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Livermore
Livermore
ZHEN

Castleark Management LLC

SEC CIK
0001106832
Latest filing
Aug 14, 2026

Holdings in Q2 2021

Holdings as of Jun 30, 2021, filed Aug 17, 2021. Long positions only; changes compare share counts with Q1 2021.

Institution overview
Positions
335
+5 vs. Q1 2021
Portfolio value
$2.98B
+$199.7M (+7.2%) vs. Q1 2021
Filed
Aug 17, 2021
SEC
Holdings of Castleark Management LLC in Q2 2021
SecurityClassSharesValue% of portfolioShare changeActionHistory
UAUnder Armour, Inc.CL C1,349$25.0K<0.1%00.0%UnchangedHistory
FFIVF5, Inc.Stock140$26.0K<0.1%00.0%UnchangedHistory
PAYXPaychex IncStock360$39.0K<0.1%00.0%UnchangedHistory
Royal Dutch Shell PLC780259206SPONS ADR A965$39.0K<0.1%−300−23.7%Reduced–
SEESealed Air CorpCOM720$43.0K<0.1%00.0%UnchangedHistory
PRAAPra Group IncCOM1,150$44.0K<0.1%00.0%UnchangedHistory
RPMRPM International IncCOM580$51.0K<0.1%00.0%UnchangedHistory
SRCLStericycle IncCOM770$55.0K<0.1%00.0%UnchangedHistory
MDTMedtronic plcStock480$60.0K<0.1%00.0%UnchangedHistory
NFENew Fortress Energy Inc.COM CL A1,625$62.0K<0.1%−12,580−88.6%ReducedHistory
EATBrinker International, IncStock1,090$67.0K<0.1%−177,983−99.4%ReducedHistory
WKHSWorkhorse Group Inc.COM NEW4,140$69.0K<0.1%−8,600−67.5%ReducedHistory
MOG.AMoog Inc.CL A860$72.0K<0.1%00.0%UnchangedHistory
SHLSShoals Technologies Group, Inc.CL A2,380$84.0K<0.1%−4,900−67.3%ReducedHistory
SYKStryker CorpStock340$88.0K<0.1%00.0%UnchangedHistory
COUPCoupa Software IncCOM455$119.0K<0.1%00.0%UnchangedHistory
GOOGLAlphabet Inc.Stock50$122.0K<0.1%00.0%UnchangedHistory
INTCIntel CorpStock2,200$124.0K<0.1%00.0%UnchangedHistory
BPBP PLCADR5,010$132.0K<0.1%−1,800−26.4%ReducedHistory
APOApollo Global Management, Inc.COM CL A2,125$132.0K<0.1%00.0%UnchangedHistory
NBIXNeurocrine Biosciences IncStock1,405$137.0K<0.1%00.0%UnchangedHistory
SGENSeagen Inc.COM865$137.0K<0.1%00.0%UnchangedHistory
INCYIncyte CorpCOM1,660$140.0K<0.1%00.0%UnchangedHistory
VRTXVertex Pharmaceuticals IncStock730$147.0K<0.1%00.0%UnchangedHistory
RGENRepligen CorpCOM750$150.0K<0.1%00.0%UnchangedHistory
iShares Russell 2000 Growth ETF464287648ETF500$156.0K<0.1%00.0%Unchanged–
CHDChurch & Dwight Co IncCOM1,825$156.0K<0.1%00.0%UnchangedHistory
PTONPeloton Interactive, Inc.CL A COM1,325$164.0K<0.1%00.0%UnchangedHistory
ITWIllinois Tool Works IncStock770$172.0K<0.1%00.0%UnchangedHistory
First Tr Exchange-Traded FD33736G106GBL WND ENRG ETF8,042$173.0K<0.1%−16,760−67.6%Reduced–
RUNSunrun Inc.COM3,110$173.0K<0.1%−112,323−97.3%ReducedHistory
TRMBTrimble Inc.COM2,160$177.0K<0.1%00.0%UnchangedHistory
FASTFastenal CoStock3,460$180.0K<0.1%00.0%UnchangedHistory
CSGPCostar Group, Inc.COM2,550$211.0K<0.1%00.0%UnchangedConverted for a 10-for-1 splitHistory
FISVFiserv IncStock2,000$214.0K<0.1%00.0%UnchangedHistory
REGIRenewable Energy Group, Inc.COM NEW3,430$214.0K<0.1%−7,110−67.5%ReducedHistory
OKTAOkta, Inc.CL A925$226.0K<0.1%00.0%UnchangedHistory
TTDTrade Desk, Inc.Stock3,000$232.0K<0.1%−1,100−26.8%ReducedConverted for a 10-for-1 splitHistory
Invesco Exch Traded FD Tr II46138G706SOLAR ETF2,720$243.0K<0.1%−5,700−67.7%Reduced–
PODDInsulet CorpStock915$251.0K<0.1%00.0%UnchangedHistory
PFEPfizer IncStock6,500$255.0K<0.1%00.0%UnchangedHistory
BHPBHP Group LtdADR3,580$261.0K<0.1%−7,470−67.6%ReducedHistory
MKTXMarketaxess Holdings IncCOM570$264.0K<0.1%00.0%UnchangedHistory
CHGGChegg, IncCOM3,215$267.0K<0.1%00.0%UnchangedHistory
ALBAlbemarle CorpStock1,620$273.0K<0.1%−3,440−68.0%ReducedHistory
CTASCintas CorpStock740$283.0K<0.1%00.0%UnchangedHistory
