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Gagnon Securities LLC

SEC CIK
0001125725
Latest filing
Aug 4, 2026

Holdings in Q2 2021

Holdings as of Jun 30, 2021, filed Jul 28, 2021. Long positions only; changes compare share counts with Q1 2021.

Institution overview
Positions
111
+3 vs. Q1 2021
Portfolio value
$704.3M
+$47.6M (+7.3%) vs. Q1 2021
Filed
Jul 28, 2021
SEC
Holdings of Gagnon Securities LLC in Q2 2021
SecurityClassSharesValue% of portfolioShare changeActionHistory
CDNACareDx, Inc.COM761,740$69.7M9.9%−57,525−7.0%ReducedHistory
ALSumisho Air Lease CorpCL A888,002$37.1M5.3%−503−0.1%ReducedHistory
ENSGEnsign Group, IncCOM400,630$34.7M4.9%−3,126−0.8%ReducedHistory
AMRCAmeresco, Inc.CL A485,852$30.5M4.3%−56,624−10.4%ReducedHistory
PCRXPacira BioSciences, Inc.COM499,333$30.3M4.3%+44,484+9.8%AddedHistory
LLLL Flooring Holdings, Inc.COM1,236,207$26.1M3.7%+436,514+54.6%AddedHistory
FIVNFive9, Inc.COM128,145$23.5M3.3%−143−0.1%ReducedHistory
AOSLAlpha & Omega Semiconductor LtdSHS755,916$23.0M3.3%−391−0.1%ReducedHistory
BLBlackline, Inc.COM197,660$22.0M3.1%+16,424+9.1%AddedHistory
ISRGIntuitive Surgical IncCOM NEW23,358$21.5M3.0%+40.0%AddedHistory
NVGSNavigator Holdings Ltd.SHS1,808,456$19.8M2.8%+39,997+2.3%AddedHistory
EVBGEverbridge, Inc.COM144,883$19.7M2.8%+15,675+12.1%AddedHistory
IRBTiRobot CorpCOM187,042$17.5M2.5%+83,359+80.4%AddedHistory
BLFSBiolife Solutions IncCOM NEW383,190$17.1M2.4%−12,690−3.2%ReducedHistory
YEXTYext, Inc.COM1,130,346$16.2M2.3%+409,681+56.8%AddedHistory
KMXCarMax IncCOM123,557$16.0M2.3%+357+0.3%AddedHistory
EPDEnterprise Products Partners L.P.Stock627,163$15.1M2.1%−465−0.1%ReducedHistory
NEWRNew Relic, Inc.COM214,754$14.4M2.0%+297+0.1%AddedHistory
EQIXEquinix IncCOM16,881$13.5M1.9%+25+0.1%AddedHistory
ONTOOnto Innovation Inc.COM183,185$13.4M1.9%−14,455−7.3%ReducedHistory
PROFProfound Medical Corp.COM NEW800,845$13.1M1.9%+22,955+3.0%AddedHistory
ETWOE2open Parent Holdings, Inc.COM CL A1,131,995$12.9M1.8%+253,419+28.8%AddedHistory
APENApollo Endosurgery, Inc.COM1,570,619$12.7M1.8%+3,825+0.2%AddedHistory
SCWXSecureWorks CorpCL A655,144$12.1M1.7%+178,395+37.4%AddedHistory
CSLTCastlight Health, Inc.CL B4,122,263$10.8M1.5%−9,745−0.2%ReducedHistory
CM Life Sciences Inc18978W208UNIT 09/01/2025656,269$10.3M1.5%−670.0%Reduced–
CM Life Sciences II Inc125842203UNIT 02/25/2028761,193$10.2M1.5%−1,257−0.2%Reduced–
QDELQuidelOrtho CorpCOM73,753$9.45M1.3%+57,333+349.2%AddedHistory
PNTGPennant Group, Inc.COM192,115$7.86M1.1%−30.0%ReducedHistory
CELCCelcuity Inc.COM319,307$7.66M1.1%−94,985−22.9%ReducedHistory
CMGChipotle Mexican Grill IncCOM4,828$7.49M1.1%+39+0.8%AddedHistory
