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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
FCXFreeport-McMoran IncStock20,330$754.0K<0.1%−26,550−56.6%ReducedHistory
STESTERIS plcSHS USD3,740$772.0K<0.1%−775−17.2%ReducedHistory
GDSGDS Holdings LtdSPONSORED ADS9,840$772.0K<0.1%+1,650+20.1%AddedHistory
ETRNMidstream Co LLCCOM91,073$775.0K<0.1%−57,200−38.6%ReducedHistory
PTENPatterson Uti Energy IncCOM80,130$796.0K<0.1%+80,130NewHistory
CLVTClarivate PLCORD SHS30,150$830.0K<0.1%+9,170+43.7%AddedHistory
OKEONEOK IncCOM15,085$839.0K<0.1%00.0%UnchangedHistory
GOOGAlphabet Inc.Stock350$877.0K<0.1%00.0%UnchangedHistory
LECOLincoln Electric Holdings IncCOM6,700$882.0K<0.1%00.0%UnchangedHistory
WMBWilliams Companies, Inc.COM34,210$908.0K<0.1%00.0%UnchangedHistory
SAFMSanderson Farms IncCOM4,875$916.0K<0.1%−5,905−54.8%ReducedHistory
TJXTJX Companies IncStock13,680$922.0K<0.1%00.0%UnchangedHistory
JBHTHunt J B Transport Services IncCOM5,660$922.0K<0.1%00.0%UnchangedHistory
HDBHDFC Bank LtdSPONSORED ADS12,620$923.0K<0.1%+2,400+23.5%AddedHistory
MROMarathon Oil CorpCOM71,265$971.0K<0.1%−25,600−26.4%ReducedHistory
QCOMQualcomm IncStock6,950$993.0K<0.1%00.0%UnchangedHistory
PAGSPagSeguro Digital Ltd.COM CL A18,570$1.04M<0.1%00.0%UnchangedHistory
PBRPetrobras - Petroleo Brasileiro SASPONSORED ADR85,237$1.04M<0.1%−30,600−26.4%ReducedHistory
ESTCElastic N.V.ORD SHS7,465$1.09M<0.1%−6,880−48.0%ReducedHistory
RTLRRattler Midstream LPCOM UNITS100,065$1.09M<0.1%+46,120+85.5%AddedHistory
COSTCostco Wholesale CorpStock2,800$1.11M<0.1%00.0%UnchangedHistory
APAAPA CorpStock51,270$1.11M<0.1%−18,400−26.4%ReducedHistory
SESea LtdSPONSORD ADS4,375$1.20M<0.1%−1,000−18.6%ReducedHistory
FIVNFive9, Inc.COM6,618$1.21M<0.1%−1,100−14.3%ReducedHistory
CLRContinental Resources, IncCOM33,055$1.26M<0.1%−11,900−26.5%ReducedHistory
Arco Platform LtdG04553106COM CL A41,805$1.28M<0.1%−8,720−17.3%Reduced–
LNGCheniere Energy, Inc.COM NEW14,806$1.28M<0.1%−12,240−45.3%ReducedHistory
ENPHEnphase Energy, Inc.Stock7,135$1.31M<0.1%−26,720−78.9%ReducedHistory
PSXPhillips 66Stock15,400$1.32M<0.1%−5,500−26.3%ReducedHistory
KBRKBR, Inc.COM36,665$1.40M<0.1%+36,665NewHistory
CQPCheniere Energy Partners, L.P.COM UNIT32,134$1.42M<0.1%00.0%UnchangedHistory
AMAntero Midstream CorpStock148,710$1.54M0.1%00.0%UnchangedHistory
MIDDMIDDLEBY CorpCOM9,260$1.60M0.1%+9,260NewHistory
HALHalliburton CoStock72,500$1.68M0.1%−26,100−26.5%ReducedHistory
HUBSHubSpot IncCOM3,030$1.77M0.1%−510−14.4%ReducedHistory
ANSSAnsys IncCOM5,160$1.79M0.1%00.0%UnchangedHistory
iShares Russell Mid-Cap Growth ETF464287481ETF16,000$1.81M0.1%+5,000+45.5%Added–
XOMExxonMobil Holdings CorpCOM29,350$1.85M0.1%−10,600−26.5%ReducedHistory
SUSuncor Energy IncStock78,980$1.89M0.1%−28,400−26.4%ReducedHistory
GELGenesis Energy LPUNIT LTD PARTN164,810$1.91M0.1%+164,810NewHistory
ALLEAllegion plcORD SHS13,755$1.92M0.1%+13,755NewHistory
DCPDCP Midstream, LPCOM UT LTD PTN63,600$1.95M0.1%+22,950+56.5%AddedHistory
HESHess CorpStock22,920$2.00M0.1%−8,200−26.3%ReducedHistory
State Street Energy Select Sector SPDR ETF81369Y506ETF37,350$2.01M0.1%−13,400−26.4%Reduced–
ACMAecomCOM32,650$2.07M0.1%+325+1.0%AddedHistory
TSMTaiwan Semiconductor Manufacturing Co LtdADR18,010$2.16M0.1%00.0%UnchangedHistory
AEMAgnico Eagle Mines LtdStock37,500$2.27M0.1%00.0%UnchangedHistory
VNOMViper Energy, Inc.COM UNT RP INT120,775$2.27M0.1%00.0%UnchangedHistory
DNLIDenali Therapeutics Inc.COM29,040$2.28M0.1%+29,040NewHistory
