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CASTLEARK MANAGEMENT LLC
Period ended Jun 30, 2026 · Latest filing Aug 14, 2026
These quarterly holdings are delayed and may not include all assets or short positions.
Values are from the reporting date, not current prices or purchase costs.
The same security may appear in multiple rows.
Source: SEC
Reported portfolio value
Quarter-end reported holdings; not current value or investment performance.
View reported values
- Jun 30, 2026: $3,709,338,225
More quarters will appear as history becomes available.
Top holdings
Top 10 at Jun 30, 2026. Matching entries are combined; security classes and options remain separate. Shares exclude principal amounts; option shares reflect the reported underlying amount.
View top holdings values
- NVIDIA CORPORATION · COM · 67066G104 · shares: $260,037,964
- ALPHABET INC · CAP STK CL A · 02079K305 · shares: $181,219,825
- APPLE INC · COM · 037833100 · shares: $136,609,171
- LAM RESEARCH CORP · COM NEW · 512807306 · shares: $122,982,521
- MICROSOFT CORP · COM · 594918104 · shares: $109,209,065
- ELI LILLY & CO · COM · 532457108 · shares: $105,186,413
- BROADCOM INC · COM · 11135F101 · shares: $92,131,714
- SPDR SERIES TRUST · ST INTER BD ETF · 78464A375 · shares: $89,953,195
- VISA INC · COM CL A · 92826C839 · shares: $81,026,193
- ARISTA NETWORKS INC · COM SHS · 040413205 · shares: $80,407,432
Reported holdings
309 reported entries| Issuer | Class | CUSIP | Type | Shares / principal | Reported value (USD) |
|---|---|---|---|---|---|
| NVIDIA CORPORATION | COM | 67066G104 | — | 1,299,605 shares | $260,037,964 |
| ALPHABET INC | CAP STK CL A | 02079K305 | — | 507,093 shares | $181,219,825 |
| APPLE INC | COM | 037833100 | — | 472,108 shares | $136,609,171 |
| LAM RESEARCH CORP | COM NEW | 512807306 | — | 283,808 shares | $122,982,521 |
| MICROSOFT CORP | COM | 594918104 | — | 292,770 shares | $109,209,065 |
| ELI LILLY & CO | COM | 532457108 | — | 87,697 shares | $105,186,413 |
| BROADCOM INC | COM | 11135F101 | — | 243,896 shares | $92,131,714 |
| SPDR SERIES TRUST | ST INTER BD ETF | 78464A375 | — | 2,688,380 shares | $89,953,195 |
| VISA INC | COM CL A | 92826C839 | — | 236,166 shares | $81,026,193 |
| ARISTA NETWORKS INC | COM SHS | 040413205 | — | 473,319 shares | $80,407,432 |
| ISHARES TR | US TREAS BD ETF | 46429B267 | — | 3,329,569 shares | $75,847,582 |
| VANGUARD SCOTTSDALE FDS | MTG-BKD SECS ETF | 92206C771 | — | 1,487,800 shares | $69,643,918 |
| ADVANCED MICRO DEVICES INC | COM | 007903107 | — | 118,865 shares | $69,049,867 |
| GILEAD SCIENCES INC | COM | 375558103 | — | 527,542 shares | $66,649,656 |
| AMAZON COM INC | COM | 023135106 | — | 268,249 shares | $63,934,467 |
| GE VERNOVA INC | COM | 36828A101 | — | 46,101 shares | $54,162,221 |
| META PLATFORMS INC | CL A | 30303M102 | — | 93,744 shares | $52,805,058 |
| ANALOG DEVICES INC | COM | 032654105 | — | 120,934 shares | $48,031,357 |
| MASTERCARD INCORPORATED | CL A | 57636Q104 | — | 91,462 shares | $46,974,883 |
| MORGAN STANLEY | COM NEW | 617446448 | — | 208,542 shares | $43,593,620 |
