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13F-HR filed by GAGNON SECURITIES LLC

GAGNON SECURITIES LLC filed this 13F-HR for the quarter ended 2026-03-31, filed 2026-04-22, with 85 holding rows worth $433,208,474.

Accession
0001019056-26-000076
Filed
2026-04-22
Accepted by EDGAR
acceptance time not in the bulk data set
Ingested
Source
SEC quarterly data set

Original filing

13F report for Q1 2026

A holdings report, 85 entries on the cover page, a total value of $433,208,474 stated on the cover page (in dollars after the unit check, H1), rows summing to $433,208,476 with VALUE read as dollars as filed, 13F file number 028-06377. The quarter's positions are built on this report. The resolved quarter.

The information table after summing rows of one CUSIP and put or call (H4), with the CUSIP and issuer name as filed. Values in dollars after the unit check (method).

Issuer as filedCUSIPClassAmountValueValue read asType
ENSIGN GROUP INC29358P101COM179,671$36,203,707dollars as filed
CAREDX INC14167L103COM1,761,874$30,586,140dollars as filed
AMERESCO INC02361E108CL A840,063$21,421,607dollars as filed
GENEDX HOLDINGS CORP81663L200COM CL A303,149$19,468,229dollars as filed
ENTERPRISE PRODS PARTNERS L293792107COM514,257$19,459,485dollars as filed
NAVIGATOR HLDGS LTD SHSY62132108Stock886,631$17,138,577dollars as filed
EQUINIX INC COM29444U700REIT16,951$16,616,048dollars as filed
GENERAC HLDGS INC368736104COM74,913$14,632,756dollars as filed
Intuitive Surgical,Inc.46120E602COM31,619$14,576,048dollars as filed
PACIRA BIOSCIENCES INC COM695127100Stock617,510$13,955,726dollars as filed
FRESHWORKS INC CLASS A COM358054104Stock1,731,367$13,902,877dollars as filed
CARMAX INC COM143130102Stock309,699$12,877,284dollars as filed
PROFOUND MED CORP74319B502COM NEW1,944,324$12,599,219dollars as filed
CHEESECAKE FACTORY INC163072101COM225,048$12,321,378dollars as filed
BLACKLINE, INC.09239B109COM296,424$10,967,688dollars as filed
BIOLIFE SOLUTIONS INC COM NEW09062W204Stock536,512$10,236,649dollars as filed
FIVE9 INC338307101COM622,064$9,436,711dollars as filed
iShares 0-3 Month Treasury Bond ETF46436E718SHS92,702$9,331,383dollars as filed
CARGURUS INC COM CL A141788109Stock271,524$9,245,392dollars as filed
AMPLITUDE INC COM CL A03213A104Stock1,059,836$7,228,082dollars as filed
TREACE MED CONCEPTS INC89455T109COM5,201,886$6,970,527dollars as filed
QUIDELORTHO CORP COM219798105Stock403,325$6,626,630dollars as filed
ASPEN AEROGELS INC04523Y105COMMON STOCK1,861,851$6,367,530dollars as filed
PROTO LABS INC743713109COM110,889$6,322,891dollars as filed
CELCUITY INC15102K100COM53,342$6,088,456dollars as filed
MARINEMAX INC567908108COM220,610$5,969,707dollars as filed
VERTEX INC92538J106CL A468,220$5,567,136dollars as filed
ORASURE TECHNOLOGIES INC68554V108COM1,714,391$5,143,173dollars as filed
CHIPOTLEMEXICANGRILLI169656105STOK157,849$5,052,746dollars as filed
WHITECAP RESOURCES INC96467A200USD435,418$4,898,472dollars as filed
CARETRUST REIT INC COM14174T107REIT133,046$4,876,136dollars as filed
HINGE HEALTH INC A433313103COMMON STOCK124,250$4,791,080dollars as filed
DOUBLEVERIFY HLDGS INC COM25862V105Stock488,462$4,640,389dollars as filed
PENNANT GROUP INC70805E109COM137,484$4,190,512dollars as filed
KALTURA INC483467106COMMON STOCK3,278,936$4,000,302dollars as filed
ICU MED INC44930G107COM29,743$3,841,308dollars as filed
