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Livermore
Livermore
ZHEN

Castleark Management LLC

SEC CIK
0001106832
Latest filing
Aug 14, 2026

Holdings in Q1 2026

Holdings as of Mar 31, 2026, filed May 15, 2026. Long positions only; changes compare share counts with Q4 2025.

Institution overview
Positions
292
−2 vs. Q4 2025
Portfolio value
$3.02B
−$384.3M (−11.3%) vs. Q4 2025
Filed
May 15, 2026
SEC
Holdings of Castleark Management LLC in Q1 2026
SecurityClassSharesValue% of portfolioShare changeActionHistory
NVDANVIDIA CorpStock1,258,012$219.4M7.3%−150,134−10.7%ReducedHistory
GOOGLAlphabet Inc.Stock418,019$120.2M4.0%+36,380+9.5%AddedHistory
MSFTMicrosoft CorpStock264,102$97.8M3.2%−105,358−28.5%ReducedHistory
State Street SPDR Portfolio Intermediate Term Corporate Bond ETF78464A375ETF2,688,380$90.2M3.0%+169,010+6.7%Added–
AAPLApple Inc.Stock350,011$88.8M2.9%−37,030−9.6%ReducedHistory
iShares U.S. Treasury Bond ETF46429B267ETF3,329,569$76.3M2.5%00.0%Unchanged–
LRCXLam Research CorpStock336,740$71.9M2.4%−36,136−9.7%ReducedHistory
METAMeta Platforms, Inc.Stock123,965$70.9M2.3%+1,550+1.3%AddedHistory
Vanguard Mortgage-Backed Securities ETF92206C771ETF1,487,800$69.9M2.3%−217,740−12.8%Reduced–
LLYEli Lilly & CoStock73,478$67.6M2.2%−8,100−9.9%ReducedHistory
AVGOBroadcom Inc.Stock202,704$62.7M2.1%−3,176−1.5%ReducedHistory
ANETArista Networks, Inc.Stock430,935$52.9M1.8%+19,658+4.8%AddedHistory
AMZNAmazon Com IncStock245,861$51.2M1.7%−226,288−47.9%ReducedHistory
GILDGilead Sciences, Inc.Stock342,150$47.7M1.6%+64,822+23.4%AddedHistory
SCHWSchwab Charles CorpStock504,053$47.4M1.6%−118,482−19.0%ReducedHistory
VVisa Inc.Stock153,826$46.5M1.5%−16,652−9.8%ReducedHistory
MAMastercard IncStock92,013$46.0M1.5%−10,438−10.2%ReducedHistory
SPDR Series Trust78468R101ST SHO TREAS ETF1,334,080$38.9M1.3%00.0%Unchanged–
SHOPShopify Inc.Stock310,590$36.8M1.2%−34,792−10.1%ReducedHistory
GEVGE Vernova Inc.Stock41,489$36.2M1.2%−6,252−13.1%ReducedHistory
Vanguard Scottsdale FDS92206C813LG-TERM COR BD448,330$33.5M1.1%+211,880+89.6%Added–
NOWServiceNow, Inc.Stock303,756$31.8M1.1%+33,336+12.3%AddedHistory
TPRTapestry, Inc.COM204,470$28.9M1.0%+62,386+43.9%AddedHistory
FANGDiamondback Energy, Inc.Stock145,020$28.7M0.9%+145,020NewHistory
CVXChevron CorpStock136,550$28.3M0.9%+136,550NewHistory
VRTVertiv Holdings CoCOM CL A112,363$28.2M0.9%−12,374−9.9%ReducedHistory
ULTAUlta Beauty, Inc.Stock50,629$26.5M0.9%+688+1.4%AddedHistory
iShares Tr46428865310-20 YR TRS ETF258,432$26.0M0.9%00.0%Unchanged–
