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Livermore
Livermore
ZHEN

Castleark Management LLC

SEC CIK
0001106832
Latest filing
Aug 14, 2026

Holdings in Q4 2025

Holdings as of Dec 31, 2025, filed Feb 13, 2026. Long positions only; changes compare share counts with Q3 2025.

Institution overview
Positions
294
+10 vs. Q3 2025
Portfolio value
$3.41B
−$160.1M (−4.5%) vs. Q3 2025
Filed
Feb 13, 2026
SEC
Holdings of Castleark Management LLC in Q4 2025
SecurityClassSharesValue% of portfolioShare changeActionHistory
NVDANVIDIA CorpStock1,408,146$262.6M7.7%+30,630+2.2%AddedHistory
MSFTMicrosoft CorpStock369,460$178.7M5.2%+7,856+2.2%AddedHistory
GOOGLAlphabet Inc.Stock381,639$119.5M3.5%+7,760+2.1%AddedHistory
AMZNAmazon Com IncStock472,149$109.0M3.2%+81,542+20.9%AddedHistory
AAPLApple Inc.Stock387,041$105.2M3.1%+7,020+1.8%AddedHistory
LLYEli Lilly & CoStock81,578$87.7M2.6%+37,025+83.1%AddedHistory
State Street SPDR Portfolio Intermediate Term Corporate Bond ETF78464A375ETF2,519,370$85.2M2.5%00.0%Unchanged–
METAMeta Platforms, Inc.Stock122,415$80.8M2.4%−24,960−16.9%ReducedHistory
Vanguard Mortgage-Backed Securities ETF92206C771ETF1,705,540$80.3M2.4%00.0%Unchanged–
iShares U.S. Treasury Bond ETF46429B267ETF3,329,569$76.7M2.3%+71,470+2.2%Added–
AVGOBroadcom Inc.Stock205,880$71.3M2.1%−60.0%ReducedHistory
LRCXLam Research CorpStock372,876$63.8M1.9%−131,244−26.0%ReducedHistory
SCHWSchwab Charles CorpStock622,535$62.2M1.8%+10,861+1.8%AddedHistory
VVisa Inc.Stock170,478$59.8M1.8%+3,388+2.0%AddedHistory
MAMastercard IncStock102,451$58.5M1.7%+2,122+2.1%AddedHistory
SHOPShopify Inc.Stock345,382$55.6M1.6%+7,138+2.1%AddedHistory
ANETArista Networks, Inc.Stock411,277$53.9M1.6%+8,798+2.2%AddedHistory
NOWServiceNow, Inc.Stock270,420$41.4M1.2%+5,530+2.1%AddedConverted for a 5-for-1 splitHistory
SPDR Series Trust78468R101ST SHO TREAS ETF1,334,080$39.1M1.1%00.0%Unchanged–
BXBlackstone Inc.COM244,268$37.7M1.1%+5,094+2.1%AddedHistory
GILDGilead Sciences, Inc.Stock277,328$34.0M1.0%+136,296+96.6%AddedHistory
iShares MSCI Eafe ETF464287465ETF347,580$33.4M1.0%00.0%Unchanged–
SNOWSnowflake Inc.Stock151,192$33.2M1.0%+3,082+2.1%AddedHistory
MCHPMicrochip Technology IncStock515,494$32.8M1.0%+43,150+9.1%AddedHistory
GEVGE Vernova Inc.Stock47,741$31.2M0.9%+1,168+2.5%AddedHistory
ULTAUlta Beauty, Inc.Stock49,941$30.2M0.9%+49,941NewHistory
BKNGBooking Holdings Inc.Stock5,472$29.3M0.9%+3,412+165.6%AddedHistory
iShares Tr46428865310-20 YR TRS ETF258,432$26.3M0.8%00.0%Unchanged–
