Holders — by stockHoldings — by fund
GAGNON SECURITIES LLC
Everything this manager disclosed owning in US-listed stocks — its complete Form 13F portfolio · as of 2026-06-30 · filed with the SEC up to 45 days after quarter end · CIK 0001125725
$518.8M
disclosed book value
83
positions
9.7%
largest position share
Positions, as of 2026-06-30
top 85 of 83 · 13F covers long US-listed positions only — cash, bonds, private and foreign stakes are not disclosed · PUT/CALL tags = options positions (share-equivalents), not shares held
| # | Issuer | Shares | Value | % of book |
|---|---|---|---|---|
| 1 | CDNACAREDX INC | 1.8M | $50.5M | 9.7% |
| 2 | WGSGENEDX HOLDINGS CORP | 524,865 | $36.0M | 6.9% |
| 3 | ENSGENSIGN GROUP INC | 173,911 | $27.9M | 5.4% |
| 4 | AMRCAMERESCO INC | 826,562 | $22.8M | 4.4% |
| 5 | GNRCGENERAC HLDGS INC | 73,170 | $21.4M | 4.1% |
| 6 | EPDENTERPRISE PRODS PARTNERS L P | 510,576 | $18.8M | 3.6% |
| 7 | QDELQUIDELORTHO CORP | 1.0M | $18.0M | 3.5% |
| 8 | CAKECHEESECAKE FACTORY INC | 221,792 | $17.6M | 3.4% |
| 9 | EQIXEQUINIX INC | 16,720 | $17.4M | 3.4% |
| 10 | KMXCARMAX INC | 325,410 | $17.2M | 3.3% |
| 11 | FRSHFRESHWORKS INC | 1.6M | $15.8M | 3.1% |
| 12 | PCRXPACIRA BIOSCIENCES INC | 608,617 | $15.4M | 3% |
| 13 | FIVNFIVE9 INC | 722,698 | $15.4M | 3% |
| 14 | HNGEHINGE HEALTH INC | 182,959 | $15.2M | 2.9% |
| 15 | BLFSBIOLIFE SOLUTIONS INC | 535,906 | $15.1M | 2.9% |
| 16 | PROFPROFOUND MED CORP | 2.0M | $13.0M | 2.5% |
| 17 | CARGCARGURUS INC | 367,073 | $12.5M | 2.4% |
| 18 | TMCITREACE MED CONCEPTS INC | 3.0M | $12.1M | 2.3% |
| 19 | ISRGINTUITIVE SURGICAL INC | 29,144 | $11.6M | 2.2% |
| 20 | NAVIGATOR HLDGS LTD | 612,300 | $11.4M | 2.2% |
| 21 | BLBLACKLINE INC | 375,769 | $10.5M | 2% |
| 22 | ASPNASPEN AEROGELS INC | 1.5M | $9.7M | 1.9% |
| 23 | PRLBPROTO LABS INC | 116,283 | $9.5M | 1.8% |
| 24 | VERXVERTEX INC | 761,026 | $8.7M | 1.7% |
| 25 | AMPLAMPLITUDE INC | 1.1M | $8.1M | 1.6% |
| 26 | HZOMarineMax Inc | 211,480 | $7.7M | 1.5% |
| 27 | OSUROraSure Technologies Inc | 1.6M | $7.1M | 1.4% |
| 28 | DVDOUBLEVERIFY HLDGS INC | 523,328 | $5.7M | 1.1% |
| 29 | CELCCELCUITY INC | 53,240 | $5.6M | 1.1% |
| 30 | CMGCHIPOTLE MEXICAN GRILL INC | 155,463 | $5.3M | 1% |
| 31 | CTRECARETRUST REIT INC | 129,955 | $5.2M | 1% |
| 32 | PNTGPENNANT GROUP INC | 135,035 | $5.0M | 1% |
| 33 | WCPRFWHITECAP RES INC | 435,100 | $4.5M | 0.9% |
| 34 | ICUIICU MED INC | 29,400 | $4.3M | 0.8% |
| 35 | KLTRKALTURA INC | 3.3M | $4.2M | 0.8% |
| 36 | MCHPMICROCHIP TECHNOLOGY INC. | 26,229 | $2.4M | 0.5% |
| 37 | GNTXGENTEX CORP | 57,159 | $1.4M | 0.3% |
| 38 | GNLGLOBAL NET LEASE INC | 160,598 | $1.4M | 0.3% |
| 39 | SLGSL GREEN RLTY CORP | 25,862 | $1.3M | 0.3% |
| 40 | SAMBOSTON BEER INC | 7,283 | $1.3M | 0.2% |