ADIAnalog Devices IncStock77,908$24.8M0.8%+16,736+27.4%AddedHistory
BKRBaker Hughes CoCL A387,190$23.6M0.8%+334,110+629.4%AddedHistory
BKNGBooking Holdings Inc.Stock4,896$20.6M0.7%−576−10.5%ReducedHistory
SNOWSnowflake Inc.Stock136,044$20.5M0.7%−15,148−10.0%ReducedHistory
iShares Tr464288588MBS ETF204,235$19.4M0.6%00.0%Unchanged–
RRCRange Resources CorpCOM410,520$18.5M0.6%+336,500+454.6%AddedHistory
AMDAdvanced Micro Devices IncStock88,954$18.1M0.6%−15,792−15.1%ReducedHistory
CFCF Industries Holdings, Inc.COM129,150$16.8M0.6%+129,150NewHistory
DOCNDigitalOcean Holdings, Inc.COM182,249$15.6M0.5%−2,740−1.5%ReducedHistory
ASNDAscendis Pharma A/SSPONSORED ADR67,616$15.5M0.5%+1,280+1.9%AddedHistory
AEISAdvanced Energy Industries IncCOM46,623$15.0M0.5%−2,510−5.1%ReducedHistory
JPMJPMorgan Chase & CoStock50,525$14.9M0.5%+5,890+13.2%AddedHistory
GHGuardant Health, Inc.COM160,283$14.8M0.5%−4,760−2.9%ReducedHistory
TSLATesla, Inc.Stock39,180$14.6M0.5%+11,080+39.4%AddedHistory
TJXTJX Companies IncStock90,620$14.5M0.5%00.0%UnchangedHistory
WMTWalmart Inc.Stock113,270$14.1M0.5%00.0%UnchangedHistory
TSMTaiwan Semiconductor Manufacturing Co LtdADR41,210$13.9M0.5%+4,920+13.6%AddedHistory
iShares Tr464288638ISHS 5-10YR INVT259,994$13.8M0.5%00.0%Unchanged–
NXTNextpower Inc.Stock114,074$13.8M0.5%+8,590+8.1%AddedHistory
PRPermian Resources CorpCLASS A COM630,980$13.5M0.4%+630,980NewHistory
FCFSFirstCash Holdings, Inc.COM70,730$13.3M0.4%+9,530+15.6%AddedHistory
MCHPMicrochip Technology IncStock204,874$13.2M0.4%−310,620−60.3%ReducedHistory
VIAVViavi Solutions Inc.COM378,597$12.6M0.4%+29,227+8.4%AddedHistory
EQTEQT CorpStock193,845$12.3M0.4%−11,920−5.8%ReducedHistory
UBERUber Technologies, IncStock169,876$12.2M0.4%−139,260−45.0%ReducedHistory
iShares Tr46428743220 YR TR BD ETF137,270$11.9M0.4%+42,730+45.2%Added–
DYDycom Industries IncCOM32,506$11.0M0.4%−5,660−14.8%ReducedHistory
XOMExxonMobil Holdings CorpCOM64,460$10.9M0.4%+64,460NewHistory
BTSGBrightSpring Health Services, Inc.COM247,200$10.5M0.3%+88,600+55.9%AddedHistory
HLIOHelios Technologies, Inc.COM160,409$10.4M0.3%+13,660+9.3%AddedHistory
State Street SPDR S&P Biotech ETF78464A870ETF80,890$10.3M0.3%00.0%Unchanged–
CATCaterpillar IncStock13,920$9.86M0.3%00.0%UnchangedHistory
LGNDLigand Pharmaceuticals IncCOM NEW48,696$9.72M0.3%−18,040−27.0%ReducedHistory
WMBWilliams Companies, Inc.COM131,770$9.59M0.3%+6,040+4.8%AddedHistory
ESIElement Solutions IncCOM273,884$9.35M0.3%+10,380+3.9%AddedHistory
FTITechnipFMC plcCOM135,176$9.34M0.3%−65,710−32.7%ReducedHistory
