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Livermore
Livermore
ZHEN

Castleark Management LLC

SEC CIK
0001106832
Latest filing
Aug 14, 2026

Holdings in Q3 2023

Holdings as of Sep 30, 2023, filed Nov 15, 2023. Long positions only; changes compare share counts with Q2 2023.

Institution overview
Positions
274
0 vs. Q2 2023
Portfolio value
$1.96B
−$245.2M (−11.1%) vs. Q2 2023
Filed
Nov 15, 2023
SEC
Holdings of Castleark Management LLC in Q3 2023
SecurityClassSharesValue% of portfolioShare changeActionHistory
MSFTMicrosoft CorpStock371,940$117.4M6.0%−37,340−9.1%ReducedHistory
AAPLApple Inc.Stock594,305$101.8M5.2%−55,780−8.6%ReducedHistory
NVDANVIDIA CorpStock198,838$86.5M4.4%−20,310−9.3%ReducedHistory
MAMastercard IncStock171,657$68.0M3.5%−15,350−8.2%ReducedHistory
GOOGLAlphabet Inc.Stock514,420$67.3M3.4%−32,310−5.9%ReducedHistory
NOWServiceNow, Inc.Stock109,630$61.3M3.1%−9,910−8.3%ReducedHistory
AMZNAmazon Com IncStock442,850$56.3M2.9%+58,150+15.1%AddedHistory
METAMeta Platforms, Inc.Stock164,899$49.5M2.5%+10,160+6.6%AddedHistory
State Street Industrial Select Sector SPDR ETF81369Y704ETF447,010$45.3M2.3%00.0%Unchanged–
LLYEli Lilly & CoStock81,085$43.6M2.2%−41,780−34.0%ReducedHistory
VVisa Inc.Stock183,775$42.3M2.2%−16,300−8.1%ReducedHistory
DXCMDexcom IncCOM451,050$42.1M2.1%−2,230−0.5%ReducedHistory
LVSLas Vegas Sands CorpCOM883,409$40.5M2.1%−96,130−9.8%ReducedHistory
LULUlululemon athletica inc.Stock101,048$39.0M2.0%+13,750+15.8%AddedHistory
SLBSLB LimitedStock643,850$37.5M1.9%+340,070+111.9%AddedHistory
SYKStryker CorpStock125,440$34.3M1.7%+3,320+2.7%AddedHistory
LRCXLam Research CorpCOM53,495$33.5M1.7%−5,110−8.7%ReducedHistory
ISRGIntuitive Surgical IncCOM NEW101,980$29.8M1.5%+8,210+8.8%AddedHistory
ADBEAdobe Inc.Stock55,045$28.1M1.4%+18,610+51.1%AddedHistory
ASMLASML Holding NVADR43,310$25.5M1.3%−3,890−8.2%ReducedHistory
iShares Tr464287234MSCI EMG MKT ETF662,100$25.1M1.3%00.0%Unchanged–
iShares MSCI Eafe ETF464287465ETF364,410$25.1M1.3%00.0%Unchanged–
SPDR Series Trust78468R556SP O&G EXPL PRO160,370$23.7M1.2%−990−0.6%Reduced–
MSCIMSCI Inc.Stock36,465$18.7M1.0%−3,360−8.4%ReducedHistory
DEDeere & CoStock36,770$13.9M0.7%−3,320−8.3%ReducedHistory
AMDAdvanced Micro Devices IncStock134,740$13.9M0.7%+54,630+68.2%AddedHistory
SPDR Series Trust78464A714ST STR SP RETAIL221,940$13.5M0.7%00.0%Unchanged–
iShares Inc46434G822MSCI JAPAN ETF222,650$13.4M0.7%00.0%Unchanged–