| 41 | NCNONCINO INC | 75,333 | $1.2M | 0.2% |
| 42 | FLGFLAGSTAR BANK NATIONAL ASSOCIA | 74,456 | $1.1M | 0.2% |
| 43 | APPSDIGITAL TURBINE INC | 81,839 | $1.1M | 0.2% |
| 44 | DOCUDOCUSIGN INC | 20,906 | $928,645 | 0.2% |
| 45 | CNFCNFINANCE HLDGS LTD | 332,345 | $920,596 | 0.2% |
| 46 | GOOGLALPHABET INC | 2,556 | $913,438 | 0.2% |
| 47 | MRVLMARVELL TECHNOLOGY INC | 2,923 | $870,734 | 0.2% |
| 48 | TECHBio-Techne Corp | 12,230 | $864,050 | 0.2% |
| 49 | DVNDEVON ENERGY CORP | 19,021 | $785,948 | 0.2% |
| 50 | MUMICRON TECHNOLOGY INC | 679 | $783,763 | 0.2% |
| 51 | NTDOYNINTENDO LTD | 70,675 | $740,674 | 0.1% |
| 52 | CGNXCognex Corp | 9,798 | $709,571 | 0.1% |
| 53 | WEAVWEBULL CORP | 108,027 | $704,336 | 0.1% |
| 54 | NVDANVIDIA CORPORATION | 3,498 | $699,915 | 0.1% |
| 55 | CVLTCOMMVAULT SYS INC | 4,874 | $690,792 | 0.1% |
| 56 | GOOGALPHABET INC | 1,929 | $681,574 | 0.1% |
| 57 | ONTOONTO INNOVATION INC | 1,709 | $646,771 | 0.1% |
| 58 | TAT&T INC | 30,898 | $639,589 | 0.1% |
| 59 | HIMXHIMAX TECHNOLOGIES INC | 39,498 | $605,899 | 0.1% |
| 60 | PFEPFIZER INC | 23,346 | $562,172 | 0.1% |
| 61 | LTHLIFE TIME GROUP HOLDINGS INC | 13,465 | $549,911 | 0.1% |
| 62 | MTSIMACOM TECH SOLUTIONS HLDGS INC | 1,281 | $487,254 | 0.1% |
| 63 | VIAVVIAVI SOLUTIONS INC | 9,986 | $476,832 | 0.1% |
| 64 | METAMETA PLATFORMS INC | 839 | $472,600 | 0.1% |
| 65 | SHOPSHOPIFY INC | 4,023 | $459,346 | 0.1% |
| 66 | ETSYETSY INC | 5,755 | $433,524 | 0.1% |
| 67 | SBUXSTARBUCKS CORP | 4,045 | $413,359 | 0.1% |
| 68 | MRKMERCK & CO INC | 3,187 | $409,530 | 0.1% |
| 69 | CESDFCES ENERGY SOLUTIONS CORP | 33,350 | $389,504 | 0.1% |
| 70 | AKAMAKAMAI TECHNOLOGIES INC | 3,163 | $373,898 | 0.1% |
| 71 | WRBYWARBY PARKER INC | 11,381 | $345,300 | 0.1% |
| 72 | RNGRINGCENTRAL INC | 8,517 | $331,993 | 0.1% |
| 73 | VCELVERICEL CORP | 7,303 | $324,910 | 0.1% |
| 74 | WEAVWEAVE COMMUNICATIONS INC | 49,143 | $294,367 | 0.1% |
| 75 | GAMBLING COM GROUP | 152,879 | $290,470 | 0.1% |
| 76 | BYND 0 03/15/27BEYOND MEATS INC | 381,271 | $285,953 | 0.1% |
| 77 | PLPLANET LABS PBC | 8,352 | $276,702 | 0.1% |
| 78 | ELVAELECTROVAYA INC | 26,307 | $276,224 | 0.1% |
| 79 | RNTXREIN THERAPEUTICS INC | 229,070 | $238,233 | 0% |
| 80 | RMBSRAMBUS INC DEL | 1,778 | $236,012 | 0% |
| 81 | BXBLACKSTONE INC | 1,940 | $228,280 | 0% |
| 82 | MSFTMICROSOFT CORP | 556 | $207,399 | 0% |
| 83 | ATNMACTINIUM PHARMACEUTICALS INC | 182,142 | $178,499 | 0% |
| 84 | PTENPATTERSON-UTI ENERGY INC | 17,420 | $159,916 | 0% |
| 85 | RDHLREDHILL BIOPHARMA LTD | 88,405 | $74,702 | 0% |
Source: SEC Form 13F-HR, reporting period 2026-06-30. Values are the manager's filed June-30-style quarter-end marks, not live prices. Research, not investment advice.