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Livermore
Livermore
ZHEN

Castleark Management LLC

SEC CIK
0001106832
Latest filing
Aug 14, 2026

Holdings in Q3 2021

Holdings as of Sep 30, 2021, filed Nov 12, 2021. Long positions only; changes compare share counts with Q2 2021.

Institution overview
Positions
328
−7 vs. Q2 2021
Portfolio value
$2.62B
−$361.6M (−12.1%) vs. Q2 2021
Filed
Nov 12, 2021
SEC
Holdings of Castleark Management LLC in Q3 2021
SecurityClassSharesValue% of portfolioShare changeActionHistory
MSFTMicrosoft CorpStock422,290$119.1M4.6%−59,365−12.3%ReducedHistory
AAPLApple Inc.Stock698,760$98.9M3.8%−93,560−11.8%ReducedHistory
AMZNAmazon Com IncStock22,859$75.1M2.9%−5,301−18.8%ReducedHistory
MAMastercard IncStock194,017$67.5M2.6%+11,735+6.4%AddedHistory
METAMeta Platforms, Inc.Stock196,565$66.7M2.6%−25,925−11.7%ReducedHistory
NVDANVIDIA CorpStock298,758$61.9M2.4%−68,330−18.6%ReducedConverted for a 4-for-1 splitHistory
ULTAUlta Beauty, Inc.Stock163,985$59.2M2.3%+79,205+93.4%AddedHistory
iShares Russell 1000 Value ETF464287598ETF358,000$56.0M2.1%+93,000+35.1%Added–
LRCXLam Research CorpCOM97,670$55.6M2.1%−13,245−11.9%ReducedHistory
NKENIKE, Inc.Stock374,635$54.4M2.1%−43,440−10.4%ReducedHistory
VVisa Inc.Stock227,850$50.8M1.9%+11,130+5.1%AddedHistory
MCHPMicrochip Technology IncStock315,065$48.4M1.8%−41,405−11.6%ReducedHistory
EWEdwards Lifesciences CorpStock387,335$43.9M1.7%−51,950−11.8%ReducedHistory
PYPLPayPal Holdings, Inc.Stock165,880$43.2M1.7%−22,125−11.8%ReducedHistory
iShares MSCI Eafe ETF464287465ETF530,500$41.4M1.6%00.0%Unchanged–
LLYEli Lilly & CoStock175,845$40.6M1.6%−6,445−3.5%ReducedHistory
State Street Financial Select Sector SPDR ETF81369Y605ETF1,008,140$37.8M1.4%−226,140−18.3%Reduced–
TSLATesla, Inc.Stock47,198$36.6M1.4%−5,050−9.7%ReducedHistory
ADBEAdobe Inc.Stock60,745$35.0M1.3%−14,320−19.1%ReducedHistory
ASMLASML Holding NVADR46,160$34.4M1.3%−20,585−30.8%ReducedHistory
SCHWSchwab Charles CorpStock448,095$32.6M1.2%−255,825−36.3%ReducedHistory
DXCMDexcom IncCOM59,045$32.3M1.2%+965+1.7%AddedHistory
HCAHCA Healthcare, Inc.COM130,885$31.8M1.2%−107,560−45.1%ReducedHistory
LVSLas Vegas Sands CorpCOM751,759$27.5M1.1%−100,565−11.8%ReducedHistory
ZTSZoetis Inc.Stock131,055$25.4M1.0%−22,730−14.8%ReducedHistory
HDHome Depot, Inc.Stock75,454$24.8M0.9%−9,750−11.4%ReducedHistory
LULUlululemon athletica inc.Stock53,378$21.6M0.8%−6,745−11.2%ReducedHistory
OLEDUniversal Display CorpCOM120,085$20.5M0.8%−6,965−5.5%ReducedHistory
