inc | FRSH | Shares | $13.9M | 1.7M |
| Carmax Inc | KMX | Shares | $12.9M | 310K |
| Profound Med Corp | PROF | Shares | $12.6M | 1.9M |
| Cheesecake Factory Inc | CAKE | Shares | $12.3M | 225K |
| Blackline Inc | BL | Shares | $11.0M | 296K |
| Biolife Solutions Inc | BLFS | Shares | $10.2M | 537K |
| Five9 Inc | FIVN | Shares | $9.4M | 622K |
| Ishares Tr | SGOV | Shares | $9.3M | 93K |
| Cargurus Inc | CARG | Shares | $9.2M | 272K |
| Amplitude Inc | AMPL | Shares | $7.2M | 1.1M |
| Treace Med Concepts Inc | TMCI | Shares | $7.0M | 5.2M |
| Quidelortho Corp | QDEL | Shares | $6.6M | 403K |
| Aspen Aerogels Inc | ASPN | Shares | $6.4M | 1.9M |
| Proto Labs Inc | PRLB | Shares | $6.3M | 111K |
| Celcuity Inc | CELC | Shares | $6.1M | 53K |
| Marinemax Inc | HZO | Shares | $6.0M | 221K |
| Vericel Corp | VERX | Shares | $5.6M | 468K |
| Orasure Technologies Inc | OSUR | Shares | $5.1M | 1.7M |
| Chipotle Mexican Grill Inc | CMG | Shares | $5.1M | 158K |
| Whitecap Res Inc | WCPRF | Shares | $4.9M | 435K |
| Caretrust Reit Inc | CTRE | Shares | $4.9M | 133K |
| Hinge Health Inc | HNGE | Shares | $4.8M | 124K |
| Doubleverify Hldgs Inc | DV | Shares | $4.6M | 488K |
| Pennant Group Inc | PNTG | Shares | $4.2M | 137K |
| Kaltura Inc | KLTR | Shares | $4.0M | 3.3M |
| Icu Med Inc | ICUI | Shares | $3.8M | 30K |
| Alpha & Omega Semiconductor Lt | Shares | $3.7M | 168K | |
| Patterson-Uti Energy Inc | PTEN | Shares | $3.4M | 315K |
| Microchip Technology Inc. | MCHP | Shares | $1.7M | 27K |
| Boston Beer Inc | SAM | Shares | $1.7M | 7K |
| Global Net Lease Inc | GNL | Shares | $1.6M | 170K |
| Gentex Corp | GNTX | Shares | $1.2M | 57K |
| Pfizer Inc | PFE | Shares | $1.2M | 44K |
| Cnfinance Hldgs Ltd | CNF | Shares | $1.2M | 314K |
| Ncino Inc | NCNO | Shares | $1.2M | 80K |
| Docusign Inc | DOCU | Shares | $1.0M | 21K |
| Nintendo Ltd | NTDOY | Shares | $996K | 70K |
| Flagstar Bank National Assoc | FLG | Shares | $984K | 75K |
| Devon Energy Corp | DVN | Shares | $959K | 19K |
| Sl Green Rlty Corp | SLG | Shares | $955K | 26K |
| At&T Inc | T | Shares | $930K | 32K |
| Macom Tech Solutions Hldgs Inc | MTSI | Shares | $815K | 4K |
| Alphabet Inc | GOOGL | Shares | $735K | 3K |
| Marvell Technology Inc | MRVL | Shares | $676K | 7K |
| Nvidia Corporation | NVDA | Shares | $637K | 4K |
| Alphabet Inc | GOOG | Shares | $555K | 2K |
| Bio-Techne Corp | TECH | Shares | $516K | 10K |
| Viavi Solutions Inc | VIAV | Shares | $483K | 15K |
| Meta Platforms Inc | META | Shares | $480K | 839 |
| Cognex Corp | CGNX | Shares | $479K | 10K |
| Shopify Inc | SHOP | Shares | $466K | 4K |
| Onto Innovation Inc | ONTO | Shares | $460K | 2K |
| Ces Energy Solutions Corp | CESDF | Shares | $440K | 33K |
| Gambling Com Group Limited | Shares | $426K | 110K | |
| Merck & Co Inc | MRK | Shares | $384K | 3K |
| Life Time Group Holdings Inc | LTH | Shares | $365K | 14K |
| Starbucks Corp | SBUX | Shares | $365K | 4K |
| Micron Technology Inc | MU | Shares | $364K | 1K |
| Himax Technologies Inc | HIMX | Shares | $352K | 45K |
| Commvault Sys Inc | CVLT | Shares | $341K | 4K |
| Akamai Technologies Inc | AKAM | Shares | $333K | 3K |
| Ringcentral Inc | RNG | Shares | $313K | 8K |
| Rein Therapeutics Inc | RNTX | Shares | $311K | 240K |
| Etsy Inc | ETSY | Shares | $289K | 6K |
| Eog Res Inc | EOG | Shares | $268K | 2K |
| Digital Turbine Inc | APPS | Shares | $236K | 82K |
| Rambus Inc | RMBS | Shares | $234K | 3K |
| Planet Labs Pbc | PL | Shares | $233K | 8K |
| Blackstone Inc | BX | Shares | $223K | 2K |
| Electrovaya Inc | ELVA | Shares | $205K | 26K |
| Microsoft Corp | MSFT | Shares | $202K | 545 |
| Actinium Pharmaceuticals Inc | ATNM | Shares | $200K | 201K |
| Savers Value Vlg Inc | SVV | Shares | $187K | 25K |
| Weave Communications Inc | WEAV | Shares | $158K | 34K |
| Redhill Biopharma Ltd | RDHL | Shares | $66K | 88K |
Values as reported in public regulatory filings (USD); holdings are reported quarterly, up to 45 days after quarter end, and may contain reporting errors. Nothing here is investment advice.