UBERUber Technologies, IncStock309,136$25.3M0.7%+51,868+20.2%AddedHistory
PODDInsulet CorpStock80,957$23.0M0.7%+30,460+60.3%AddedHistory
AMDAdvanced Micro Devices IncStock104,746$22.4M0.7%+104,746NewHistory
VRTVertiv Holdings CoCOM CL A124,737$20.2M0.6%+2,536+2.1%AddedHistory
iShares Tr464288588MBS ETF204,235$19.4M0.6%+7,330+3.7%Added–
SPOTSpotify Technology S.A.Stock33,465$19.4M0.6%+714+2.2%AddedHistory
GEGeneral Electric CoStock61,380$18.9M0.6%+8,640+16.4%AddedHistory
TPRTapestry, Inc.COM142,084$18.2M0.5%+142,084NewHistory
DALDelta Air Lines, Inc.COM NEW260,740$18.1M0.5%+31,250+13.6%AddedHistory
Vanguard Scottsdale FDS92206C813LG-TERM COR BD236,450$17.9M0.5%00.0%Unchanged–
GHGuardant Health, Inc.COM165,043$16.9M0.5%+4,970+3.1%AddedHistory
ADIAnalog Devices IncStock61,172$16.6M0.5%+1,696+2.9%AddedHistory
ODFLOld Dominion Freight Line, Inc.COM95,730$15.0M0.4%+95,730NewHistory
JPMJPMorgan Chase & CoStock44,635$14.4M0.4%−8,730−16.4%ReducedHistory
ETNEaton Corp plcStock44,514$14.2M0.4%+1,462+3.4%AddedHistory
ASNDAscendis Pharma A/SSPONSORED ADR66,336$14.1M0.4%+23,680+55.5%AddedHistory
MSMorgan StanleyStock79,470$14.1M0.4%−10,770−11.9%ReducedHistory
iShares Tr464288638ISHS 5-10YR INVT259,994$14.0M0.4%00.0%Unchanged–
TJXTJX Companies IncStock90,620$13.9M0.4%+13,680+17.8%AddedHistory
CCitigroup IncStock117,464$13.7M0.4%+39,520+50.7%AddedHistory
DYDycom Industries IncCOM38,166$12.9M0.4%+8,140+27.1%AddedHistory
TSLATesla, Inc.Stock28,100$12.6M0.4%+25,300+903.6%AddedHistory
WMTWalmart Inc.Stock113,270$12.6M0.4%−27,990−19.8%ReducedHistory
LGNDLigand Pharmaceuticals IncCOM NEW66,736$12.6M0.4%+2,060+3.2%AddedHistory
SFStifel Financial CorpCOM98,530$12.3M0.4%+10,860+12.4%AddedHistory
SITMSITIME CorpCOM33,554$11.9M0.3%+970+3.0%AddedHistory
KTOSKratos Defense & Security Solutions, Inc.COM NEW152,904$11.6M0.3%−28,050−15.5%ReducedHistory
LITELumentum Holdings Inc.COM31,153$11.5M0.3%−34,670−52.7%ReducedHistory
EQTEQT CorpStock205,765$11.0M0.3%+65,280+46.5%AddedHistory
TSMTaiwan Semiconductor Manufacturing Co LtdADR36,290$11.0M0.3%−19,320−34.7%ReducedHistory
PIPRPiper Sandler CompaniesCOM32,456$11.0M0.3%+4,610+16.6%AddedHistory
EVREvercore Inc.CLASS A32,046$10.9M0.3%+960+3.1%AddedHistory
SANMSanmina CorpCOM72,459$10.9M0.3%+16,385+29.2%AddedHistory
BABoeing CoStock48,770$10.6M0.3%+45,370+1,334.4%AddedHistory
AEISAdvanced Energy Industries IncCOM49,133$10.3M0.3%+1,420+3.0%AddedHistory
SPXCSPX Technologies, Inc.COM49,827$9.97M0.3%+1,350+2.8%AddedHistory