SPTSprout Social, Inc.COM CL A165,429$20.2M0.8%−43,030−20.6%ReducedHistory
FFord Motor CoStock1,344,030$19.0M0.7%+316,800+30.8%AddedHistory
MSCIMSCI Inc.Stock30,510$18.6M0.7%−11,540−27.4%ReducedHistory
DHRDanaher CorpStock59,800$18.2M0.7%−20,125−25.2%ReducedHistory
UNPUnion Pacific CorpStock89,805$17.6M0.7%−12,145−11.9%ReducedHistory
ZDZiff Davis, Inc.COM122,030$16.7M0.6%+265+0.2%AddedHistory
State Street Materials Select Sector SPDR ETF81369Y100ETF204,000$16.1M0.6%−204,000−50.0%Reduced–
EFOREverforth IncCOM141,445$16.0M0.6%+141,445NewHistory
WCCWesco International IncCOM134,159$15.5M0.6%−7,470−5.3%ReducedHistory
PACKRanpak Holdings Corp.COM CL A573,770$15.4M0.6%−27,820−4.6%ReducedHistory
WSCWillScot Holdings CorpCOM CL A469,684$14.9M0.6%−10,270−2.1%ReducedHistory
iShares Inc464286608MSCI EURZONE ETF309,000$14.9M0.6%+309,000New–
NTNXNutanix, Inc.Stock383,760$14.5M0.6%+80,665+26.6%AddedHistory
KRNTKornit Digital Ltd.SHS97,905$14.2M0.5%+7,310+8.1%AddedHistory
PNCPNC Financial Services Group, Inc.Stock72,365$14.2M0.5%−72,365−50.0%ReducedHistory
VRNSVaronis Systems IncCOM225,354$13.7M0.5%−12,660−5.3%ReducedHistory
OPRXOptimizeRx CorpCOM NEW158,722$13.6M0.5%+4,790+3.1%AddedHistory
State Street SPDR S&P Homebuilders ETF78464A888ETF189,100$13.6M0.5%00.0%Unchanged–
RRXRegal Rexnord CorpCOM89,015$13.4M0.5%+16,905+23.4%AddedHistory
GTLSChart Industries IncCOM69,830$13.3M0.5%−20,290−22.5%ReducedHistory
CCitigroup IncStock188,810$13.3M0.5%00.0%UnchangedHistory
NTRANatera, Inc.COM116,479$13.0M0.5%+4,950+4.4%AddedHistory
SWAVShockwave Medical, Inc.COM62,309$12.8M0.5%−23,230−27.2%ReducedHistory
CZRCaesars Entertainment, Inc.COM113,130$12.7M0.5%+60,690+115.7%AddedHistory
SPDR Series Trust78468R556SP O&G EXPL PRO129,000$12.5M0.5%−28,100−17.9%Reduced–
DOMOHuckleberry.ai, Inc.Stock144,235$12.2M0.5%+2,780+2.0%AddedHistory
RPDRapid7, Inc.COM107,415$12.1M0.5%+107,415NewHistory
MTSIMACOM Technology Solutions Holdings, Inc.COM186,721$12.1M0.5%−9,580−4.9%ReducedHistory
MXLMaxlinear, IncCOM245,947$12.1M0.5%−12,910−5.0%ReducedHistory
VICRVicor CorpCOM89,655$12.0M0.5%+66,575+288.5%AddedHistory
ESIElement Solutions IncCOM541,764$11.7M0.4%−30,190−5.3%ReducedHistory
SKYChampion Homes, Inc.Stock191,786$11.5M0.4%+28,121+17.2%AddedHistory
ACHCAcadia Healthcare Company, Inc.COM176,320$11.2M0.4%+51,460+41.2%AddedHistory
GLDSPDR Gold TrustETF68,475$11.2M0.4%00.0%UnchangedHistory
SUMSummit Materials, Inc.CL A349,770$11.2M0.4%−19,590−5.3%ReducedHistory
