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  Name: CASTLEARK MANAGEMENT LLC
  City: CHICAGO
  State: IL
  Zip: 60606
   
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Portfolio Summary View Filing
  Filing Report Date : 2023-12-31
  Total Value : $2,256,074,000
  Total Value Change : $293,446,000
  Securities Held Change : 7
   
All Securities Held : 281
  New Positions : 47
  Closed Positions : 40
  Increased Positions : 50
  Unchanged Positions : 107
  Decreased Positions : 77

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Holdings Found : 100     View All Holdings Currently Viewing:  ALL     Page 1 of 1
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Ticker Company Name Position
Rank
New/Closed
Postion
Last
Close
    Value Shares Held
% of
Portfolio
Value
Change
Change In
Shares Held
   % of Company    Industry
   (MSFT)1 Year Chart         MSFT Microsoft Corp 1 - $409.06 $154,749,000 411,524 6.86% 37,309,000 39,584 0.005    Application Software
   (AAPL)1 Year Chart         AAPL Apple Inc 2 - $169.02 $111,389,000 578,553 4.94% 9,638,000 -15,752 0.003    Personal Computers
   (NVDA)1 Year Chart         NVDA NVIDIA Corporation 3 - $796.77 $95,261,000 192,361 4.22% 8,768,000 -6,477 0.008    Semiconductor - Speci...
   (AMZN)1 Year Chart         AMZN Amazon.com Inc 4 - $176.59 $80,951,000 532,785 3.59% 24,656,000 89,935 0.005    Internet Software & S...
   (GOOGL)1 Year Chart         GOOGL Alphabet Inc 5 - $159.13 $71,076,000 508,814 3.15% 3,759,000 -5,606 0.009    Search Engines & Info...
   (FB)1 Year Chart         FB Meta Platforms Inc 6 - $493.50 $65,433,000 184,861 2.9% 15,929,000 19,962 0.008    Internet Service Prov...
   (NOW)1 Year Chart         NOW Servicenow, Inc. 7 - $746.29 $60,856,000 86,138 2.7% -423,000 -23,492 0.044    Information Technolog...
   (MA)1 Year Chart         MA MasterCard Inc A 8 - $462.50 $56,760,000 133,081 2.52% -11,201,000 -38,576 0.013    Business Services
   (DXCM)1 Year Chart         DXCM DexCom Inc 9 - $137.87 $54,370,000 438,147 2.41% 12,287,000 -12,903 0.112    Medical Instruments &...
   (LULU)1 Year Chart         LULU Lululemon Athletica Inc 10 - $364.59 $50,205,000 98,193 2.23% 11,240,000 -2,855 0.079    Textile - Apparel Clo...
   (V)1 Year Chart         V Visa Inc 11 - $275.02 $46,547,000 178,785 2.06% 4,277,000 -4,990 0.011    Business Services
   (LLY)1 Year Chart         LLY Eli Lilly & Co 12 - $732.20 $45,900,000 78,742 2.03% 2,347,000 -2,343 0.008    Drug Manufacturers - ...
   (ADBE)1 Year Chart         ADBE Adobe Systems Inc 13 - $477.12 $43,746,000 73,325 1.94% 15,679,000 18,280 0.015    Application Software
   (LRCX)1 Year Chart         LRCX Lam Research Corp 14 - $884.89 $41,350,000 52,792 1.83% 7,821,000 -703 0.037    Semiconductor Equipme...
   (SYK)1 Year Chart         SYK Stryker Corp 15 - $336.85 $36,518,000 121,945 1.62% 2,239,000 -3,495 0.032    Medical Instruments &...
   (ISRG)1 Year Chart         ISRG Intuitive Surgical Inc 16 - $372.63 $33,447,000 99,144 1.48% 3,639,000 -2,836 0.028    Medical Appliances & ...
