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Livermore
Livermore
ZHEN

Castleark Management LLC

SEC CIK
0001106832
Latest filing
Aug 14, 2026

Holdings in Q1 2023

Holdings as of Mar 31, 2023, filed May 16, 2023. Long positions only; changes compare share counts with Q4 2022.

Institution overview
Positions
272
−10 vs. Q4 2022
Portfolio value
$2.04B
+$121.3M (+6.3%) vs. Q4 2022
Filed
May 16, 2023
SEC
Holdings of Castleark Management LLC in Q1 2023
SecurityClassSharesValue% of portfolioShare changeActionHistory
AAPLApple Inc.Stock652,625$107.6M5.3%−6,235−0.9%ReducedHistory
MSFTMicrosoft CorpStock296,600$85.5M4.2%−15,860−5.1%ReducedHistory
MAMastercard IncStock205,677$74.7M3.7%−3,120−1.5%ReducedHistory
NVDANVIDIA CorpStock218,608$60.7M3.0%+89,060+68.7%AddedHistory
GOOGLAlphabet Inc.Stock545,340$56.6M2.8%−8,340−1.5%ReducedHistory
VVisa Inc.Stock250,765$56.5M2.8%−3,715−1.5%ReducedHistory
LVSLas Vegas Sands CorpCOM976,939$56.1M2.8%−14,870−1.5%ReducedHistory
NOWServiceNow, Inc.Stock119,240$55.4M2.7%+16,040+15.5%AddedHistory
DXCMDexcom IncCOM452,150$52.5M2.6%+50,520+12.6%AddedHistory
iShares Tr464287234MSCI EMG MKT ETF1,322,210$52.2M2.6%+149,460+12.7%Added–
NKENIKE, Inc.Stock378,180$46.4M2.3%+181,335+92.1%AddedHistory
State Street Industrial Select Sector SPDR ETF81369Y704ETF447,010$45.2M2.2%+447,010New–
LLYEli Lilly & CoStock122,575$42.1M2.1%−1,900−1.5%ReducedHistory
UNHUnitedHealth Group IncStock89,000$42.1M2.1%−1,350−1.5%ReducedHistory
ULTAUlta Beauty, Inc.Stock70,580$38.5M1.9%−21,475−23.3%ReducedHistory
ELEstee Lauder Companies IncCL A144,400$35.6M1.7%+48,870+51.2%AddedHistory
SLBSLB LimitedStock676,340$33.2M1.6%+77,540+12.9%AddedHistory
TSLATesla, Inc.Stock154,634$32.1M1.6%−2,280−1.5%ReducedHistory
ASMLASML Holding NVADR47,070$32.0M1.6%−710−1.5%ReducedHistory
LRCXLam Research CorpCOM58,475$31.0M1.5%−915−1.5%ReducedHistory
PYPLPayPal Holdings, Inc.Stock403,500$30.6M1.5%−6,130−1.5%ReducedHistory
iShares Inc46434G822MSCI JAPAN ETF445,300$26.1M1.3%00.0%Unchanged–
iShares MSCI Eafe ETF464287465ETF364,410$26.1M1.3%+341,400+1,483.7%Added–
XOMExxonMobil Holdings CorpCOM218,410$24.0M1.2%+104,870+92.4%AddedHistory
MSCIMSCI Inc.Stock39,715$22.2M1.1%+9,265+30.4%AddedHistory
SYKStryker CorpStock77,360$22.1M1.1%+77,020+22,652.9%AddedHistory
LULUlululemon athletica inc.Stock52,718$19.2M0.9%−60,660−53.5%ReducedHistory