PSXPPhillips 66 Partners LPCOM UNIT REP INT61,507$2.43M0.1%00.0%UnchangedHistory
VICRVicor CorpCOM23,080$2.44M0.1%−540−2.3%ReducedHistory
FRPTFreshpet, Inc.Stock15,222$2.48M0.1%−890−5.5%ReducedHistory
AMBAAmbarella IncSHS23,270$2.48M0.1%−79,760−77.4%ReducedHistory
ONOn Semiconductor CorpStock65,425$2.50M0.1%−31,090−32.2%ReducedHistory
OXYOccidental Petroleum CorpStock81,550$2.55M0.1%−29,300−26.4%ReducedHistory
TRGPTarga Resources Corp.COM57,380$2.55M0.1%+11,240+24.4%AddedHistory
VLOValero Energy CorpStock32,955$2.57M0.1%−5,400−14.1%ReducedHistory
MANHManhattan Associates IncStock18,410$2.67M0.1%+18,410NewHistory
ILMNIllumina, Inc.COM5,670$2.68M0.1%00.0%UnchangedHistory
AVNTAvient CorpCOM55,181$2.71M0.1%−132,615−70.6%ReducedHistory
CGNXCognex CorpCOM32,290$2.71M0.1%−5,420−14.4%ReducedHistory
BBIOBridgeBio Pharma, Inc.COM46,457$2.83M0.1%−60,053−56.4%ReducedHistory
YETIYETI Holdings, Inc.COM31,145$2.86M0.1%−44,120−58.6%ReducedHistory
MMPMagellan Midstream Partners, L.P.COM UNIT RP LP59,188$2.90M0.1%00.0%UnchangedHistory
ICLRIcon PLCCOM14,425$2.98M0.1%+11,865+463.5%AddedHistory
LKQLKQ CorpCOM61,150$3.01M0.1%−17,800−22.5%ReducedHistory
DVNDevon Energy CorpStock106,800$3.12M0.1%+32,850+44.4%AddedHistory
GKOSGLAUKOS CorpCOM36,900$3.13M0.1%+36,900NewHistory
EOGEOG Resources IncStock37,800$3.15M0.1%−13,600−26.5%ReducedHistory
PTCPTC Inc.Stock22,325$3.15M0.1%−3,720−14.3%ReducedHistory
CVXChevron CorpStock30,755$3.22M0.1%−11,100−26.5%ReducedHistory
MANManpowerGroup Inc.COM28,500$3.39M0.1%+28,500NewHistory
AXONAxon Enterprise, Inc.COM19,520$3.45M0.1%−3,270−14.3%ReducedHistory
MPCMarathon Petroleum CorpStock57,254$3.46M0.1%+1,606+2.9%AddedHistory
MSMorgan StanleyStock39,200$3.59M0.1%+39,200NewHistory
LSCCLattice Semiconductor CorpCOM64,265$3.61M0.1%−50,170−43.8%ReducedHistory
APTVAptiv PLCSHS23,025$3.62M0.1%+22,000+2,146.3%AddedHistory
WYNNWynn Resorts LtdCOM29,800$3.65M0.1%+27,600+1,254.5%AddedHistory
HZNPHorizon Therapeutics Public Ltd CoSHS40,410$3.78M0.1%+105+0.3%AddedHistory
AXPAmerican Express CoStock22,975$3.80M0.1%+20,300+758.9%AddedHistory
CDXSCodexis, Inc.COM167,808$3.80M0.1%+23,923+16.6%AddedHistory
FLYYSpirit Aviation Holdings, Inc.COM126,455$3.85M0.1%−94,560−42.8%ReducedHistory
ENTGEntegris IncCOM31,720$3.90M0.1%−5,330−14.4%ReducedHistory
PAAPlains All American Pipeline LPUNIT LTD PARTN343,549$3.90M0.1%00.0%UnchangedHistory
RDNTRadNet, Inc.COM116,555$3.93M0.1%+116,555NewHistory
FANGDiamondback Energy, Inc.Stock42,720$4.01M0.1%−9,290−17.9%ReducedHistory
AGYSAgilysys IncCOM71,456$4.06M0.1%+71,456NewHistory
ARVNArvinas, Inc.COM52,930$4.08M0.1%+52,930NewHistory
BABoeing CoStock17,100$4.10M0.1%+13,700+402.9%AddedHistory
DBIDesigner Brands Inc.CL A258,106$4.27M0.1%+18,355+7.7%AddedHistory
DKSDick's Sporting Goods, Inc.Stock43,040$4.31M0.1%+34,600+410.0%AddedHistory
CDMOAvid Bioservices, Inc.COM171,530$4.40M0.1%+171,530NewHistory
CMCOColumbus McKinnon CorpCOM91,812$4.43M0.1%+91,812NewHistory
FATEFate Therapeutics IncCOM55,628$4.83M0.2%−2,850−4.9%ReducedHistory
CARAvis Budget Group, Inc.COM63,445$4.94M0.2%+63,445NewHistory
PXDPioneer Natural Resources CoCOM30,587$4.97M0.2%−11,000−26.5%ReducedHistory
Vonage Holdings Corp92886T201COM348,050$5.01M0.2%+490+0.1%Added–
DOORMasonite International CorpCOM46,625$5.21M0.2%+46,625NewHistory
TXNTexas Instruments IncStock27,150$5.22M0.2%00.0%UnchangedHistory
ORGOOrganogenesis Holdings Inc.COM319,597$5.31M0.2%+319,597NewHistory

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