TSEMTower Semiconductor LtdSHS NEW53,240$9.34M0.3%+53,240NewHistory
VSECVse CorpCOM50,086$9.24M0.3%+17,430+53.4%AddedHistory
JAZZJazz Pharmaceuticals plcSHS USD48,740$9.21M0.3%+48,740NewHistory
FIVEFive Below, IncCOM40,110$9.16M0.3%−8,230−17.0%ReducedHistory
EVREvercore Inc.CLASS A30,416$9.08M0.3%−1,630−5.1%ReducedHistory
TPCTutor Perini CorpCOM116,440$8.99M0.3%+14,220+13.9%AddedHistory
TTMITTM Technologies IncCOM91,230$8.89M0.3%−40,620−30.8%ReducedHistory
GTXGarrett Motion Inc.Stock488,000$8.87M0.3%−26,400−5.1%ReducedHistory
HASHasbro, Inc.COM94,701$8.86M0.3%+21,800+29.9%AddedHistory
KNSAKiniksa Pharmaceuticals International, plcORD SHS CL A181,512$8.74M0.3%−10,680−5.6%ReducedHistory
GEGeneral Electric CoStock30,680$8.71M0.3%−30,700−50.0%ReducedHistory
STRLSterling Infrastructure, Inc.COM21,200$8.63M0.3%−1,130−5.1%ReducedHistory
SOLSSolstice Advanced Materials Inc.COM SHS113,050$8.61M0.3%+113,050NewHistory
ELANElanco Animal Health IncCOM355,950$8.52M0.3%+321,440+931.4%AddedHistory
LSCCLattice Semiconductor CorpCOM91,639$8.50M0.3%+2,620+2.9%AddedHistory
GOOGAlphabet Inc.Stock29,610$8.49M0.3%+22,610+323.0%AddedHistory
SPXCSPX Technologies, Inc.COM41,567$8.31M0.3%−8,260−16.6%ReducedHistory
SMTCSemtech CorpStock107,758$8.29M0.3%+4,800+4.7%AddedHistory
SPDR Series Trust78468R556SP O&G EXPL PRO45,340$8.24M0.3%+45,340New–
State Street Health Care Select Sector SPDR ETF81369Y209ETF56,130$8.23M0.3%00.0%Unchanged–
MODModine Manufacturing CoCOM37,850$8.20M0.3%+25,890+216.5%AddedHistory
BKDBrookdale Senior Living Inc.COM598,454$8.19M0.3%+598,454NewHistory
KRYSKrystal Biotech, Inc.COM31,630$8.17M0.3%+2,370+8.1%AddedHistory
APGAPi Group CorpCOM STK200,263$8.11M0.3%−10,730−5.1%ReducedHistory
BWABorgwarner IncCOM148,506$8.06M0.3%−8,830−5.6%ReducedHistory
ASBAssociated Banc-CorpCOM311,423$8.05M0.3%+21,850+7.5%AddedHistory
PLPlanet Labs PBCCOM CL A285,650$7.98M0.3%−103,820−26.7%ReducedHistory
ACAArcosa, Inc.COM74,650$7.92M0.3%+26,150+53.9%AddedHistory
PAHCPhibro Animal Health CorpCL A COM142,900$7.90M0.3%+142,900NewHistory
WCCWesco International IncCOM28,397$7.77M0.3%−5,840−17.1%ReducedHistory
KTOSKratos Defense & Security Solutions, Inc.COM NEW109,634$7.73M0.3%−43,270−28.3%ReducedHistory
ADSKAutodesk, Inc.COM31,940$7.65M0.3%+31,940NewHistory
LBRTLiberty Energy Inc.COM CL A264,789$7.63M0.3%+264,789NewHistory
SFStifel Financial CorpCOM102,010$7.54M0.2%+3,480+3.5%AddedHistory
BEBloom Energy CorpCOM CL A55,045$7.46M0.2%−14,570−20.9%ReducedHistory
GMGeneral Motors CoCOM99,280$7.40M0.2%00.0%UnchangedHistory