CLHClean Harbors IncCOM106,890$11.1M0.4%−5,950−5.3%ReducedHistory
CWSTCasella Waste Systems IncCL A140,620$10.7M0.4%+140,620NewHistory
OMCLOmnicell, Inc.COM69,535$10.3M0.4%+2,750+4.1%AddedHistory
EVRIEveri Holdings Inc.COM424,198$10.3M0.4%+179,432+73.3%AddedHistory
SYNASYNAPTICS IncStock56,586$10.2M0.4%+10,896+23.8%AddedHistory
ATRCAtriCure, Inc.COM145,966$10.2M0.4%+32,165+28.3%AddedHistory
LNWOLight & Wonder, Inc.COM121,600$10.1M0.4%+2,585+2.2%AddedHistory
CVLTCommvault Systems IncCOM133,375$10.0M0.4%+1,365+1.0%AddedHistory
LPLALPL Financial Holdings Inc.COM64,060$10.0M0.4%−10,185−13.7%ReducedHistory
AXNXAxonics, Inc.COM154,223$10.0M0.4%+41,641+37.0%AddedHistory
SSTKShutterstock, Inc.COM87,672$9.94M0.4%−5,460−5.9%ReducedHistory
CRNCCerence Inc.COM103,046$9.90M0.4%+32,480+46.0%AddedHistory
CSTLCastle Biosciences IncCOM147,867$9.83M0.4%−7,570−4.9%ReducedHistory
WMSAdvanced Drainage Systems, Inc.COM90,810$9.82M0.4%+7,055+8.4%AddedHistory
CPRICapri Holdings LtdSHS198,608$9.62M0.4%−11,110−5.3%ReducedHistory
MYGNMyriad Genetics IncCOM292,850$9.46M0.4%−1,540−0.5%ReducedHistory
GMGeneral Motors CoCOM179,195$9.45M0.4%00.0%UnchangedHistory
PARPar Technology CorpCOM150,484$9.26M0.4%−7,060−4.5%ReducedHistory
HALOHalozyme Therapeutics, Inc.COM219,787$8.94M0.3%−98,000−30.8%ReducedHistory
OPCHOption Care Health, Inc.COM NEW361,980$8.78M0.3%+361,980NewHistory
THRMGentherm IncCOM107,639$8.71M0.3%+107,639NewHistory
NVEENV5 Global, Inc.COM87,727$8.65M0.3%+3,400+4.0%AddedHistory
SHYFShyft Group, Inc.COM227,346$8.64M0.3%−20,005−8.1%ReducedHistory
ROGRogers CorpCOM45,015$8.39M0.3%−1,300−2.8%ReducedHistory
MASMasco CorpCOM143,800$7.99M0.3%00.0%UnchangedHistory
GPREGreen Plains Inc.COM244,130$7.97M0.3%−9,162−3.6%ReducedHistory
LFUSLittelfuse IncCOM28,922$7.90M0.3%−12,180−29.6%ReducedHistory
SKXSkechers USA IncCL A182,290$7.68M0.3%−10,040−5.2%ReducedHistory
THCTenet Healthcare CorpCOM NEW115,470$7.67M0.3%−75,800−39.6%ReducedHistory
CROXCrocs, Inc.COM53,055$7.61M0.3%+53,055NewHistory
VCELVericel CorpCOM153,160$7.47M0.3%−44,630−22.6%ReducedHistory
ELEstee Lauder Companies IncCL A24,110$7.23M0.3%+24,110NewHistory
SONOSonos IncCOM222,200$7.19M0.3%−12,320−5.3%ReducedHistory
TFIITFI International Inc.COM70,257$7.18M0.3%+70,257NewHistory
LIVNLivaNova PLCSHS90,560$7.17M0.3%+90,560NewHistory
MPLXMPLX LPCOM UNIT REP LTD250,162$7.12M0.3%−9,880−3.8%ReducedHistory
SGRYSurgery Partners, Inc.Stock167,793$7.10M0.3%−7,020−4.0%ReducedHistory