   (EFA)1 Year Chart         EFA iShares TR MSCI EAFE Indx FD 17 - $77.70 $27,458,000 364,410 1.22% 2,343,000 0 0.051    Closed - End Fund - E...
   (XLI)1 Year Chart         XLI SPDR Industrial Sector 18 - $122.09 $25,477,000 223,500 1.13% -19,841,000 -223,510 0.013    Closed - End Fund - E...
   (IWN)1 Year Chart         IWN iShares Russell 2000 Value 19 New $151.28 $25,429,000 163,710 1.13% 25,429,000 163,710 0.197    Closed - End Fund - E...
   (KRE)1 Year Chart         KRE streetTRACKS Series Trust -... 20 New $49.01 $24,145,000 460,510 1.07% 24,145,000 460,510 0.125    Closed - End Fund - E...
   (XHB)1 Year Chart         XHB SPDR S&P Homebuilders 21 - $102.63 $23,263,000 243,180 1.03% 13,140,000 110,980 0.095    Closed - End Fund - E...
   (LVS)1 Year Chart         LVS Las Vegas Sands Corp 22 - $45.84 $21,066,000 428,078 0.93% -19,429,000 -455,331 0.056    Gambling/Resorts
   (SLB)1 Year Chart         SLB Schlumberger Ltd 23 - $49.11 $20,182,000 387,825 0.89% -17,354,000 -256,025 0.028    Oil & Gas Equipment &...
   (AMAT)1 Year Chart         AMAT Applied Materials Inc 24 New $196.06 $20,085,000 123,925 0.89% 20,085,000 123,925 0.014    Semiconductor Equipme...
   (ASML)1 Year Chart         ASML ASML Holding N.V. (ADR) 25 - $0.00 $18,918,000 24,994 0.84% -6,577,000 -18,316 0.006    Semiconductor Equipme...
   (UNP)1 Year Chart         UNP Union Pacific Corp 26 New $231.98 $18,189,000 74,054 0.81% 18,189,000 74,054 0.011    Railroads
   (MSCI)1 Year Chart         MSCI Msci Inc 27 - $464.65 $16,720,000 29,559 0.74% -1,989,000 -6,906 0.036    Business Services
   (SNPS)1 Year Chart         SNPS Synopsys Inc 28 New $527.52 $16,447,000 31,942 0.73% 16,447,000 31,942 0.021    Technical & System So...
   (XRT)1 Year Chart         XRT The SPDR Retail ETF streetT... 29 - $72.52 $16,051,000 221,940 0.71% 2,544,000 0 0.201    Closed - End Fund - E...
   (SMH)1 Year Chart         SMH Vaneck Vectors Semiconducto... 30 New $208.63 $15,773,000 90,200 0.7% 15,773,000 90,200 0.1    N/A
   (AMD)1 Year Chart         AMD Advanced Micro Devices Inc 31 - $151.74 $15,600,000 105,830 0.69% 1,746,000 -28,910 0.009    Semiconductor- Broad...
   (DE)1 Year Chart         DE Deere & Co 32 - $394.62 $14,291,000 35,740 0.63% 415,000 -1,030 0.011    Farm & Construction M...
   (EWJ)1 Year Chart         EWJ iShares MSCI-Japan 33 - $67.61 $14,281,000 222,650 0.63% 857,000 0 0.125    Closed - End Fund - E...
   (XOM)1 Year Chart         XOM Exxon Mobil Corp 34 - $121.05 $12,617,000 126,200 0.56% 3,507,000 48,720 0.003    Integrated Oil & Gas
   (BA)1 Year Chart         BA Boeing Co 35 - $164.33 $12,319,000 47,260 0.55% 2,041,000 -6,360 0.008    Aerospace/Defense - M...
   (JPM)1 Year Chart         JPM JP Morgan Chase & Co 36 - $193.08 $12,309,000 72,365 0.55% 4,807,000 20,635 0.002    Domestic Money Center...