XMTRXometry, Inc.CLASS A COM167,478$9.96M0.3%+3,530+2.2%AddedHistory
State Street SPDR S&P Biotech ETF78464A870ETF80,890$9.86M0.3%00.0%Unchanged–
FCFSFirstCash Holdings, Inc.COM61,200$9.75M0.3%+61,200NewHistory
WGSGeneDx Holdings Corp.COM CL A74,016$9.63M0.3%+2,230+3.1%AddedHistory
CECOCeco Environmental CorpCOM156,505$9.37M0.3%+3,120+2.0%AddedHistory
RKTRocket Companies, Inc.Stock481,560$9.32M0.3%+98,060+25.6%AddedHistory
IDCCInterDigital, Inc.COM28,936$9.21M0.3%+870+3.1%AddedHistory
NXTNextpower Inc.Stock105,484$9.19M0.3%−11,570−9.9%ReducedHistory
FIVEFive Below, IncCOM48,340$9.11M0.3%+10,520+27.8%AddedHistory
TTMITTM Technologies IncCOM131,850$9.10M0.3%+3,990+3.1%AddedHistory
ARQTArcutis Biotherapeutics, Inc.COM309,430$8.99M0.3%+309,430NewHistory
GTXGarrett Motion Inc.Stock514,400$8.97M0.3%+514,400NewHistory
FTITechnipFMC plcCOM200,886$8.95M0.3%+5,750+2.9%AddedHistory
IRTCiRhythm Holdings, Inc.COM50,193$8.91M0.3%−8,200−14.0%ReducedHistory
DOCNDigitalOcean Holdings, Inc.COM184,989$8.90M0.3%+184,989NewHistory
JBTMJBT Marel CorpCOM58,539$8.82M0.3%+7,450+14.6%AddedHistory
RMBSRambus IncCOM95,578$8.78M0.3%−15,260−13.8%ReducedHistory
BBIOBridgeBio Pharma, Inc.COM114,017$8.72M0.3%−9,690−7.8%ReducedHistory
PLNTPlanet Fitness, Inc.CL A80,305$8.71M0.3%−2,210−2.7%ReducedHistory
State Street Health Care Select Sector SPDR ETF81369Y209ETF56,130$8.69M0.3%+56,130New–
MRCYMercury Systems IncCOM118,458$8.65M0.3%+16,990+16.7%AddedHistory
MDGLMadrigal Pharmaceuticals, Inc.COM14,466$8.42M0.2%+4,540+45.7%AddedHistory
WCCWesco International IncCOM34,237$8.38M0.2%+1,010+3.0%AddedHistory
RACEFerrari N.V.COM22,352$8.26M0.2%+352+1.6%AddedHistory
iShares Tr46428743220 YR TR BD ETF94,540$8.24M0.2%00.0%Unchanged–
HCIHCI Group, Inc.COM42,585$8.16M0.2%+1,300+3.1%AddedHistory
MIRMirion Technologies, Inc.COM CL A348,130$8.15M0.2%+348,130NewHistory
ARAntero Resources CorpCOM234,290$8.07M0.2%+234,290NewHistory
GMGeneral Motors CoCOM99,280$8.07M0.2%+99,280NewHistory
APGAPi Group CorpCOM STK210,993$8.07M0.2%+6,270+3.1%AddedHistory
COFCapital One Financial CorpStock32,920$7.98M0.2%+16,780+104.0%AddedHistory
CATCaterpillar IncStock13,920$7.97M0.2%−2,310−14.2%ReducedHistory
PEGAPegasystems IncCOM133,167$7.95M0.2%+4,050+3.1%AddedHistory
VMIValmont Industries IncCOM19,706$7.93M0.2%+580+3.0%AddedHistory
KNSAKiniksa Pharmaceuticals International, plcORD SHS CL A192,192$7.93M0.2%+33,560+21.2%AddedHistory
CRDOCredo Technology Group Holding LtdStock54,916$7.90M0.2%+3,140+6.1%AddedHistory