| SNOWFLAKE INC | COM SHS | 833445109 | — | 166,818 shares | $42,455,181 |
| VERTIV HOLDINGS CO | COM CL A | 92537N108 | — | 123,901 shares | $41,484,533 |
| TAPESTRY INC | COM | 876030107 | — | 265,749 shares | $38,900,339 |
| SPDR SERIES TRUST | ST SHO TREAS ETF | 78468R101 | — | 1,334,080 shares | $38,701,661 |
| VANGUARD SCOTTSDALE FDS | LG-TERM COR BD | 92206C813 | — | 448,330 shares | $33,736,833 |
| SERVICENOW INC | COM | 81762P102 | — | 321,623 shares | $31,930,731 |
| ISHARES TR | 10-20 YR TRS ETF | 464288653 | — | 258,432 shares | $25,933,651 |
| BOOKING HOLDINGS INC | COM | 09857L108 | — | 136,776 shares | $24,378,954 |
| MOODYS CORP | COM | 615369105 | — | 53,444 shares | $24,205,856 |
| TESLA INC | COM | 88160R101 | — | 48,070 shares | $20,218,242 |
| CATERPILLAR INC | COM | 149123101 | — | 18,980 shares | $20,211,802 |
| GE AEROSPACE | COM NEW | 369604301 | — | 52,830 shares | $19,744,156 |
| TAIWAN SEMICONDUCTOR MANUFAC | SPONSORED ADS | 874039100 | — | 41,210 shares | $19,680,660 |
| LIGAND PHARMACEUTICALS INC | COM NEW | 53220K504 | — | 62,043 shares | $19,611,172 |
| SHARKNINJA INC | COM SHS | G8068L108 | — | 127,170 shares | $19,364,176 |
| ISHARES TR | MBS ETF | 464288588 | — | 204,235 shares | $19,304,292 |
| TWILIO INC | CL A | 90138F102 | — | 92,390 shares | $19,062,829 |
| BAKER HUGHES COMPANY | CL A | 05722G100 | — | 330,020 shares | $18,316,110 |
| GARRETT MOTION INC | COM | 366505105 | — | 469,470 shares | $17,008,898 |
| JPMORGAN CHASE & CO | COM | 46625H100 | — | 50,525 shares | $16,538,348 |
| ASCENDIS PHARMA A/S | ORD SHS | K08588103 | — | 61,696 shares | $16,455,557 |
| HUNT J B TRANS SVCS INC | COM | 445658107 | — | 56,520 shares | $16,358,584 |
| DIAMONDBACK ENERGY INC | COM | 25278X109 | — | 90,680 shares | $15,939,730 |
| GENERAL MTRS CO | COM | 37045V100 | — | 199,440 shares | $15,372,835 |
| BRIGHTSPRING HEALTH SVCS INC | COM | 10950A106 | — | 212,430 shares | $14,814,868 |
| SEMTECH CORP | COM | 816850101 | — | 91,218 shares | $14,763,633 |
| FIRSTCASH HOLDINGS INC | COM | 33768G107 | — | 68,190 shares | $14,750,861 |
| MARRIOTT INTL INC NEW | CL A | 571903202 | — | 37,910 shares | $14,049,067 |
| ISHARES TR | ISHS 5-10YR INVT | 464288638 | — | 259,994 shares | $13,823,881 |
| TJX COS INC NEW | COM | 872540109 | — | 90,620 shares | $13,728,930 |
| UBER TECHNOLOGIES INC | COM | 90353T100 | — | 189,417 shares | $13,668,331 |
| ULTRA CLEAN HLDGS INC | COM | 90385V107 | — | 95,770 shares | $13,655,844 |
| NOVANTA INC | COM | 67000B104 | — | 83,190 shares | $13,496,746 |
| AXON ENTERPRISE INC | COM | 05464C101 | — | 23,423 shares | $13,131,168 |
| BOEING CO | COM | 097023105 | — | 59,520 shares | $12,884,294 |
| SPDR SERIES TRUST | ST STR SP BIOT | 78464A870 | — | 80,890 shares | $12,800,843 |
| ELEMENT SOLUTIONS INC | COM | 28618M106 | — | 263,644 shares | $12,589,001 |
| MYR GROUP INC | COM | 55405W104 | — | 24,920 shares | $12,469,968 |
| GUARDANT HEALTH INC | COM | 40131M109 | — | 80,293 shares | $12,046,359 |
| ISHARES TR | 20 YR TR BD ETF | 464287432 | — | 137,270 shares | $11,862,873 |