Sold out since Q2 2021 (51)

Positions held at the end of Q2 2021 that are gone from this filing.

Positions of Castleark Management LLC sold out since Q2 2021
SecurityClassShares in Q2 2021Value in Q2 2021% of portfolio in Q2 2021History
ITRIItron, Inc.COM137,815$13.8M0.5%History
SPRSpirit AeroSystems Holdings, Inc.COM CL A248,855$11.7M0.4%History
BCOBrinks CoCOM141,265$10.9M0.4%History
CNMDCONMED CorpCOM78,442$10.8M0.4%History
BLMNBloomin' Brands, Inc.COM353,135$9.58M0.3%History
RCMR1 RCM Holdco Inc.COM408,879$9.09M0.3%History
TPRTapestry, Inc.COM185,080$8.05M0.3%History
AVYAAvaya Holdings Corp.COM287,874$7.74M0.3%History
NARIInari Medical, Inc.Stock82,190$7.67M0.3%History
DYDycom Industries IncCOM99,873$7.44M0.3%History
PLBYPlayboy, Inc.COM189,810$7.38M0.2%History
KEXKirby CorpCOM115,340$6.99M0.2%History
NGVTIngevity CorpCOM85,280$6.94M0.2%History
UCTTUltra Clean Holdings, Inc.COM128,849$6.92M0.2%History
SLBSLB LimitedStock205,700$6.58M0.2%History
DANDANA IncCOM259,598$6.17M0.2%History
WWWW International, Inc.COM169,155$6.11M0.2%History
INGNInogen IncCOM88,190$5.75M0.2%History
BALYBally's CorpCOM105,910$5.73M0.2%History
CARAvis Budget Group, Inc.COM63,445$4.94M0.2%History
CMCOColumbus McKinnon CorpCOM91,812$4.43M0.1%History
DBIDesigner Brands Inc.CL A258,106$4.27M0.1%History
FLYYSpirit Aviation Holdings, Inc.COM126,455$3.85M0.1%History
PTCPTC Inc.Stock22,325$3.15M0.1%History
GKOSGLAUKOS CorpCOM36,900$3.13M0.1%History
BBIOBridgeBio Pharma, Inc.COM46,457$2.83M0.1%History
CGNXCognex CorpCOM32,290$2.71M0.1%History
AVNTAvient CorpCOM55,181$2.71M0.1%History
FRPTFreshpet, Inc.Stock15,222$2.48M0.1%History
AMBAAmbarella IncSHS23,270$2.48M0.1%History
State Street Energy Select Sector SPDR ETF81369Y506ETF37,350$2.01M0.1%–
HESHess CorpStock22,920$2.00M0.1%History
SUSuncor Energy IncStock78,980$1.89M0.1%History
XOMExxonMobil Holdings CorpCOM29,350$1.85M0.1%History
HALHalliburton CoStock72,500$1.68M0.1%History
PSXPhillips 66Stock15,400$1.32M<0.1%History
Arco Platform LtdG04553106COM CL A41,805$1.28M<0.1%–
APAAPA CorpStock51,270$1.11M<0.1%History
PBRPetrobras - Petroleo Brasileiro SASPONSORED ADR85,237$1.04M<0.1%History
SAFMSanderson Farms IncCOM4,875$916.0K<0.1%History
PTENPatterson Uti Energy IncCOM80,130$796.0K<0.1%History
QTNTQuotient LtdSHS194,600$708.0K<0.1%History
TTETotalEnergies SESPONSORED ADS10,735$486.0K<0.1%History
ASNDAscendis Pharma A/SSPONSORED ADR3,095$407.0K<0.1%History
SMGScotts Miracle-Gro CoStock1,840$353.0K<0.1%History
XPOXPO, Inc.COM2,180$305.0K<0.1%History
MKTXMarketaxess Holdings IncCOM570$264.0K<0.1%History
BPBP PLCADR5,010$132.0K<0.1%History
COUPCoupa Software IncCOM455$119.0K<0.1%History
EATBrinker International, IncStock1,090$67.0K<0.1%History
Royal Dutch Shell PLC780259206SPONS ADR A965$39.0K<0.1%–