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Livermore
Livermore
ZHEN

Gagnon Securities LLC

SEC CIK
0001125725
Latest filing
Aug 4, 2026

Holdings in Q2 2026

Holdings as of Jun 30, 2026, filed Aug 4, 2026. Long positions only; changes compare share counts with Q1 2026.

Institution overview
Positions
83
−2 vs. Q1 2026
Portfolio value
$518.8M
+$85.6M (+19.8%) vs. Q1 2026
Filed
Aug 4, 2026
SEC
Holdings of Gagnon Securities LLC in Q2 2026
SecurityClassSharesValue% of portfolioShare changeActionHistory
RDHLRedHill Biopharma Ltd.SPONSORED ADR88,405$74.7K<0.1%00.0%UnchangedHistory
PTENPatterson Uti Energy IncCOM17,420$159.9K<0.1%−297,226−94.5%ReducedHistory
ATNMActinium Pharmaceuticals, Inc.COM182,142$178.5K<0.1%−19,158−9.5%ReducedHistory
MSFTMicrosoft CorpStock556$207.4K<0.1%+11+2.0%AddedHistory
BXBlackstone Inc.COM1,940$228.3K<0.1%00.0%UnchangedHistory
RMBSRambus IncCOM1,778$236.0K<0.1%−944−34.7%ReducedHistory
RNTXRein Therapeutics, Inc.COM NEW229,070$238.2K<0.1%−10,450−4.4%ReducedHistory
ELVAElectrovaya Inc.COM NEW26,307$276.2K0.1%+50+0.2%AddedHistory
PLPlanet Labs PBCCOM CL A8,352$276.7K0.1%00.0%UnchangedHistory
Beyond Meat, Inc.08862EAB5NOTE 3/1381,271$286.0K0.1%+381,271New–
VCELVericel CorpCOM7,303$324.9K0.1%+7,303NewHistory
RNGRingCentral, Inc.CL A8,517$332.0K0.1%+95+1.1%AddedHistory
WRBYWarby Parker Inc.CL A COM11,381$345.3K0.1%+11,381NewHistory
AKAMAkamai Technologies IncCOM3,163$373.9K0.1%+267+9.2%AddedHistory
Ces Energy Solutions Corp15713J104COM33,350$389.5K0.1%00.0%Unchanged–
MRKMerck & Co., Inc.Stock3,187$409.5K0.1%−5−0.2%ReducedHistory
SBUXStarbucks CorpStock4,045$413.4K0.1%−26−0.6%ReducedHistory
ETSYEtsy IncCOM5,755$433.5K0.1%−18−0.3%ReducedHistory
SHOPShopify Inc.Stock4,023$459.3K0.1%+91+2.3%AddedHistory
METAMeta Platforms, Inc.Stock839$472.6K0.1%00.0%UnchangedHistory
VIAVViavi Solutions Inc.COM9,986$476.8K0.1%−4,525−31.2%ReducedHistory
MTSIMACOM Technology Solutions Holdings, Inc.COM1,281$487.3K0.1%−2,389−65.1%ReducedHistory
LTHLife Time Group Holdings, Inc.COMMON STOCK13,465$549.9K0.1%−85−0.6%ReducedHistory
PFEPfizer IncStock23,346$562.2K0.1%−20,914−47.3%ReducedHistory
HIMXHimax Technologies, Inc.SPONSORED ADR39,498$605.9K0.1%−5,275−11.8%ReducedHistory
TAT&T Inc.Stock30,898$639.6K0.1%−1,196−3.7%ReducedHistory
ONTOOnto Innovation Inc.COM1,709$646.8K0.1%−533−23.8%ReducedHistory
GOOGAlphabet Inc.Stock1,929$681.6K0.1%−5−0.3%ReducedHistory
CVLTCommvault Systems IncCOM4,874$690.8K0.1%+498+11.4%AddedHistory
NVDANVIDIA CorpStock3,498$699.9K0.1%−157−4.3%ReducedHistory
CGNXCognex CorpCOM9,798$709.6K0.1%+18+0.2%AddedHistory
Nintendo Ltd ADR654445303ADR70,675$740.7K0.1%+978+1.4%Added–
MUMicron Technology IncStock679$783.8K0.2%−398−37.0%ReducedHistory
DVNDevon Energy CorpStock19,021$785.9K0.2%−45−0.2%ReducedHistory
TECHBIO-TECHNE CorpCOM12,230$864.0K0.2%+2,351+23.8%AddedHistory
MRVLMarvell Technology, Inc.COM2,923$870.7K0.2%−3,902−57.2%ReducedHistory
GOOGLAlphabet Inc.Stock2,556$913.4K0.2%00.0%UnchangedHistory
CNFCNFinance Holdings Ltd.SPONSORED ADS332,345$920.6K0.2%+18,407+5.9%AddedHistory
DOCUDocuSign, Inc.Stock20,906$928.6K0.2%−326−1.5%ReducedHistory
WEAVWeave Communications, Inc.Stock157,170$998.7K0.2%+122,950+359.3%AddedHistory
APPSDigital Turbine, Inc.COM NEW81,839$1.06M0.2%00.0%UnchangedHistory
FLGFlagstar Bank, National AssociationStock74,456$1.11M0.2%−255−0.3%ReducedHistory
