Holders — by stockHoldings — by fund
CASTLEARK MANAGEMENT LLC
Everything this manager disclosed owning in US-listed stocks — its complete Form 13F portfolio · as of 2026-06-30 · filed with the SEC up to 45 days after quarter end · CIK 1106832
$3.71B
disclosed book value
309
positions
7%
largest position share
Positions, as of 2026-06-30
top 100 of 309 · 13F covers long US-listed positions only — cash, bonds, private and foreign stakes are not disclosed · PUT/CALL tags = options positions (share-equivalents), not shares held
| # | Issuer | Shares | Value | % of book |
|---|---|---|---|---|
| 1 | NVDANVIDIA CORPORATION | 1.3M | $260.0M | 7% |
| 2 | GOOGLALPHABET INC | 507,093 | $181.2M | 4.9% |
| 3 | AAPLAPPLE INC | 472,108 | $136.6M | 3.7% |
| 4 | LRCXLAM RESEARCH CORP | 283,808 | $123.0M | 3.3% |
| 5 | MSFTMICROSOFT CORP | 292,770 | $109.2M | 2.9% |
| 6 | LLYELI LILLY & CO | 87,697 | $105.2M | 2.8% |
| 7 | AVGOBROADCOM INC | 243,896 | $92.1M | 2.5% |
| 8 | SPIBSPDR SERIES TRUST | 2.7M | $90.0M | 2.4% |
| 9 | VVISA INC | 236,166 | $81.0M | 2.2% |
| 10 | ANETARISTA NETWORKS INC | 473,319 | $80.4M | 2.2% |
| 11 | GOVTISHARES TR | 3.3M | $75.8M | 2% |
| 12 | VMBSVANGUARD SCOTTSDALE FDS | 1.5M | $69.6M | 1.9% |
| 13 | AMDADVANCED MICRO DEVICES INC | 118,865 | $69.0M | 1.9% |
| 14 | GILDGILEAD SCIENCES INC | 527,542 | $66.6M | 1.8% |
| 15 | AMZNAMAZON COM INC | 268,249 | $63.9M | 1.7% |
| 16 | GEVGE VERNOVA INC | 46,101 | $54.2M | 1.5% |
| 17 | METAMETA PLATFORMS INC | 93,744 | $52.8M | 1.4% |
| 18 | ADIANALOG DEVICES INC | 120,934 | $48.0M | 1.3% |
| 19 | MAMASTERCARD INCORPORATED | 91,462 | $47.0M | 1.3% |
| 20 | MSMORGAN STANLEY | 208,542 | $43.6M | 1.2% |
| 21 | SNOWSNOWFLAKE INC | 166,818 | $42.5M | 1.1% |
| 22 | VRTVERTIV HOLDINGS CO | 123,901 | $41.5M | 1.1% |
| 23 | TPRTAPESTRY INC | 265,749 | $38.9M | 1% |
| 24 | SPTSSPDR SERIES TRUST | 1.3M | $38.7M | 1% |
| 25 | VCLTVANGUARD SCOTTSDALE FDS | 448,330 | $33.7M | 0.9% |
| 26 | NOWSERVICENOW INC | 321,623 | $31.9M | 0.9% |
| 27 | TLHISHARES TR | 258,432 | $25.9M | 0.7% |
| 28 | BKNGBOOKING HOLDINGS INC | 136,776 | $24.4M | 0.7% |
| 29 | MCOMOODYS CORP | 53,444 | $24.2M | 0.7% |
| 30 | TSLATESLA INC | 48,070 | $20.2M | 0.5% |
| 31 | CATCATERPILLAR INC | 18,980 | $20.2M | 0.5% |
| 32 | GEGE AEROSPACE | 52,830 | $19.7M | 0.5% |
| 33 | TSMTAIWAN SEMICONDUCTOR MANUFAC | 41,210 | $19.7M | 0.5% |
| 34 | LGNDLIGAND PHARMACEUTICALS INC | 62,043 | $19.6M | 0.5% |
| 35 | SHARKNINJA INC | 127,170 | $19.4M | 0.5% |
| 36 | MBBISHARES TR | 204,235 | $19.3M | 0.5% |
| 37 | TWLOTWILIO INC | 92,390 | $19.1M | 0.5% |
| 38 | BKRBAKER HUGHES COMPANY | 330,020 | $18.3M | 0.5% |
| 39 | GTXGARRETT MOTION INC | 469,470 | $17.0M | 0.5% |
| 40 | JPMJPMORGAN CHASE & CO | 50,525 | $16.5M | 0.4% |
| 41 | ASCENDIS PHARMA A/S | 61,696 | $16.5M | 0.4% |
| 42 | JBHTHUNT J B TRANS SVCS INC | 56,520 | $16.4M | 0.4% |
| 43 | FANGDIAMONDBACK ENERGY INC | 90,680 | $15.9M | 0.4% |
| 44 | GMGENERAL MTRS CO | 199,440 | $15.4M | 0.4% |
| 45 | BTSGBRIGHTSPRING HEALTH SVCS INC | 212,430 | $14.8M | 0.4% |
| 46 | SMTCSEMTECH CORP | 91,218 | $14.8M | 0.4% |
