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GAGNON SECURITIES LLC
Period ended Sep 30, 2026 · Latest filing Nov 5, 2026
These quarterly holdings are delayed and may not include all assets or short positions.
Values are from the reporting date, not current prices or purchase costs.
The same security may appear in multiple rows.
Source: SEC
Reported portfolio value
Quarter-end reported holdings; not current value or investment performance.
View reported values
- Sep 30, 2026: $576,506,861
More quarters will appear as history becomes available.
Top holdings
Top 10 at Sep 30, 2026. Matching entries are combined; security classes and options remain separate. Shares exclude principal amounts; option shares reflect the reported underlying amount.
View top holdings values
- CAREDX INC · COM · 14167L103 · shares: $69,835,964
- GENEDX HOLDINGS CORP · COM CL A · 81663L200 · shares: $37,327,333
- ENSIGN GROUP INC · COM · 29358P101 · shares: $28,094,824
- CHEESECAKE FACTORY INC · COM · 163072101 · shares: $22,719,843
- BIOLIFE SOLUTIONS INC · COM NEW · 09062W204 · shares: $20,671,968
- FRESHWORKS INC · CLASS A COM · 358054104 · shares: $19,986,434
- FIVE9 INC · COM · 338307101 · shares: $19,278,432
- AMERESCO INC · CL A · 02361E108 · shares: $18,565,003
- ENTERPRISE PRODS PARTNERS L P · COM · 293792107 · shares: $18,124,671
- CARMAX INC · COM · 143130102 · shares: $17,981,125
Filing totals differ
The filing summary reports $576,506,861, while the holdings entries total $576,506,856.
Reported holdings
84 reported entries| Issuer | Class | CUSIP | Type | Shares / principal | Reported value (USD) |
|---|---|---|---|---|---|
| CAREDX INC | COM | 14167L103 | — | 1,074,399 shares | $69,835,964 |
| GENEDX HOLDINGS CORP | COM CL A | 81663L200 | — | 516,284 shares | $37,327,333 |
| ENSIGN GROUP INC | COM | 29358P101 | — | 163,342 shares | $28,094,824 |
| CHEESECAKE FACTORY INC | COM | 163072101 | — | 215,886 shares | $22,719,843 |
| BIOLIFE SOLUTIONS INC | COM NEW | 09062W204 | — | 532,097 shares | $20,671,968 |
| FRESHWORKS INC | CLASS A COM | 358054104 | — | 1,562,661 shares | $19,986,434 |
| FIVE9 INC | COM | 338307101 | — | 566,846 shares | $19,278,432 |
| AMERESCO INC | CL A | 02361E108 | — | 896,427 shares | $18,565,003 |
| ENTERPRISE PRODS PARTNERS L P | COM | 293792107 | — | 508,977 shares | $18,124,671 |
| CARMAX INC | COM | 143130102 | — | 326,277 shares | $17,981,125 |
| HINGE HEALTH INC | CL A | 433313103 | — | 180,163 shares | $17,519,050 |
| EQUINIX INC | COM | 29444U700 | — | 16,450 shares | $16,640,491 |
| GENERAC HLDGS INC | COM | 368736104 | — | 76,684 shares | $15,869,754 |
| PACIRA BIOSCIENCES INC | COM | 695127100 | — | 624,805 shares | $15,651,365 |
| TREACE MED CONCEPTS INC | COM | 89455T109 | — | 3,415,918 shares | $15,166,676 |
| AMPLITUDE INC | COM CL A | 03213A104 | — | 1,027,363 shares | $14,228,978 |
| NAVIGATOR HLDGS LTD | COM | Y62132108 | — | 607,557 shares | $14,083,171 |
| BLACKLINE INC | COM | 09239B109 | — | 520,030 shares | $13,796,396 |
| QUIDELORTHO CORP | COM NEW | 219798105 | — | 1,298,562 shares | $13,686,843 |
| VERTEX INC | CL A | 92538J106 | — | 1,045,187 shares | $12,312,303 |
| PROFOUND MED CORP | COM | 74319B502 | — | 2,050,587 shares | $11,893,405 |
| INTUITIVE SURGICAL INC | COM NEW | 46120E602 | — | 29,144 shares | $11,850,830 |
| CARGURUS INC | COM CL A | 141788109 | — | 368,573 shares | $11,484,735 |
| PROTO LABS INC | SPON ADS NEW | 743713109 | — | 118,371 shares | $11,227,489 |
| ASPEN AEROGELS INC | COM | 04523Y105 | — | 1,557,874 shares | $8,537,150 |
| BROOKDALE SR LIVING INC | COM | 112463104 | — | 739,175 shares | $8,005,265 |
| BRIGHTVIEW HLDGS INC | COM | 10948C107 | — | 748,393 shares | $7,483,930 |
| OraSure Technologies Inc | COM | 68554V108 | — | 1,826,604 shares | $7,160,288 |
| DOUBLEVERIFY HLDGS INC | COM | 25862V105 | — | 467,095 shares | $6,301,112 |
| KALTURA INC | COM | 483467106 | — | 4,591,798 shares | $5,877,501 |