| JFROG LTD | ORD SHS | M6191J100 | — | 129,480 shares | $11,767,142 |
| CITIGROUP INC | COM NEW | 172967424 | — | 83,734 shares | $11,719,411 |
| XPO INC | COM | 983793100 | — | 57,079 shares | $11,717,748 |
| KULICKE & SOFFA INDS INC | COM | 501242101 | — | 86,950 shares | $11,630,432 |
| HEALTHEQUITY INC | COM | 42226A107 | — | 127,770 shares | $11,540,186 |
| XOMETRY INC | CLASS A COM | 98423F109 | — | 117,518 shares | $11,342,837 |
| LATTICE SEMICONDUCTOR CORP | COM | 518415104 | — | 73,979 shares | $11,315,828 |
| JAZZ PHARMACEUTICALS PLC | SHS USD | G50871105 | — | 46,920 shares | $11,306,312 |
| HELIOS TECHNOLOGIES INC | COM | 42328H109 | — | 125,409 shares | $11,192,753 |
| KINIKSA PHARMACEUTICALS INTL | ORD SHS CL A | G52694109 | — | 174,032 shares | $11,129,346 |
| ESCO TECHNOLOGIES INC | COM | 296315104 | — | 31,572 shares | $11,051,463 |
| VSE CORP | COM | 918284100 | — | 48,216 shares | $11,017,356 |
| TIMKEN CO | COM | 887389104 | — | 75,400 shares | $10,957,128 |
| HEXCEL CORP NEW | COM | 428291108 | — | 106,050 shares | $10,611,363 |
| BORGWARNER INC | COM | 099724106 | — | 158,726 shares | $10,539,406 |
| AAR CORP | COM | 000361105 | — | 73,664 shares | $10,528,796 |
| WALMART INC | COM | 931142103 | — | 91,570 shares | $10,371,218 |
| CROCS INC | COM | 227046109 | — | 85,810 shares | $10,352,118 |
| EQT CORP | COM | 26884L109 | — | 193,845 shares | $10,306,739 |
| SENSIENT TECHNOLOGIES CORP | COM | 81725T100 | — | 82,920 shares | $10,223,207 |
| MAXLINEAR INC | COM | 57776J100 | — | 79,780 shares | $10,214,233 |
| SOLARIS ENERGY INFRAS INC | COM CL A | 83418M103 | — | 125,806 shares | $10,122,351 |
| EVERCORE INC | CLASS A | 29977A105 | — | 29,266 shares | $9,992,583 |
| SHOPIFY INC | CL A SUB VTG SHS | 82509L107 | — | 87,164 shares | $9,952,386 |
| ALLEGRO MICROSYSTEMS INC | COM | 01749D105 | — | 141,900 shares | $9,879,078 |
| UL SOLUTIONS INC | CLASS A COM SHS | 903731107 | — | 96,780 shares | $9,858,011 |
| WILLIAMS COS INC | COM | 969457100 | — | 131,770 shares | $9,795,782 |
| CASELLA WASTE SYS INC | CL A | 147448104 | — | 100,460 shares | $9,741,606 |
| CARDINAL INFRASTRUCTURE GROU | CL A | 14154A102 | — | 103,023 shares | $9,704,767 |
| SOLSTICE ADVANCED MATLS INC | COM SHS | 83443Q103 | — | 108,980 shares | $9,655,628 |
| DYCOM INDS INC | COM | 267475101 | — | 18,816 shares | $9,513,181 |
| RALLIANT CORP | COM | 750940108 | — | 128,740 shares | $9,479,126 |
| WESCO INTL INC | COM | 95082P105 | — | 27,347 shares | $9,446,474 |
| WILLSCOT HLDGS CORP | COM CL A | 971378104 | — | 325,950 shares | $9,406,917 |
| KNIGHT-SWIFT TRANSN HLDGS IN | CL A | 499049104 | — | 120,560 shares | $9,388,007 |
| LIFE TIME GROUP HOLDINGS INC | COMMON STOCK | 53190C102 | — | 229,298 shares | $9,364,530 |
| COGNEX CORP | COM | 192422103 | — | 128,730 shares | $9,322,627 |
| AMERICAN EXPRESS CO | COM | 025816109 | — | 27,295 shares | $9,232,534 |
| ASSOCIATED BANC-CORP | COM | 045487105 | — | 299,403 shares | $9,212,630 |
| BROOKDALE SR LIVING INC | COM | 112463104 | — | 570,084 shares | $9,172,652 |