| 47 | FCFSFIRSTCASH HOLDINGS INC | 68,190 | $14.8M | 0.4% |
| 48 | MARMARRIOTT INTL INC NEW | 37,910 | $14.0M | 0.4% |
| 49 | IGIBISHARES TR | 259,994 | $13.8M | 0.4% |
| 50 | TJXTJX COS INC NEW | 90,620 | $13.7M | 0.4% |
| 51 | UBERUBER TECHNOLOGIES INC | 189,417 | $13.7M | 0.4% |
| 52 | UCTTULTRA CLEAN HLDGS INC | 95,770 | $13.7M | 0.4% |
| 53 | NOVTNOVANTA INC | 83,190 | $13.5M | 0.4% |
| 54 | AXONAXON ENTERPRISE INC | 23,423 | $13.1M | 0.4% |
| 55 | BABOEING CO | 59,520 | $12.9M | 0.3% |
| 56 | XBISPDR SERIES TRUST | 80,890 | $12.8M | 0.3% |
| 57 | ESIELEMENT SOLUTIONS INC | 263,644 | $12.6M | 0.3% |
| 58 | MYRGMYR GROUP INC | 24,920 | $12.5M | 0.3% |
| 59 | GHGUARDANT HEALTH INC | 80,293 | $12.0M | 0.3% |
| 60 | TLTISHARES TR | 137,270 | $11.9M | 0.3% |
| 61 | JFROG LTD | 129,480 | $11.8M | 0.3% |
| 62 | CCITIGROUP INC | 83,734 | $11.7M | 0.3% |
| 63 | XPOXPO INC | 57,079 | $11.7M | 0.3% |
| 64 | KLICKULICKE & SOFFA INDS INC | 86,950 | $11.6M | 0.3% |
| 65 | HQYHEALTHEQUITY INC | 127,770 | $11.5M | 0.3% |
| 66 | XMTRXOMETRY INC | 117,518 | $11.3M | 0.3% |
| 67 | LSCCLATTICE SEMICONDUCTOR CORP | 73,979 | $11.3M | 0.3% |
| 68 | JAZZ PHARMACEUTICALS PLC | 46,920 | $11.3M | 0.3% |
| 69 | HLIOHELIOS TECHNOLOGIES INC | 125,409 | $11.2M | 0.3% |
| 70 | KINIKSA PHARMACEUTICALS INTL | 174,032 | $11.1M | 0.3% |
| 71 | ESEESCO TECHNOLOGIES INC | 31,572 | $11.1M | 0.3% |
| 72 | VSECVSE CORP | 48,216 | $11.0M | 0.3% |
| 73 | TKRTIMKEN CO | 75,400 | $11.0M | 0.3% |
| 74 | HXLHEXCEL CORP NEW | 106,050 | $10.6M | 0.3% |
| 75 | BWABORGWARNER INC | 158,726 | $10.5M | 0.3% |
| 76 | AIRAAR CORP | 73,664 | $10.5M | 0.3% |
| 77 | WMTWALMART INC | 91,570 | $10.4M | 0.3% |
| 78 | CROXCROCS INC | 85,810 | $10.4M | 0.3% |
| 79 | EQTEQT CORP | 193,845 | $10.3M | 0.3% |
| 80 | SXTSENSIENT TECHNOLOGIES CORP | 82,920 | $10.2M | 0.3% |
| 81 | MXLMAXLINEAR INC | 79,780 | $10.2M | 0.3% |
| 82 | SEISOLARIS ENERGY INFRAS INC | 125,806 | $10.1M | 0.3% |
| 83 | EVREVERCORE INC | 29,266 | $10.0M | 0.3% |
| 84 | SHOPSHOPIFY INC | 87,164 | $10.0M | 0.3% |
| 85 | ALGMALLEGRO MICROSYSTEMS INC | 141,900 | $9.9M | 0.3% |
| 86 | ULSUL SOLUTIONS INC | 96,780 | $9.9M | 0.3% |
| 87 | WMBWILLIAMS COS INC | 131,770 | $9.8M | 0.3% |
| 88 | CWSTCASELLA WASTE SYS INC | 100,460 | $9.7M | 0.3% |
| 89 | CARDINAL INFRASTRUCTURE GROU | 103,023 | $9.7M | 0.3% |
| 90 | SOLSSOLSTICE ADVANCED MATLS INC | 108,980 | $9.7M | 0.3% |
| 91 | DYDYCOM INDS INC | 18,816 | $9.5M | 0.3% |
| 92 | RALRALLIANT CORP | 128,740 | $9.5M | 0.3% |
| 93 | WCCWESCO INTL INC | 27,347 | $9.4M | 0.3% |
| 94 | WSCWILLSCOT HLDGS CORP | 325,950 | $9.4M | 0.3% |
| 95 | KNXKNIGHT-SWIFT TRANSN HLDGS IN | 120,560 | $9.4M | 0.3% |
| 96 | LTHLIFE TIME GROUP HOLDINGS INC | 229,298 | $9.4M | 0.3% |
| 97 | CGNXCOGNEX CORP | 128,730 | $9.3M | 0.3% |
| 98 | AXPAMERICAN EXPRESS CO | 27,295 | $9.2M | 0.2% |
| 99 | ASBASSOCIATED BANC-CORP | 299,403 | $9.2M | 0.2% |
| 100 | BKDBROOKDALE SR LIVING INC | 570,084 | $9.2M | 0.2% |
Source: SEC Form 13F-HR, reporting period 2026-06-30. Values are the manager's filed June-30-style quarter-end marks, not live prices. Research, not investment advice.