FTITechnipFMC plcCOM613,760$12.5M0.6%+87,520+16.6%AddedHistory
BABoeing CoStock53,620$10.3M0.5%+26,980+101.3%AddedHistory
APGAPi Group CorpCOM STK395,743$10.3M0.5%−19,560−4.7%ReducedHistory
State Street SPDR S&P Homebuilders ETF78464A888ETF132,200$10.1M0.5%00.0%Unchanged–
MANHManhattan Associates IncStock48,200$9.53M0.5%−520−1.1%ReducedHistory
RMBSRambus IncCOM168,760$9.42M0.5%+19,060+12.7%AddedHistory
UNHUnitedHealth Group IncStock18,080$9.12M0.5%−21,830−54.7%ReducedHistory
XOMExxonMobil Holdings CorpCOM77,480$9.11M0.5%−31,950−29.2%ReducedHistory
ALGNAlign Technology IncCOM29,300$8.95M0.5%−2,530−7.9%ReducedHistory
SMCISuper Micro Computer, Inc.COM32,320$8.86M0.5%−3,540−9.9%ReducedHistory
CELHCelsius Holdings, Inc.COM NEW50,900$8.73M0.4%−33,450−39.7%ReducedHistory
MSMorgan StanleyStock105,960$8.65M0.4%00.0%UnchangedHistory
PSNParsons CorpCOM157,700$8.57M0.4%+27,940+21.5%AddedHistory
ATIAti IncStock206,700$8.51M0.4%−41,530−16.7%ReducedHistory
RIORio Tinto PLCADR130,970$8.33M0.4%+128,190+4,611.2%AddedHistory
PNRPENTAIR plcSHS121,780$7.89M0.4%−1,310−1.1%ReducedHistory
TJXTJX Companies IncStock87,660$7.79M0.4%+73,980+540.8%AddedHistory
BCOBrinks CoCOM106,440$7.73M0.4%−1,160−1.1%ReducedHistory
GTLSChart Industries IncCOM44,970$7.61M0.4%+44,970NewHistory
JPMJPMorgan Chase & CoStock51,730$7.50M0.4%00.0%UnchangedHistory
FLYWFlywire CorpCOM VTG224,690$7.17M0.4%−2,430−1.1%ReducedHistory
DODiamond Offshore Drilling, Inc.COM486,610$7.14M0.4%+486,610NewHistory
TTEKTetra Tech IncCOM46,050$7.00M0.4%+4,550+11.0%AddedHistory
MYRGMyr Group Inc.COM51,250$6.91M0.4%+3,100+6.4%AddedHistory
PCORProcore Technologies, Inc.COM104,420$6.82M0.3%+104,420NewHistory
CLSCelestica IncSUB VTG SHS275,370$6.75M0.3%+275,370NewHistory
EVREvercore Inc.CLASS A48,260$6.65M0.3%+48,260NewHistory
CXTCrane NXT, Co.COM118,650$6.59M0.3%+42,580+56.0%AddedHistory
iShares MSCI Acwi Ex U.S. ETF464288240ETF139,850$6.57M0.3%00.0%Unchanged–
SAIASaia IncCOM16,440$6.55M0.3%−190−1.1%ReducedHistory
VRNSVaronis Systems IncCOM213,330$6.52M0.3%+49,010+29.8%AddedHistory
ONTOOnto Innovation Inc.COM50,840$6.48M0.3%+13,180+35.0%AddedHistory
IBPInstalled Building Products, Inc.COM50,450$6.30M0.3%−550−1.1%ReducedHistory
MEDPMedpace Holdings, Inc.COM25,780$6.24M0.3%+13,800+115.2%AddedHistory
FIXComfort Systems USA IncCOM36,140$6.16M0.3%−400−1.1%ReducedHistory
OPCHOption Care Health, Inc.COM NEW190,260$6.15M0.3%+190,260NewHistory