DVNDevon Energy CorpStock247,880$7.24M1.0%−10,367−4.0%ReducedHistory
PSIXPower Solutions International, Inc.Stock1,170,507$7.14M1.0%+4,141+0.4%AddedHistory
PRLBProto Labs IncCOM59,592$5.47M0.8%+1,107+1.9%AddedHistory
ZUOZuora IncCOM CL A303,420$5.23M0.7%+12,000+4.1%AddedHistory
CNFCNFinance Holdings Ltd.SPON ADS1,395,167$5.19M0.7%+1,283+0.1%AddedHistory
CM Life Sciences III Inc125841205UNIT 04/30/2028468,907$5.13M0.7%+468,907New–
MIROMiromatrix Medical Inc.COM435,909$5.08M0.7%+435,909NewHistory
CTRECareTrust REIT, Inc.COM216,795$5.04M0.7%−698−0.3%ReducedHistory
TFFPTFF Pharmaceuticals, Inc.COM458,601$4.41M0.6%+80,625+21.3%AddedHistory
Opsens Incorporated683823108Common Stock2,206,071$4.04M0.6%+2,206,071New–
AKAMAkamai Technologies IncCOM32,131$3.75M0.5%+297+0.9%AddedHistory
GNRCGenerac Holdings Inc.Stock6,869$2.85M0.4%+98+1.4%AddedHistory
RDHLRedHill Biopharma Ltd.SPONSORED ADS342,618$2.36M0.3%+10,781+3.2%AddedHistory
TLMDSOC Telemed, Inc.COM CL A409,728$2.33M0.3%+56,955+16.1%AddedHistory
DRRXDurect CorpCOM1,328,307$2.17M0.3%−15,498−1.2%ReducedHistory
XOMExxonMobil Holdings CorpCOM31,240$1.97M0.3%−30−0.1%ReducedHistory
TPRTapestry, Inc.COM44,991$1.96M0.3%+1,591+3.7%AddedHistory
FLXNFlexion Therapeutics IncCOM209,030$1.72M0.2%+1,683+0.8%AddedHistory
TAT&T Inc.Stock57,760$1.66M0.2%−19,379−25.1%ReducedHistory
CAKECheesecake Factory IncCOM28,622$1.55M0.2%+628+2.2%AddedHistory
MCHPMicrochip Technology IncStock10,338$1.55M0.2%+98+1.0%AddedHistory
SLGSL Green Realty CorpCOM19,095$1.53M0.2%−8,461−30.7%ReducedHistory
GNTXGentex CorpCOM45,402$1.50M0.2%+722+1.6%AddedHistory
NEXNextier Oilfield Solutions Inc.COM300,325$1.43M0.2%+58,939+24.4%AddedHistory
E2open Parent Holdings, Inc.29788T111*W EXP 02/04/202396,916$1.36M0.2%+396,916New–
PFEPfizer IncStock33,957$1.33M0.2%−225−0.7%ReducedHistory
MRVLMarvell Technology, Inc.COM18,850$1.10M0.2%+4,203+28.7%AddedHistory
Nintendo Ltd ADR654445303ADR14,566$1.06M0.2%+259+1.8%Added–
TTOOT2 Biosystems, Inc.COM869,564$1.03M0.1%+275,133+46.3%AddedHistory
WLYJohn Wiley & Sons, Inc.CL A13,396$806.0K0.1%+404+3.1%AddedHistory
PYPLPayPal Holdings, Inc.Stock2,492$726.0K0.1%+59+2.4%AddedHistory
Ocado Group PLCG6718L106COM25,280$700.0K0.1%+344+1.4%Added–
NVDANVIDIA CorpStock850$680.0K0.1%−38−4.3%ReducedHistory
Uranium Participation Corporat917017105COM148,149$654.0K0.1%+8,641+6.2%Added–
PETSPetmed Express IncCOM19,365$617.0K0.1%+9,829+103.1%AddedHistory
URGUr-Energy IncCOM428,204$599.0K0.1%+29,099+7.3%AddedHistory
WFCWells Fargo & CompanyStock13,056$591.0K0.1%00.0%UnchangedHistory
WBAWalgreens Boots Alliance, Inc.COM10,997$579.0K0.1%−9−0.1%ReducedHistory