   (APG)1 Year Chart         APG Api Group Corp 37 - $37.51 $11,870,000 343,053 0.53% 1,608,000 -52,690 0.148    N/A
   (FTI)1 Year Chart         FTI Technipfmc Limited 38 - $25.72 $10,855,000 539,000 0.48% -1,629,000 -74,760 0.12    Oil & Gas Equipment &...
   (HD)1 Year Chart         HD Home Depot Inc 39 - $333.01 $10,622,000 30,650 0.47% 9,927,000 28,350 0.003    Home Improvement Stores
   (PSN)1 Year Chart         PSN Parsons Corp 40 - $78.90 $9,878,000 157,520 0.44% 1,307,000 -180 0.143    N/A
   (RIO)1 Year Chart         RIO Rio Tinto Plc (ADR) 41 - $68.14 $9,752,000 130,970 0.43% 1,417,000 0 0.01    Gold
   (LEN)1 Year Chart         LEN Lennar Corp 42 New $154.12 $9,668,000 64,870 0.43% 9,668,000 64,870 0.024    Residential Construct...
   (VRNS)1 Year Chart         VRNS Varonis Systems Inc 43 - $44.87 $9,648,000 213,080 0.43% 3,133,000 -250 0.201    N/A
   (PNR)1 Year Chart         PNR Pentair Inc 44 - $78.99 $9,410,000 129,420 0.42% 1,525,000 7,640 0.078    Diversified Machinery
   (BCO)1 Year Chart         BCO Brinks Co 45 - $89.13 $9,350,000 106,310 0.41% 1,618,000 -130 0.214    Security & Protection...
   (UNH)1 Year Chart         UNH Unitedhealth Group Inc 46 - $487.30 $9,252,000 17,574 0.41% 136,000 -506 0.002    Health Care Plans
   (EVR)1 Year Chart         EVR Evercore Partners Inc. 47 - $186.59 $9,100,000 53,200 0.4% 2,446,000 4,940 0.131    Asset Management
   (JBHT)1 Year Chart         JBHT JB Hunt Transport Services Inc 48 - $164.63 $8,966,000 44,890 0.4% 7,899,000 39,230 0.042    Trucking
   (SAIA)1 Year Chart         SAIA Saia Inc 49 - $527.83 $8,751,000 19,970 0.39% 2,197,000 3,530 0.06    Trucking
   (MEDP)1 Year Chart         MEDP Medpace Holdings, Inc. 50 - $397.56 $8,617,000 28,110 0.38% 2,375,000 2,330 0.079    N/A
   (GLD)1 Year Chart         GLD streetTRACKS Gold Trust 51 - $214.64 $8,602,000 44,995 0.38% 6,180,000 30,870 0.011    Closed - End Fund - E...
   (CLS)1 Year Chart         CLS Celestica Inc (USA) 52 - $44.10 $8,563,000 292,450 0.38% 1,811,000 17,080 0.265    Printed Circuit Boards
   (TJX)1 Year Chart         TJX TJX Companies Inc 53 - $95.28 $8,223,000 87,660 0.36% 432,000 0 0.007    Discount, Variety Stores
   (C)1 Year Chart         C Citigroup Inc 54 - $62.47 $7,943,000 154,414 0.35% 7,785,000 150,570 0.007    Domestic Money Center...
   (SMCI)1 Year Chart         SMCI Super Micro Computer Inc 55 - $754.72 $7,942,000 27,940 0.35% -921,000 -4,380 0.054    Networking & Communic...
   (ATI)1 Year Chart         ATI Allegheny Technologies Inc 56 - $49.22 $7,936,000 174,540 0.35% -570,000 -32,160 0.125    Steel & Iron
   (XPO)1 Year Chart         XPO XPO Logistics Inc 57 - $117.48 $7,846,000 89,580 0.35% 1,902,000 9,960 0.08    AirDelivery & Freight...