Sold out since Q4 2025 (55)

Positions held at the end of Q4 2025 that are gone from this filing.

Positions of Castleark Management LLC sold out since Q4 2025
SecurityClassShares in Q4 2025Value in Q4 2025% of portfolio in Q4 2025History
BXBlackstone Inc.COM244,268$37.7M1.1%History
iShares MSCI Eafe ETF464287465ETF347,580$33.4M1.0%–
PODDInsulet CorpStock80,957$23.0M0.7%History
SPOTSpotify Technology S.A.Stock33,465$19.4M0.6%History
DALDelta Air Lines, Inc.COM NEW260,740$18.1M0.5%History
PIPRPiper Sandler CompaniesCOM32,456$11.0M0.3%History
SANMSanmina CorpCOM72,459$10.9M0.3%History
WGSGeneDx Holdings Corp.COM CL A74,016$9.63M0.3%History
CECOCeco Environmental CorpCOM156,505$9.37M0.3%History
JBTMJBT Marel CorpCOM58,539$8.82M0.3%History
RMBSRambus IncCOM95,578$8.78M0.3%History
PLNTPlanet Fitness, Inc.CL A80,305$8.71M0.3%History
HCIHCI Group, Inc.COM42,585$8.16M0.2%History
MIRMirion Technologies, Inc.COM CL A348,130$8.15M0.2%History
ARAntero Resources CorpCOM234,290$8.07M0.2%History
COFCapital One Financial CorpStock32,920$7.98M0.2%History
PEGAPegasystems IncCOM133,167$7.95M0.2%History
VMIValmont Industries IncCOM19,706$7.93M0.2%History
CRDOCredo Technology Group Holding LtdStock54,916$7.90M0.2%History
GTESGates Industrial Corp Ltd.ORD SHS357,932$7.68M0.2%History
SIGSignet Jewelers LtdSHS89,388$7.41M0.2%History
PIImpinj IncCOM40,540$7.05M0.2%History
DGDollar General CorpCOM51,930$6.89M0.2%History
HRIHerc Holdings IncCOM45,600$6.77M0.2%History
TPBTurning Point Brands, Inc.COM61,944$6.71M0.2%History
SLViShares Silver TrustETF102,570$6.61M0.2%History
ADPTAdaptive Biotechnologies CorpCOM390,874$6.35M0.2%History
ATECAlphatec Holdings, Inc.COM NEW296,160$6.23M0.2%History
FNFabrinetSHS13,117$5.97M0.2%History
BLDQXO Insulation, LLCStock13,907$5.80M0.2%History
NCNOnCino, Inc.COM205,200$5.26M0.2%History
ZETAZeta Global Holdings Corp.CL A256,297$5.22M0.2%History
CPRICapri Holdings LtdSHS203,870$4.97M0.1%History
HUBGHub Group, Inc.CL A104,810$4.47M0.1%History
BCSBarclays PLCADR165,235$4.21M0.1%History
HAEHaemonetics CorpCOM48,300$3.87M0.1%History
XERSXeris Biopharma Holdings, Inc.COM445,950$3.50M0.1%History
MDPediatrix Medical Group, Inc.COM159,090$3.40M0.1%History
Listed FDS Tr53656G498ROUN MA SEVE ETF49,640$3.27M0.1%–
CRCrane CoCOMMON STOCK16,230$2.99M0.1%History
SLABSilicon Laboratories Inc.Stock22,622$2.96M0.1%History
CRNXCrinetics Pharmaceuticals, Inc.COM62,790$2.92M0.1%History
CALXCalix, IncCOM52,920$2.80M0.1%History
AVAVAeroVironment IncCOM10,283$2.49M0.1%History
TDUPThredUp Inc.CL A373,310$2.39M0.1%History
IONQIonQ, Inc.COM48,320$2.17M0.1%History
AMRCAmeresco, Inc.CL A73,710$2.16M0.1%History
PANWPalo Alto Networks IncStock11,185$2.06M0.1%History
ARLOArlo Technologies, Inc.COM118,031$1.65M<0.1%History
HDBHDFC Bank LtdSPONSORED ADS41,260$1.51M<0.1%History
GENIGenius Sports LtdSHARES CL A119,226$1.31M<0.1%History
SOFISoFi Technologies, Inc.Stock39,350$1.03M<0.1%History
NDSNNordson CorpCOM3,920$942.5K<0.1%History
PENPenumbra IncCOM2,686$835.1K<0.1%History
CLSCelestica IncStock1,850$546.9K<0.1%History