AMZNAmazon Com IncStock171,090$17.7M0.9%−2,480−1.4%ReducedHistory
DEDeere & CoStock39,990$16.5M0.8%+39,990NewHistory
GLDSPDR Gold TrustETF89,295$16.4M0.8%+20,820+30.4%AddedHistory
ISRGIntuitive Surgical IncCOM NEW58,190$14.9M0.7%−860−1.5%ReducedHistory
State Street SPDR S&P Regional Banking ETF78464A698ETF325,000$14.3M0.7%+67,260+26.1%Added–
ADBEAdobe Inc.Stock32,785$12.6M0.6%−500−1.5%ReducedHistory
UNPUnion Pacific CorpStock54,205$10.9M0.5%−87,890−61.9%ReducedHistory
ATIAti IncStock270,680$10.7M0.5%00.0%UnchangedHistory
WINGWingstop Inc.COM54,890$10.1M0.5%00.0%UnchangedHistory
TMDXTransMedics Group, Inc.COM131,275$9.94M0.5%00.0%UnchangedHistory
APGAPi Group CorpCOM STK419,013$9.42M0.5%+91,060+27.8%AddedHistory
FOURShift4 Payments, Inc.CL A123,870$9.39M0.5%+123,870NewHistory
MSMorgan StanleyStock105,960$9.30M0.5%+86,360+440.6%AddedHistory
INSPInspire Medical Systems, Inc.COM39,450$9.23M0.5%00.0%UnchangedHistory
State Street SPDR S&P Homebuilders ETF78464A888ETF132,200$8.96M0.4%00.0%Unchanged–
SPDR Series Trust78464A714ST STR SP RETAIL137,020$8.69M0.4%−31,070−18.5%Reduced–
AXONAxon Enterprise, Inc.COM38,010$8.55M0.4%−30,610−44.6%ReducedHistory
MANHManhattan Associates IncStock55,060$8.53M0.4%+6,750+14.0%AddedHistory
WCCWesco International IncCOM53,199$8.22M0.4%00.0%UnchangedHistory
WSCWillScot Holdings CorpCOM CL A174,174$8.17M0.4%−74,050−29.8%ReducedHistory
VCVisteon CorpCOM NEW50,020$7.84M0.4%00.0%UnchangedHistory
CELHCelsius Holdings, Inc.COM NEW84,230$7.83M0.4%+8,290+10.9%AddedHistory
PHMPultegroup IncCOM129,580$7.55M0.4%00.0%UnchangedHistory
FIVEFive Below, IncCOM36,240$7.46M0.4%00.0%UnchangedHistory
PLNTPlanet Fitness, Inc.CL A92,850$7.21M0.4%−27,460−22.8%ReducedHistory
MMSMaximus, Inc.COM89,610$7.05M0.3%+89,610NewHistory
COTYCoty Inc.COM CL A584,520$7.05M0.3%+584,520NewHistory
PENPenumbra IncCOM25,230$7.03M0.3%00.0%UnchangedHistory
KBRKBR, Inc.COM125,686$6.92M0.3%−46,850−27.2%ReducedHistory
CHXChampionX CorpCOM254,320$6.90M0.3%+104,160+69.4%AddedHistory
iShares MSCI Acwi Ex U.S. ETF464288240ETF139,850$6.82M0.3%00.0%Unchanged–
WIXWix.com Ltd.SHS67,520$6.74M0.3%+28,480+73.0%AddedHistory
DVDoubleVerify Holdings, Inc.COM223,470$6.74M0.3%−26,240−10.5%ReducedHistory
PDPagerDuty, Inc.COM192,360$6.73M0.3%+78,410+68.8%AddedHistory
LOPEGrand Canyon Education, Inc.COM57,470$6.55M0.3%+57,470NewHistory
MASIMasimo CorpCOM35,240$6.50M0.3%+35,240NewHistory