SUMSummit Materials, Inc.CL A197,396$6.15M0.3%−12,050−5.8%ReducedHistory
TREXTrex Co IncCOM97,390$6.00M0.3%+8,560+9.6%AddedHistory
XPOXPO, Inc.COM79,620$5.94M0.3%−850−1.1%ReducedHistory
CHXChampionX CorpCOM166,360$5.93M0.3%−1,800−1.1%ReducedHistory
LNWOLight & Wonder, Inc.COM81,410$5.81M0.3%+81,410NewHistory
RELYRemitly Global, Inc.COM228,010$5.75M0.3%+228,010NewHistory
STRLSterling Infrastructure, Inc.COM77,684$5.71M0.3%−26,580−25.5%ReducedHistory
ARAntero Resources CorpCOM222,480$5.65M0.3%+222,480NewHistory
HASHasbro, Inc.COM84,480$5.59M0.3%+84,480NewHistory
CWANClearwater Analytics Holdings, Inc.CL A288,590$5.58M0.3%+288,590NewHistory
YELPYelp IncCL A133,260$5.54M0.3%+133,260NewHistory
WWDWoodward, Inc.COM44,540$5.53M0.3%−470−1.0%ReducedHistory
GKOSGLAUKOS CorpCOM72,320$5.44M0.3%+72,320NewHistory
PHMPultegroup IncCOM73,060$5.41M0.3%−44,340−37.8%ReducedHistory
DVDoubleVerify Holdings, Inc.COM193,080$5.40M0.3%−28,400−12.8%ReducedHistory
CMPRCIMPRESS plcSHS EURO76,510$5.36M0.3%+76,510NewHistory
FRSHFreshworks Inc.Stock267,520$5.33M0.3%+267,520NewHistory
ETEnergy Transfer LPCOM UT LTD PTN378,840$5.32M0.3%00.0%UnchangedHistory
PENGPenguin Solutions, Inc.SHS214,930$5.23M0.3%+214,930NewHistory
ZWSZurn Elkay Water Solutions CorpCOM186,738$5.23M0.3%+186,738NewHistory
EHCEncompass Health CorpCOM77,070$5.18M0.3%+77,070NewHistory
ACVAACV Auctions Inc.COM CL A340,268$5.17M0.3%−3,690−1.1%ReducedHistory
HQYHealthequity, Inc.COM70,690$5.16M0.3%+70,690NewHistory
COCOVita Coco Company, Inc.COM196,297$5.11M0.3%+34,760+21.5%AddedHistory
HURNHuron Consulting Group Inc.Stock48,820$5.09M0.3%−23,960−32.9%ReducedHistory
THCTenet Healthcare CorpCOM NEW76,380$5.03M0.3%−840−1.1%ReducedHistory
FNFabrinetSHS30,200$5.03M0.3%+18,090+149.4%AddedHistory
TENBTenable Holdings, Inc.COM112,190$5.03M0.3%+15,480+16.0%AddedHistory
VCELVericel CorpCOM148,160$4.97M0.3%+18,270+14.1%AddedHistory
BRBRBellring Brands, Inc.Stock119,870$4.94M0.3%−60,090−33.4%ReducedHistory
WIXWix.com Ltd.SHS53,790$4.94M0.3%−550−1.0%ReducedHistory
ATECAlphatec Holdings, Inc.COM NEW376,370$4.88M0.2%−4,220−1.1%ReducedHistory
HALOHalozyme Therapeutics, Inc.COM127,750$4.88M0.2%+127,750NewHistory
APPFAppfolio IncCOM CL A26,710$4.88M0.2%+26,710NewHistory
ORCLOracle CorpStock46,040$4.88M0.2%−46,030−50.0%ReducedHistory
ALTRAltair Engineering Inc.COM CL A77,950$4.88M0.2%+23,570+43.3%AddedHistory