   (FCFS)1 Year Chart         FCFS First Cash Financial Servic... 58 New $132.03 $7,821,000 72,160 0.35% 7,821,000 72,160 0.149    Specialty Retail, Other
   (ONTO)1 Year Chart         ONTO Onto Innovation Inc 59 - $176.76 $7,766,000 50,790 0.34% 1,283,000 -50 0.104    Scientific & Technica...
   (TTEK)1 Year Chart         TTEK Tetra Tech Inc 60 - $189.29 $7,677,000 45,990 0.34% 676,000 -60 0.085    Technical Services
   (RMBS)1 Year Chart         RMBS Rambus Inc 61 - $56.52 $7,544,000 110,540 0.33% -1,871,000 -58,220 0.097    Semiconductor - Memor...
   (KTB)1 Year Chart         KTB Kontoor Brands, Inc. 62 - $61.86 $7,414,000 118,770 0.33% 3,692,000 34,000 0.169    N/A
   (NTNX)1 Year Chart         NTNX Nutanix, Inc. 63 New $60.89 $7,319,000 153,460 0.32% 7,319,000 153,460 0.079    N/A
   (KNF)1 Year Chart         KNF Knife River Holding Co 64 New $77.06 $7,299,000 110,290 0.32% 7,299,000 110,290 0.195    N/A
   (SGMS)1 Year Chart         SGMS Scientific Games Corp 65 - $93.55 $7,211,000 87,820 0.32% 1,404,000 6,410 0.091    Diversified Computer ...
   (ACWX)1 Year Chart         ACWX iShares MSCI ACWI ex US Index 66 - $52.17 $7,138,000 139,850 0.32% 564,000 0 0.02    Closed - End Fund - E...
   (MTSI)1 Year Chart         MTSI MA Com Technology Solutions... 67 - $92.81 $7,097,000 76,350 0.31% 3,791,000 35,820 0.114    N/A
   (AXNX)1 Year Chart         AXNX Axonics Modulation Technolo... 68 New $66.64 $7,044,000 113,200 0.31% 7,044,000 113,200 0.214    N/A
   (FN)1 Year Chart         FN Fabrinet 69 - $169.93 $7,029,000 36,930 0.31% 1,997,000 6,730 0.1    Electronic Equipment
   (IBP)1 Year Chart         IBP Installed Building Products... 70 - $235.25 $6,845,000 37,440 0.3% 544,000 -13,010 0.126    N/A
   (TREX)1 Year Chart         TREX Trex Co Inc 71 - $89.20 $6,833,000 82,530 0.3% 831,000 -14,860 0.071    General Building Mate...
   (HQY)1 Year Chart         HQY Healthequity Inc 72 - $0.00 $6,814,000 102,770 0.3% 1,650,000 32,080 0.115    N/A
   (CYBR)1 Year Chart         CYBR Cyber-Ark Software Ltd 73 New $244.53 $6,775,000 30,930 0.3% 6,775,000 30,930 0.08    N/A
   (WIX)1 Year Chart         WIX WIX.COM Ltd 74 - $121.69 $6,610,000 53,730 0.29% 1,672,000 -60 0.097    N/A
   (GWRE)1 Year Chart         GWRE Guidewire Software, Inc. 75 New $113.51 $6,516,000 59,760 0.29% 6,516,000 59,760 0.071    Business Software & S...
   (SPT)1 Year Chart         SPT Sprout Social, Inc. 76 New $52.48 $6,477,000 105,420 0.29% 6,477,000 105,420 0.199    N/A
   (JLL)1 Year Chart         JLL Jones Lang Lasalle Inc 77 - $181.86 $6,397,000 33,870 0.28% 2,232,000 4,370 0.066    Property Management
   (AVAV)1 Year Chart         AVAV Aerovironment Inc 78 - $157.99 $6,374,000 50,570 0.28% 1,537,000 7,200 0.21    Aerospace/Defense Pro...
   (YELP)1 Year Chart         YELP Yelp Inc 79 - $40.39 $6,301,000 133,110 0.28% 759,000 -150 0.18    Internet Service Prov...