FLYWFlywire CorpCOM VTG221,360$6.50M0.3%00.0%UnchangedHistory
OIO-I Glass, Inc.COM283,290$6.43M0.3%+283,290NewHistory
ETRNMidstream Co LLCCOM1,098,550$6.35M0.3%00.0%UnchangedHistory
FTITechnipFMC plcCOM463,210$6.32M0.3%+152,870+49.3%AddedHistory
EXLSExlService Holdings, Inc.COM38,760$6.27M0.3%−5,790−13.0%ReducedHistory
ETEnergy Transfer LPCOM UT LTD PTN502,130$6.26M0.3%00.0%UnchangedHistory
IRDMIridium Communications Inc.COM100,290$6.21M0.3%+100,290NewHistory
MTZMastec IncCOM65,430$6.18M0.3%00.0%UnchangedHistory
BRBRBellring Brands, Inc.Stock181,570$6.17M0.3%+54,060+42.4%AddedHistory
TTEKTetra Tech IncCOM41,870$6.15M0.3%+4,780+12.9%AddedHistory
BOXBox IncCL A227,950$6.11M0.3%−51,610−18.5%ReducedHistory
BYDBoyd Gaming CorpCOM94,320$6.05M0.3%+94,320NewHistory
XPOFXponential Fitness, Inc.COM CL A198,469$6.03M0.3%+19,780+11.1%AddedHistory
AXTAAxalta Coating Systems Ltd.COM197,590$5.99M0.3%+197,590NewHistory
FOXFFox Factory Holding CorpCOM49,120$5.96M0.3%+49,120NewHistory
HURNHuron Consulting Group Inc.Stock73,200$5.88M0.3%+7,090+10.7%AddedHistory
KNXKnight-Swift Transportation Holdings Inc.CL A102,900$5.82M0.3%+102,900NewHistory
PIImpinj IncCOM42,665$5.78M0.3%+17,205+67.6%AddedHistory
MODNModel N, Inc.COM170,397$5.70M0.3%+43,094+33.9%AddedHistory
AYXAlteryx, Inc.COM CL A96,830$5.70M0.3%+96,830NewHistory
EXPOExponent IncCOM56,910$5.67M0.3%+56,910NewHistory
TPRTapestry, Inc.COM129,350$5.58M0.3%00.0%UnchangedHistory
HAEHaemonetics CorpCOM66,480$5.50M0.3%−29,950−31.1%ReducedHistory
MPLXMPLX LPCOM UNIT REP LTD158,872$5.47M0.3%+9,540+6.4%AddedHistory
EVHEvolent Health, Inc.CL A168,180$5.46M0.3%+16,570+10.9%AddedHistory
KBHKB HomeCOM135,450$5.44M0.3%+31,100+29.8%AddedHistory
FIXComfort Systems USA IncCOM36,850$5.38M0.3%+5,440+17.3%AddedHistory
BDCBelden Inc.COM61,810$5.36M0.3%00.0%UnchangedHistory
DGIIDigi International IncCOM156,790$5.28M0.3%00.0%UnchangedHistory
BOOTBoot Barn Holdings, Inc.COM68,850$5.28M0.3%+32,240+88.1%AddedHistory
CERTCertara, Inc.COM214,620$5.17M0.3%+214,620NewHistory
ACMAecomCOM61,070$5.15M0.3%−17,660−22.4%ReducedHistory
Barrick Gold Corp067901108COM276,340$5.13M0.3%00.0%Unchanged–
CBZCBIZ, Inc.COM102,970$5.10M0.3%+20,940+25.5%AddedHistory
QRVOQorvo, Inc.Stock50,050$5.08M0.2%00.0%UnchangedHistory
DOCNDigitalOcean Holdings, Inc.COM127,270$4.99M0.2%+127,270NewHistory
AVNTAvient CorpCOM119,640$4.92M0.2%+119,640NewHistory