ALPHA & OMEGA SEMICONDUCTORG6331P104SHS167,874$3,720,088dollars as filed
PATTERSON-UTI ENERGY INC703481101COM314,646$3,407,616dollars as filed
MICROCHIP TECHNOLOGY INC. COM595017104Stock26,838$1,734,015dollars as filed
BOSTON BEER INC CL A100557107Stock7,239$1,667,866dollars as filed
GLOBAL NET LEASE INC COM NEW379378201REIT170,125$1,592,370dollars as filed
GENTEX CORP COM371901109Stock56,933$1,243,995dollars as filed
Pfizer Inc.717081103COM44,260$1,242,821dollars as filed
CNFINANCE HLDGS LTD18979T204SPONSORED ADS313,938$1,227,498dollars as filed
NCINO INC63947X101COM79,520$1,191,210dollars as filed
DOCUSIGN INC COM256163106Stock21,232$1,006,609dollars as filed
NINTENDO LTD FSPONSORED ADR 1 ADR REP 0.25 ORD SHS654445303Equity69,697$995,970dollars as filed
FLAGSTAR FINANCIAL INC649445400COM NEW74,711$983,944dollars as filed
DEVON ENERGY CORP NEW COM25179M103Stock19,066$959,401dollars as filed
SL GREEN RLTY CORP COM78440X887REIT25,862$955,342dollars as filed
AT&T Inc00206R102COM32,094$930,405dollars as filed
MACOM TECH SOLUTIONS HLDGS INC COM55405Y100Stock3,670$814,997dollars as filed
Alphabet Inc. Reg. Shares A02079K305COM2,556$735,003dollars as filed
MARVELL TECHNOLOGY INC573874104COM6,825$676,017dollars as filed
NVIDIA Corp67066G104COM3,655$637,432dollars as filed
Alphabet Inc. Reg. Shares C02079K107COM1,934$554,787dollars as filed
BIO-TECHNE CORP09073M104COM9,879$516,277dollars as filed
VIAVI SOLUTIONS INC925550105COM14,511$482,926dollars as filed
META PLATFORMS INC CL A30303M102COM839$480,017dollars as filed
COGNEX CORP192422103COM9,780$479,122dollars as filed
SHOPIFY INC82509L107CL A SUB VTG SHS3,932$466,414dollars as filed
ONTO INNOVATION INC COM683344105Stock2,242$459,767dollars as filed
CES ENERGY SOLUTIONS CORP15713J104COM33,350$439,951dollars as filed
GRANDSTAND LTD ORDINARY SHARESG3R239101Stock109,697$425,624dollars as filed
Merck & Co.,Inc.58933Y105COM3,192$383,966dollars as filed
LIFE TIME GROUP HOLDINGS INC COMMON STOCK53190C102Stock13,550$365,037dollars as filed
Starbucks Corporation855244109COM4,071$364,721dollars as filed
Micron Technology,Inc.595112103COM1,077$363,854dollars as filed
HIMAX TECHNOLOGIES INC SPONSORED ADR43289P106ADR44,773$352,364dollars as filed
COMMVAULT SYS INC COM204166102Stock4,376$340,847dollars as filed
AKAMAI TECHNOLOGIES INC COM00971T101Stock2,896$332,606dollars as filed
RINGCENTRAL INC76680R206CL A8,422$313,214dollars as filed
REIN THERAPEUTICS INC00887A204COM NEW239,520$311,376dollars as filed
ETSY INC29786A106COM5,773$288,535dollars as filed
EOG RES INC COM26875P101Stock1,851$267,599dollars as filed
DIGITAL TURBINE INC25400W102COM NEW81,839$235,696dollars as filed
RAMBUS INC DEL COM750917106Stock2,722$234,174dollars as filed
PLANET LABS PBC72703X106COM CL A8,352$233,438dollars as filed
BLACKSTONE INC09260D107COM1,940$223,081dollars as filed
ELECTROVAYA INC28617B606COM26,257$205,330dollars as filed
Microsoft Corp594918104COM545$201,743dollars as filed
ACTINIUM PHARMACEUTICALS00507W206COM201,300$200,354dollars as filed
SAVERS VALUE VLG INC80517M109COM25,148$187,101dollars as filed
WEAVE COMMUNICATIONS INC94724R108COM34,220$158,096dollars as filed
REDHILL BIOPHARMA LTD757468301SPONSORED ADR88,405$65,879dollars as filed

Amendment chain

FilingRoleFiledAcceptedIngested
13F-HR 0001019056-26-000076this filing2026-04-22acceptance time not in the bulk data set