NCNOnCino, Inc.COM75,333$1.23M0.2%−4,187−5.3%ReducedHistory
SAMBoston Beer Co IncCL A7,283$1.29M0.2%+44+0.6%AddedHistory
SLGSL Green Realty CorpCOM25,862$1.34M0.3%00.0%UnchangedHistory
GNLGlobal Net Lease, Inc.COM NEW160,598$1.44M0.3%−9,527−5.6%ReducedHistory
GNTXGentex CorpCOM57,159$1.44M0.3%+226+0.4%AddedHistory
MCHPMicrochip Technology IncStock26,229$2.39M0.5%−609−2.3%ReducedHistory
KLTRKaltura IncCOM3,266,999$4.25M0.8%−11,937−0.4%ReducedHistory
ICUIIcu Medical IncCOM29,400$4.31M0.8%−343−1.2%ReducedHistory
WCPRFWhitecap Resources Inc.COM435,100$4.52M0.9%−318−0.1%ReducedHistory
PNTGPennant Group, Inc.COM135,035$4.99M1.0%−2,449−1.8%ReducedHistory
CTRECareTrust REIT, Inc.COM129,955$5.24M1.0%−3,091−2.3%ReducedHistory
CMGChipotle Mexican Grill IncCOM155,463$5.29M1.0%−2,386−1.5%ReducedHistory
CELCCelcuity Inc.COM53,240$5.57M1.1%−102−0.2%ReducedHistory
DVDoubleVerify Holdings, Inc.COM523,328$5.67M1.1%+34,866+7.1%AddedHistory
OSUROrasure Technologies IncCOM1,592,147$7.10M1.4%−122,244−7.1%ReducedHistory
HZOMarinemax IncCOM211,480$7.74M1.5%−9,130−4.1%ReducedHistory
AMPLAmplitude, Inc.Stock1,055,508$8.07M1.6%−4,328−0.4%ReducedHistory
VERXVertex, Inc.Stock761,026$8.74M1.7%+292,806+62.5%AddedHistory
PRLBProto Labs IncCOM116,283$9.48M1.8%+5,394+4.9%AddedHistory
ASPNAspen Aerogels IncCOM1,535,812$9.74M1.9%−326,039−17.5%ReducedHistory
BLBlackline, Inc.COM375,769$10.5M2.0%+79,345+26.8%AddedHistory
ISRGIntuitive Surgical IncCOM NEW29,144$11.6M2.2%−2,475−7.8%ReducedHistory
0000000000Stock765,179$11.7M2.3%+765,179New–
TMCITreace Medical Concepts, Inc.COM3,029,543$12.1M2.3%−2,172,343−41.8%ReducedHistory
CARGCarGurus, Inc.COM CL A367,073$12.5M2.4%+95,549+35.2%AddedHistory
PROFProfound Medical Corp.COM NEW1,960,074$13.0M2.5%+15,750+0.8%AddedHistory
BLFSBiolife Solutions IncCOM NEW535,906$15.1M2.9%−606−0.1%ReducedHistory
HNGEHinge Health, Inc.CL A182,959$15.2M2.9%+58,709+47.3%AddedHistory
FIVNFive9, Inc.COM722,698$15.4M3.0%+100,634+16.2%AddedHistory
PCRXPacira BioSciences, Inc.COM608,617$15.4M3.0%−8,893−1.4%ReducedHistory
FRSHFreshworks Inc.Stock1,563,866$15.8M3.1%−167,501−9.7%ReducedHistory
KMXCarMax IncCOM325,410$17.2M3.3%+15,711+5.1%AddedHistory
EQIXEquinix IncCOM16,720$17.4M3.4%−231−1.4%ReducedHistory
CAKECheesecake Factory IncCOM221,792$17.6M3.4%−3,256−1.4%ReducedHistory
QDELQuidelOrtho CorpCOM1,030,371$18.0M3.5%+627,046+155.5%AddedHistory
EPDEnterprise Products Partners L.P.Stock510,576$18.8M3.6%−3,681−0.7%ReducedHistory
GNRCGenerac Holdings Inc.Stock73,170$21.4M4.1%−1,743−2.3%ReducedHistory
AMRCAmeresco, Inc.CL A826,562$22.8M4.4%−13,501−1.6%ReducedHistory
ENSGEnsign Group, IncCOM173,911$27.9M5.4%−5,760−3.2%ReducedHistory
WGSGeneDx Holdings Corp.COM CL A524,865$36.0M6.9%+221,716+73.1%AddedHistory
CDNACareDx, Inc.COM1,770,735$50.5M9.7%+8,861+0.5%AddedHistory

Sold out since Q1 2026 (6)

Positions held at the end of Q1 2026 that are gone from this filing.

Positions of Gagnon Securities LLC sold out since Q1 2026
SecurityClassShares in Q1 2026Value in Q1 2026% of portfolio in Q1 2026History
NVGSNavigator Holdings Ltd.SHS886,631$17.1M4.0%History
iShares Tr46436E7180-3 MTH TREASURY92,702$9.33M2.2%–
AOSLAlpha & Omega Semiconductor LtdSHS167,874$3.72M0.9%History
GRSDGRANDSTAND LtdORDINARY SHARES109,697$425.6K0.1%History
EOGEOG Resources IncStock1,851$267.6K0.1%History
SVVSavers Value Village, Inc.COM25,148$187.1K<0.1%History