GNTXGentex CorpCOM8,620$285.0K<0.1%00.0%UnchangedHistory
BLDPBallard Power Systems Inc.COM16,390$297.0K<0.1%−34,250−67.6%ReducedHistory
FDXFedEx CorpStock1,000$298.0K<0.1%00.0%UnchangedHistory
XPOXPO, Inc.COM2,180$305.0K<0.1%+2,180NewHistory
PANWPalo Alto Networks IncStock860$319.0K<0.1%+860NewHistory
TSCOTractor Supply CoCOM1,735$323.0K<0.1%+710+69.3%AddedHistory
DARDarling Ingredients Inc.COM4,800$324.0K<0.1%−190,910−97.5%ReducedHistory
URIUnited Rentals, Inc.COM1,030$329.0K<0.1%+1,030NewHistory
TTWOTake Two Interactive Software IncCOM1,880$333.0K<0.1%00.0%UnchangedHistory
NDSNNordson CorpCOM1,520$334.0K<0.1%00.0%UnchangedHistory
MDBMongoDB, Inc.CL A930$336.0K<0.1%00.0%UnchangedHistory
CMGChipotle Mexican Grill IncCOM220$341.0K<0.1%00.0%UnchangedHistory
PCARPaccar IncCOM3,850$344.0K<0.1%00.0%UnchangedHistory
TERTeradyne, IncStock2,605$349.0K<0.1%00.0%UnchangedHistory
DISWalt Disney CoStock2,000$352.0K<0.1%00.0%UnchangedHistory
SMGScotts Miracle-Gro CoStock1,840$353.0K<0.1%00.0%UnchangedHistory
TRUTransUnionCOM3,320$365.0K<0.1%00.0%UnchangedHistory
ISRGIntuitive Surgical IncCOM NEW400$368.0K<0.1%00.0%UnchangedHistory
KOCoca Cola CoStock6,820$369.0K<0.1%00.0%UnchangedHistory
SEDGSolaredge Technologies, Inc.COM1,340$370.0K<0.1%−2,830−67.9%ReducedHistory
RIORio Tinto PLCADR4,570$383.0K<0.1%−6,900−60.2%ReducedHistory
PLUGPlug Power IncStock11,310$387.0K<0.1%−206,295−94.8%ReducedHistory
NSNuStar Energy L.P.UNIT COM21,720$392.0K<0.1%00.0%UnchangedHistory
PAYCPaycom Software, Inc.Stock1,080$393.0K<0.1%00.0%UnchangedHistory
VEEVVeeva Systems IncStock1,295$403.0K<0.1%00.0%UnchangedHistory
DOCUDocuSign, Inc.Stock1,450$405.0K<0.1%00.0%UnchangedHistory
ROKRockwell Automation, IncStock1,420$406.0K<0.1%00.0%UnchangedHistory
ASNDAscendis Pharma A/SSPONSORED ADR3,095$407.0K<0.1%00.0%UnchangedHistory
NEENextera Energy IncStock5,640$413.0K<0.1%−11,720−67.5%ReducedHistory
CATCaterpillar IncStock1,940$422.0K<0.1%−4,010−67.4%ReducedHistory
Atlantica Sustainable Infr PG0751N103SHS11,430$425.0K<0.1%−7,800−40.6%Reduced–
IDXXIDEXX Laboratories IncCOM705$445.0K<0.1%00.0%UnchangedHistory
TTTrane Technologies plcSHS2,445$450.0K<0.1%00.0%UnchangedHistory
XIFRXPLR Infrastructure, LPCOM UNIT PART IN6,010$459.0K<0.1%−4,900−44.9%ReducedHistory
ALGNAlign Technology IncCOM780$477.0K<0.1%00.0%UnchangedHistory
TTETotalEnergies SESPONSORED ADS10,735$486.0K<0.1%−3,900−26.6%ReducedHistory
TDGTransDigm Group INCCOM770$498.0K<0.1%00.0%UnchangedHistory
CMICummins IncStock2,060$502.0K<0.1%−3,600−63.6%ReducedHistory
BWABorgwarner IncCOM10,340$502.0K<0.1%00.0%UnchangedHistory
PGProcter & Gamble CoStock3,800$513.0K<0.1%00.0%UnchangedHistory
SBUXStarbucks CorpStock4,620$517.0K<0.1%00.0%UnchangedHistory
KEYSKeysight Technologies, Inc.Stock3,350$517.0K<0.1%00.0%UnchangedHistory
HESMHess Midstream LPCL A SHS21,045$531.0K<0.1%00.0%UnchangedHistory
ENBEnbridge IncStock13,290$532.0K<0.1%00.0%UnchangedHistory
SIVBSVB Financial GroupCOM970$540.0K<0.1%−210−17.8%ReducedHistory
KLACKLA CorpCOM NEW1,825$592.0K<0.1%00.0%UnchangedHistory
ZBRAZebra Technologies CorpCL A1,125$596.0K<0.1%00.0%UnchangedHistory
GILDGilead Sciences, Inc.Stock8,850$609.0K<0.1%00.0%UnchangedHistory
RACEFerrari N.V.COM3,050$628.0K<0.1%00.0%UnchangedHistory
GTESGates Industrial Corp Ltd.ORD SHS35,860$648.0K<0.1%+35,860NewHistory
TEAMAtlassian CorpCL A2,595$667.0K<0.1%00.0%UnchangedHistory
QTNTQuotient LtdSHS194,600$708.0K<0.1%−87,900−31.1%ReducedHistory
CMECME Group Inc.COM3,400$723.0K<0.1%00.0%UnchangedHistory
BIDUBaidu, Inc.ADR3,670$748.0K<0.1%+3,670NewHistory