Sold out since Q4 2022 (62)

Positions held at the end of Q4 2022 that are gone from this filing.

Positions of Castleark Management LLC sold out since Q4 2022
SecurityClassShares in Q4 2022Value in Q4 2022% of portfolio in Q4 2022History
State Street SPDR S&P Biotech ETF78464A870ETF448,640$37.2M1.9%–
iShares Tr464287630RUS 2000 VAL ETF149,530$20.7M1.1%–
State Street Financial Select Sector SPDR ETF81369Y605ETF433,450$14.8M0.8%–
EWEdwards Lifesciences CorpStock181,595$13.5M0.7%History
CALXCalix, IncCOM171,400$11.7M0.6%History
HALOHalozyme Therapeutics, Inc.COM205,680$11.7M0.6%History
ACHCAcadia Healthcare Company, Inc.COM109,780$9.04M0.5%History
KEYKeycorpCOM501,240$8.73M0.5%History
CWSTCasella Waste Systems IncCL A106,150$8.42M0.4%History
AXNXAxonics, Inc.COM124,520$7.79M0.4%History
AQUAEvoqua Water Technologies Corp.COM183,200$7.25M0.4%History
PFGCPerformance Food Group CoCOM115,860$6.77M0.4%History
WWEWorld Wrestling Entertainment, LLCCL A96,280$6.60M0.3%History
NVEENV5 Global, Inc.COM49,474$6.55M0.3%History
FIBKFirst Interstate Bancsystem IncCOM167,826$6.49M0.3%History
NBIXNeurocrine Biosciences IncStock53,600$6.40M0.3%History
HBANHuntington Bancshares IncCOM435,700$6.14M0.3%History
DYDycom Industries IncCOM65,330$6.11M0.3%History
WFCWells Fargo & CompanyStock134,700$5.56M0.3%History
SRPTSarepta Therapeutics, Inc.COM41,440$5.37M0.3%History
AZTAAzenta, Inc.COM88,030$5.13M0.3%History
HRMYHarmony Biosciences Holdings, Inc.COM80,140$4.42M0.2%History
CCSIConsensus Cloud Solutions, Inc.COM80,727$4.34M0.2%History
LNTHLantheus Holdings, Inc.Stock84,850$4.32M0.2%History
CLFDClearfield, Inc.COM45,530$4.29M0.2%History
CHGGChegg, IncCOM167,957$4.24M0.2%History
CUTRCutera IncCOM80,270$3.55M0.2%History
PRVAPrivia Health Group, Inc.COM146,645$3.33M0.2%History
MXLMaxlinear, IncCOM90,922$3.09M0.2%History
CVSACovista Inc.COM84,520$3.00M0.2%History
EXTRExtreme Networks IncCOM163,860$3.00M0.2%History
PRCTPROCEPT BioRobotics CorpCOM67,960$2.82M0.1%History
PTENPatterson Uti Energy IncCOM164,820$2.78M0.1%History
COHRCoherent Corp.COM78,820$2.77M0.1%History
DENDenbury IncCOM30,930$2.69M0.1%History
COPConocoPhillipsStock20,802$2.45M0.1%History
SWAVShockwave Medical, Inc.COM11,359$2.34M0.1%History
SMCISuper Micro Computer, Inc.COM28,305$2.32M0.1%History
ENSGEnsign Group, IncCOM24,470$2.32M0.1%History
PNFPPinnacle Financial Partners, Inc.COM31,380$2.30M0.1%History
STKLSunOpta Inc.COM270,480$2.28M0.1%History
EVRIEveri Holdings Inc.COM143,299$2.06M0.1%History
PNCPNC Financial Services Group, Inc.Stock12,985$2.05M0.1%History
HALHalliburton CoStock52,000$2.05M0.1%History
AEMAgnico Eagle Mines LtdStock37,500$1.95M0.1%History
HPHelmerich & Payne, Inc.COM38,940$1.93M0.1%History
CVXChevron CorpStock10,020$1.80M0.1%History
CTRNCiti Trends IncCOM65,906$1.75M0.1%History
ARAntero Resources CorpCOM56,260$1.74M0.1%History
DVNDevon Energy CorpStock22,595$1.39M0.1%History
CSGPCostar Group, Inc.COM14,840$1.15M0.1%History
MROMarathon Oil CorpCOM39,240$1.06M0.1%History
CRLCharles River Laboratories International, Inc.COM4,220$919.5K<0.1%History
EOGEOG Resources IncStock6,505$842.5K<0.1%History
RRCRange Resources CorpCOM30,460$762.1K<0.1%History
CBOECboe Global Markets, Inc.COM4,910$616.1K<0.1%History
TYLTyler Technologies IncCOM1,770$570.7K<0.1%History
DAVAEndava plcADS7,090$542.4K<0.1%History
UTHRUnited Therapeutics CorpCOM1,850$514.5K<0.1%History
EQTEQT CorpStock14,620$494.6K<0.1%History
STESTERIS plcSHS USD2,560$472.8K<0.1%History
PCTYPaylocity Holding CorpCOM1,570$305.0K<0.1%History