Sold out since Q3 2025 (53)

Positions held at the end of Q3 2025 that are gone from this filing.

Positions of Castleark Management LLC sold out since Q3 2025
SecurityClassShares in Q3 2025Value in Q3 2025% of portfolio in Q3 2025History
Advisors Inner Circle FD II00791R608CASTLEARK LARGE7,383,950$322.1M9.0%–
NFLXNetflix IncStock54,948$65.9M1.8%History
DXCMDexcom IncCOM300,249$20.2M0.6%History
SPDR Series Trust78464A714ST STR SP RETAIL188,220$16.2M0.5%–
ORCLOracle CorpStock51,200$14.4M0.4%History
LIFLife360, Inc.COM100,802$10.7M0.3%History
PNCPNC Financial Services Group, Inc.Stock48,240$9.69M0.3%History
MPCMarathon Petroleum CorpStock46,258$8.92M0.2%History
SPDR Series Trust78464A540ST STR SP TELCO59,740$8.36M0.2%–
PMPhilip Morris International Inc.Stock49,855$8.09M0.2%History
AMSCAmerican Superconductor CorpStock135,617$8.05M0.2%History
RCLRoyal Caribbean Cruises LtdCOM24,310$7.87M0.2%History
SRADSportradar Group AGCLASS A ORD SHS273,962$7.37M0.2%History
State Street SPDR S&P Homebuilders ETF78464A888ETF59,240$6.56M0.2%–
PRCHPorch Group, Inc.COM380,761$6.39M0.2%History
AGCOAGCO CorpCOM56,415$6.04M0.2%History
VRNSVaronis Systems IncCOM104,061$5.98M0.2%History
VCVisteon CorpCOM NEW48,885$5.86M0.2%History
RSIRush Street Interactive, Inc.COM281,986$5.78M0.2%History
KFYKorn FerryCOM NEW77,641$5.43M0.2%History
ITRIItron, Inc.COM42,070$5.24M0.1%History
ALABAstera Labs, Inc.Stock26,221$5.13M0.1%History
TGTXTG Therapeutics, Inc.COM140,316$5.07M0.1%History
TEXTerex CorpStock98,375$5.05M0.1%History
ALKAlaska Air Group, Inc.COM97,153$4.84M0.1%History
WINGWingstop Inc.COM17,843$4.49M0.1%History
AAPAdvance Auto Parts IncCOM70,705$4.34M0.1%History
SANBanco Santander, S.A.ADR405,515$4.25M0.1%History
MGNIMagnite, Inc.COM193,185$4.21M0.1%History
RRyder System IncCOM21,680$4.09M0.1%History
KNFKnife River CorpStock51,539$3.96M0.1%History
ALGMAllegro Microsystems, Inc.COM133,508$3.90M0.1%History
RIOTRiot Platforms, Inc.COM193,630$3.68M0.1%History
iShares Tr464288794US BR DEL SE ETF19,520$3.45M0.1%–
AAOIApplied Optoelectronics, Inc.COM125,379$3.25M0.1%History
MCDMcDonalds CorpStock10,250$3.11M0.1%History
HSBCHSBC Holdings PLCSPON ADR NEW42,100$2.99M0.1%History
ROADConstruction Partners, Inc.COM CL A23,305$2.96M0.1%History
SNVSynovus Financial CorpCOM NEW54,880$2.69M0.1%History
HIMSHims & Hers Health, Inc.Stock43,494$2.47M0.1%History
TDWTidewater IncCOM45,204$2.41M0.1%History
DEDeere & CoStock4,620$2.11M0.1%History
DAVEDave Inc.CLASS A COM NEW9,863$1.97M0.1%History
PLUGPlug Power IncStock728,110$1.70M<0.1%History
FANGDiamondback Energy, Inc.Stock11,855$1.70M<0.1%History
CORZCore Scientific, Inc.COM94,131$1.69M<0.1%History
ENVXEnovix CorpCOM168,590$1.68M<0.1%History
HOLXHologic IncCOM8,790$593.2K<0.1%History
CVXChevron CorpStock3,170$492.3K<0.1%History
MANHManhattan Associates IncStock2,350$481.7K<0.1%History
WHDCactus, Inc.CL A7,290$287.7K<0.1%History
BSXBoston Scientific CorpStock2,350$229.4K<0.1%History
CORTCorcept Therapeutics IncCOM2,740$227.7K<0.1%History