Sold out since Q2 2023 (55)

Positions held at the end of Q2 2023 that are gone from this filing.

Positions of Castleark Management LLC sold out since Q2 2023
SecurityClassShares in Q2 2023Value in Q2 2023% of portfolio in Q2 2023History
ELEstee Lauder Companies IncCL A113,210$22.2M1.0%History
State Street SPDR S&P Biotech ETF78464A870ETF143,110$11.9M0.5%–
TMDXTransMedics Group, Inc.COM132,535$11.1M0.5%History
INSPInspire Medical Systems, Inc.COM32,190$10.5M0.5%History
WINGWingstop Inc.COM49,400$9.89M0.4%History
iShares U.S. Medical Devices ETF464288810ETF157,940$8.92M0.4%–
MTZMastec IncCOM61,080$7.21M0.3%History
FIVEFive Below, IncCOM35,910$7.06M0.3%History
AXTAAxalta Coating Systems Ltd.COM207,940$6.82M0.3%History
FOURShift4 Payments, Inc.CL A94,140$6.39M0.3%History
POWIPower Integrations IncCOM65,660$6.22M0.3%History
CRNCCerence Inc.COM211,553$6.18M0.3%History
FBINFortune Brands Innovations, Inc.COM84,710$6.09M0.3%History
OIO-I Glass, Inc.COM280,760$5.99M0.3%History
MMSIMerit Medical Systems IncCOM71,390$5.97M0.3%History
MGNIMagnite, Inc.COM409,820$5.59M0.3%History
KRTXKaruna Therapeutics, Inc.COM24,706$5.36M0.2%History
KBHKB HomeCOM102,640$5.31M0.2%History
INDIindie Semiconductor, Inc.CLASS A COM558,670$5.25M0.2%History
ACMAecomCOM60,580$5.13M0.2%History
LOPEGrand Canyon Education, Inc.COM49,490$5.11M0.2%History
COTYCoty Inc.COM CL A399,130$4.91M0.2%History
CBZCBIZ, Inc.COM90,730$4.83M0.2%History
BCBrunswick CorpCOM53,130$4.60M0.2%History
MKSIMKS IncCOM41,530$4.49M0.2%History
TPRTapestry, Inc.COM103,700$4.44M0.2%History
HCSGHealthcare Services Group IncCOM289,310$4.32M0.2%History
SIXSix Flags Entertainment CorpCOM165,500$4.30M0.2%History
NEONeogenomics IncCOM NEW262,507$4.22M0.2%History
SWAVShockwave Medical, Inc.COM13,680$3.90M0.2%History
CRSRCorsair Gaming, Inc.COM219,020$3.89M0.2%History
DGIIDigi International IncCOM97,110$3.83M0.2%History
APLSApellis Pharmaceuticals, Inc.COM40,820$3.72M0.2%History
XENEXenon Pharmaceuticals Inc.COM94,490$3.64M0.2%History
PERIPerion Network Ltd.SHS NEW115,860$3.55M0.2%History
TXG10x Genomics, Inc.CL A COM61,310$3.42M0.2%History
BDCBelden Inc.COM35,200$3.37M0.2%History
GNRCGenerac Holdings Inc.Stock22,280$3.32M0.2%History
CHDNChurchill Downs IncCOM23,430$3.26M0.1%History
RVNCRevance Therapeutics, Inc.COM125,727$3.18M0.1%History
TMCITreace Medical Concepts, Inc.COM123,780$3.17M0.1%History
ARWRArrowhead Pharmaceuticals, Inc.COM85,690$3.06M0.1%History
WYNNWynn Resorts LtdCOM27,400$2.89M0.1%History
EXPOExponent IncCOM27,220$2.54M0.1%History
TGTXTG Therapeutics, Inc.COM90,980$2.26M0.1%History
MDGLMadrigal Pharmaceuticals, Inc.COM9,560$2.21M0.1%History
MMPMagellan Midstream Partners, L.P.COM UNIT RP LP30,638$1.91M0.1%History
PDCEPDC Energy, Inc.COM22,450$1.60M0.1%History
WCCWesco International IncCOM8,739$1.56M0.1%History
HAEHaemonetics CorpCOM12,610$1.07M<0.1%History
RHRHCOM3,210$1.06M<0.1%History
SWKSSkyworks Solutions, Inc.Stock3,290$364.2K<0.1%History
SPLKSplunk IncCOM3,160$335.2K<0.1%History
SMARSmartsheet IncCOM CL A6,230$238.4K<0.1%History
ENBEnbridge IncStock5,970$221.8K<0.1%History