ETEnergy Transfer LPCOM UT LTD PTN50,840$540.0K0.1%+3,392+7.1%AddedHistory
EOGEOG Resources IncStock6,454$539.0K0.1%−1,706−20.9%ReducedHistory
Sysmex CorpJ7864H102COM4,514$537.0K0.1%−10−0.2%Reduced–
CM Life Sciences Inc18978W109COM CL A38,117$534.0K0.1%+38,117New–
EQCEQC Liquidating TrustCOM SH BEN INT20,311$532.0K0.1%+20,311NewHistory
Exchange Traded Concepts Tr301505715NORTH SHOR GBL8,162$510.0K0.1%+567+7.5%Added–
VTRSViatris IncStock34,772$497.0K0.1%−26−0.1%ReducedHistory
BFLYButterfly Network, Inc.COM CL A33,666$487.0K0.1%−7,964−19.1%ReducedHistory
EHTHeHealth, Inc.COM8,279$483.0K0.1%00.0%UnchangedHistory
CHGGChegg, IncCOM5,576$463.0K0.1%+182+3.4%AddedHistory
GDRXGoodRx Holdings, Inc.COM CL A12,536$451.0K0.1%+2,232+21.7%AddedHistory
ETSYEtsy IncCOM2,165$446.0K0.1%+44+2.1%AddedHistory
CLBCore Laboratories Inc.COM10,815$421.0K0.1%+649+6.4%AddedHistory
DNNDenison Mines Corp.COM351,064$418.0K0.1%+26,233+8.1%AddedHistory
Monmouth Real Estate Investment Corp609720107CL A22,209$416.0K0.1%+22,209New–
LPSNLiveperson IncCOM6,508$412.0K0.1%+17+0.3%AddedHistory
MUMicron Technology IncStock4,572$389.0K0.1%+5+0.1%AddedHistory
RRCRange Resources CorpCOM22,157$371.0K0.1%+1,526+7.4%AddedHistory
GOOGLAlphabet Inc.Stock151$369.0K0.1%00.0%UnchangedHistory
METAMeta Platforms, Inc.Stock1,058$368.0K0.1%+1+0.1%AddedHistory
APTOAptose Biosciences Inc.COM NEW109,567$364.0K0.1%−440.0%ReducedHistory
MRKMerck & Co., Inc.Stock4,603$358.0K0.1%−4−0.1%ReducedHistory
Sailpoint Technologies Holdings, Inc.78781P105COM6,904$353.0K0.1%+6,904New–
Rada Electr Inds LtdM81863124COM PAR NEW28,729$350.0K<0.1%+164+0.6%Added–
Blue Prism Group PLCG1193C101COM NEW28,374$317.0K<0.1%+411+1.5%Added–
RESRPC IncCOM62,847$311.0K<0.1%+5,507+9.6%AddedHistory
HPHelmerich & Payne, Inc.COM9,240$302.0K<0.1%+524+6.0%AddedHistory
NCSMNCS Multistage Holdings, Inc.COM NEW10,019$296.0K<0.1%+632+6.7%AddedHistory
RBLXRoblox CorpStock3,236$291.0K<0.1%+4+0.1%AddedHistory
ZENZendesk, Inc.COM1,832$264.0K<0.1%+88+5.0%AddedHistory
VIAVViavi Solutions Inc.COM14,301$253.0K<0.1%+866+6.4%AddedHistory

Sold out since Q1 2021 (7)

Positions held at the end of Q1 2021 that are gone from this filing.

Positions of Gagnon Securities LLC sold out since Q1 2021
SecurityClassShares in Q1 2021Value in Q1 2021% of portfolio in Q1 2021History
General Fin Corp Del369822101COM2,261,797$27.5M4.2%–
TLNDTalend S.A.ADS83,125$5.29M0.8%History
General Finance Corp369822507PFD28,637$2.99M0.5%–
Air Lease Corp00912X500PFD110,603$2.90M0.4%–
PLTRPalantir Technologies Inc.Stock30,166$703.0K0.1%History
MODNModel N, Inc.COM5,296$187.0K<0.1%History
Seven Generations Energyltd81783Q105COM20,241$137.0K<0.1%–