Sold out since Q1 2021 (37)

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

Positions of Castleark Management LLC sold out since Q1 2021
SecurityClassShares in Q1 2021Value in Q1 2021% of portfolio in Q1 2021History
CPCanadian Pacific Kansas City LtdCOM88,613$33.6M1.2%History
KSUKansas City SouthernCOM NEW98,350$26.0M0.9%History
NOWServiceNow, Inc.Stock49,202$24.6M0.9%History
TKRTimken CoCOM140,046$11.4M0.4%History
NUANNuance Communications, Inc.COM257,648$11.2M0.4%History
VCYTVeracyte, Inc.COM208,257$11.2M0.4%History
MGNIMagnite, Inc.COM245,191$10.2M0.4%History
ROCKGibraltar Industries, Inc.COM107,484$9.84M0.4%History
EGHT8X8 IncCOM264,105$8.57M0.3%History
Sailpoint Technologies Holdings, Inc.78781P105COM160,539$8.13M0.3%–
OCULOcular Therapeutix, IncCOM485,837$7.97M0.3%History
TPTXTurning Point Therapeutics, Inc.COM77,132$7.30M0.3%History
INSMINSMED IncCOM PAR $.01209,103$7.12M0.3%History
BWINBaldwin Insurance Group, Inc.COM CL A235,474$6.42M0.2%History
RMBSRambus IncCOM318,055$6.18M0.2%History
CLNEClean Energy Fuels Corp.COM387,695$5.33M0.2%History
AQUAEvoqua Water Technologies Corp.COM198,080$5.21M0.2%History
PACBPacific Biosciences of California, Inc.COM141,100$4.70M0.2%History
WKCWorld Kinect CorpCOM131,665$4.63M0.2%History
HYFMHydrofarm Holdings Group, Inc.COM75,900$4.58M0.2%History
LADLithia Motors IncCOM9,174$3.58M0.1%History
QRVOQorvo, Inc.Stock13,830$2.53M0.1%History
TUPTupperware Brands CorpCOM91,990$2.43M0.1%History
GHGuardant Health, Inc.COM13,898$2.12M0.1%History
DKNGDraftKings Inc.COM CL A34,470$2.11M0.1%History
DMTKDermTech, Inc.COM41,330$2.10M0.1%History
LTHMLivent Corp.COM113,185$1.96M0.1%History
PENNPENN Entertainment, Inc.COM18,473$1.94M0.1%History
NVAXNovavax IncCOM NEW8,100$1.47M0.1%History
UPLDUpland Software, Inc.COM26,900$1.27M<0.1%History
Noble Midstream Partners LP65506L105COM UNIT REPST78,446$1.14M<0.1%–
MRVLMarvell Technology, Inc.ORD18,160$889.0K<0.1%History
EDUNew Oriental Education & Technology Group Inc.SPON ADR37,800$529.0K<0.1%History
DHIHorton D R IncCOM5,700$508.0K<0.1%History
KMIKinder Morgan, Inc.Stock26,560$442.0K<0.1%History
Varian Med Sys Inc92220P105COM650$115.0K<0.1%–
ORLYO Reilly Automotive IncStock160$81.0K<0.1%History