| WHITECAP RES INC | COM NEW | 96467A200 | — | 436,734 shares | $5,410,918 |
| MarineMax Inc | COM | 567908108 | — | 103,184 shares | $5,396,523 |
| PENNANT GROUP INC | COM | 70805E109 | — | 135,035 shares | $5,266,365 |
| CHIPOTLE MEXICAN GRILL INC | COM | 169656105 | — | 156,350 shares | $4,995,383 |
| ICU MED INC | COM | 44930G107 | — | 29,630 shares | $4,755,911 |
| CARETRUST REIT INC | COM | 14174T107 | — | 129,955 shares | $4,753,754 |
| CELCUITY INC | COM | 15102K100 | — | 53,319 shares | $4,239,927 |
| MICROCHIP TECHNOLOGY INC. | COM | 595017104 | — | 26,577 shares | $2,066,908 |
| NCINO INC | SPONSORED ADS | 63947X101 | — | 73,495 shares | $1,332,464 |
| GENTEX CORP | COM | 371901109 | — | 58,417 shares | $1,269,995 |
| SL GREEN RLTY CORP | COM | 78440X887 | — | 25,862 shares | $1,265,169 |
| BOSTON BEER INC | CL A | 100557107 | — | 7,519 shares | $1,233,266 |
| GLOBAL NET LEASE INC | COM NEW | 379378201 | — | 148,055 shares | $1,222,934 |
| PARAMOUNT SKYDANCE CORP | COM CL B | 69932A204 | — | 108,399 shares | $1,119,762 |
| NINTENDO LTD | COM | 654445303 | — | 72,483 shares | $908,212 |
| ALPHABET INC | CAP STK CL A | 02079K305 | — | 2,556 shares | $879,468 |
| AT&T INC | COM | 00206R102 | — | 35,241 shares | $859,880 |
| MARVELL TECHNOLOGY INC | ORD | 573874104 | — | 3,232 shares | $853,928 |
| DIGITAL TURBINE INC | COM NEW | 25400W102 | — | 74,483 shares | $826,761 |
| DOCUSIGN INC | COM | 256163106 | — | 12,159 shares | $816,477 |
| NVIDIA CORPORATION | COM | 67066G104 | — | 3,498 shares | $798,873 |
| COMMVAULT SYS INC | COM | 204166102 | — | 4,886 shares | $732,509 |
| MICRON TECHNOLOGY INC | COM | 595112103 | — | 679 shares | $723,210 |
| SHOPIFY INC | CL A SUB VTG SHS | 82509L107 | — | 4,747 shares | $703,980 |
| PFIZER INC | COM NEW | 717081103 | — | 24,502 shares | $698,797 |
| RINGCENTRAL INC | CL A | 76680R206 | — | 8,503 shares | $635,174 |
| META PLATFORMS INC | CL A | 30303M102 | — | 839 shares | $608,426 |
| CNFINANCE HLDGS LTD | SPON ADS | 18979T204 | — | 305,612 shares | $595,943 |
| FLAGSTAR BANK NATIONAL ASSOCIA | COM NEW | 649445400 | — | 47,974 shares | $559,856 |
| HIMAX TECHNOLOGIES INC | SPONSORED ADR | 43289P106 | — | 39,498 shares | $555,737 |
| DEVON ENERGY CORP | COM | 25179M103 | — | 11,756 shares | $541,246 |
| LIFE TIME GROUP HOLDINGS INC | COMMON STOCK | 53190C102 | — | 13,465 shares | $536,984 |
| ONTO INNOVATION INC | COM | 683344105 | — | 1,730 shares | $532,529 |
| TECNOGLASS HOLDINGS INC | COM SHS | 87877F103 | — | 13,667 shares | $485,452 |
| AKAMAI TECHNOLOGIES INC | COM | 00971T101 | — | 4,480 shares | $476,448 |
| ABBOTT LABORATORIES | COM | 002824100 | — | 4,769 shares | $471,320 |
| MERCK & CO INC | COM | 58933Y105 | — | 3,187 shares | $463,103 |
| AMERICAN TOWER CORP | COM | 03027X100 | — | 2,776 shares | $454,403 |
| Cognex Corp | COM | 192422103 | — | 7,296 shares | $442,502 |
| VIAVI SOLUTIONS INC | COM | 925550105 | — | 10,231 shares | $428,884 |
| CES ENERGY SOLUTIONS CORP | COM | 15713J104 | — | 33,350 shares | $420,472 |
| ETSY INC | COM | 29786A106 | — | 5,782 shares | $413,355 |
| ALPHABET INC | CAP STK CL C | 02079K107 | — | 1,189 shares | $405,140 |
| WARBY PARKER INC | CL A | 93403J106 | — | 14,222 shares | $395,087 |
| STARBUCKS CORP | COM | 855244109 | — | 4,045 shares | $380,068 |
| MACOM TECH SOLUTIONS HLDGS INC | COM | 55405Y100 | — | 1,303 shares | $371,120 |
| WEAVE COMMUNICATIONS INC | COM | 94724R108 | — | 49,143 shares | $362,675 |
| VERICEL CORP | COM | 92346J108 | — | 7,839 shares | $314,657 |
| MICROSOFT CORP | COM | 594918104 | — | 558 shares | $286,198 |
| GRANDSTAND LTD | ORDINARY SHARES | G3R239101 | — | 153,455 shares | $231,717 |
| ELECTROVAYA INC | COM NEW | 28617B606 | — | 32,830 shares | $214,052 |
| ACTINIUM PHARMACEUTICALS INC | COM | 00507W206 | — | 182,142 shares | $203,999 |
| REIN THERAPEUTICS INC | COM NEW | 00887A204 | — | 229,070 shares | $184,172 |
| REDHILL BIOPHARMA LTD | SPONSORED ADR | 757468301 | — | 88,405 shares | $42,434 |