   (MANH)1 Year Chart         MANH Manhattan Associates Inc 80 - $206.32 $6,289,000 29,210 0.28% -3,238,000 -18,990 0.046    Technical & System So...
   (FRSH)1 Year Chart         FRSH Freshworks Inc. 81 - $18.52 $6,277,000 267,200 0.28% 948,000 -320 0.166    N/A
   (QQQ)1 Year Chart         QQQ Invesco QQQ Trust Series I 82 New $426.51 $6,270,000 15,310 0.28% 6,270,000 15,310 0.003    Closed - End Fund - Debt
   (APPF)1 Year Chart         APPF Appfolio Inc 83 - $215.90 $6,178,000 35,660 0.27% 1,300,000 8,950 0.197    N/A
   (CWAN)1 Year Chart         CWAN Clearwater Analytics Holdin... 84 - $16.53 $6,140,000 306,540 0.27% 559,000 17,950 0.258    N/A
   (CMPR)1 Year Chart         CMPR Cimpress NV 85 - $89.38 $6,125,000 76,510 0.27% 769,000 0 0.294    Business Services
   (OPCH)1 Year Chart         OPCH Option Care Health 86 - $29.93 $6,104,000 181,190 0.27% -51,000 -9,070 0.097    Specialized Health Se...
   (XLF)1 Year Chart         XLF SPDR Financial Sector 87 New $41.12 $6,102,000 162,290 0.27% 6,102,000 162,290 0.002    Closed - End Fund - E...
   (STRL)1 Year Chart         STRL Sterling Construction Co Inc 88 - $100.97 $6,076,000 69,104 0.27% 368,000 -8,580 0.246    Residential Construct...
   (SUM)1 Year Chart         SUM Summit Materials, Inc. 89 - $38.93 $5,993,000 155,826 0.27% -154,000 -41,570 0.123    N/A
   (CASY)1 Year Chart         CASY Caseys General Stores Inc 90 - $315.64 $5,981,000 21,770 0.27% 1,642,000 5,790 0.059    Grocery Stores
   (NE)1 Year Chart         NE Noble Corp 91 - $46.05 $5,967,000 123,900 0.26% 1,624,000 38,160 0.092    Oil & Gas Drilling & ...
   (ESI)1 Year Chart         ESI Element Solutions Inc 92 - $23.82 $5,842,000 252,460 0.26% 4,416,000 179,740 0.102    N/A
   (CRS)1 Year Chart         CRS Carpenter Technology Corp 93 - $80.40 $5,712,000 80,680 0.25% 954,000 9,890 0.168    Steel & Iron
   (BRBR)1 Year Chart         BRBR Bellring Brands, Inc. 94 - $55.62 $5,701,000 102,850 0.25% 759,000 -17,020 0.076    N/A
   (ACVA)1 Year Chart         ACVA Acv Auctions Inc. 95 - $0.00 $5,637,000 372,068 0.25% 472,000 31,800 0.277    N/A
   (PJT)1 Year Chart         PJT PreferredPlus Trust 96 - $95.94 $5,620,000 55,166 0.25% 1,232,000 -70 0.232    N/A
   (AR)1 Year Chart         AR Antero Resources Corp 97 - $31.44 $5,587,000 246,340 0.25% -60,000 23,860 0.092    Oil & Gas Drilling & ...
   (FLR)1 Year Chart         FLR Fluor Corp 98 - $40.30 $5,557,000 141,860 0.25% 1,578,000 33,430 0.101    Heavy Construction
   (CSX)1 Year Chart         CSX CSX Corp 99 - $33.67 $5,395,000 155,610 0.24% 610,000 0 0.007    Railroads
   (GKOS)1 Year Chart         GKOS Glaukos Corp 100 - $100.93 $5,370,000 67,560 0.24% -72,000 -4,760 0.14    N/A

      100 Records Found
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