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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) |
|---|---|---|---|---|---|
| MICRON TECHNOLOGY INC | COM | 595112103 | — | 7,890 shares | $9,107,348 |
| WW GRAINGER INC | COM | 384802104 | — | 6,610 shares | $8,992,244 |
| OPENLANE INC | COM | 48238T109 | — | 217,210 shares | $8,957,740 |
| SELECT SECTOR SPDR TR | ST STR CARE ETF | 81369Y209 | — | 56,130 shares | $8,905,586 |
| TRANSOCEAN LTD | REGISTERED SHS | H8817H100 | — | 1,813,160 shares | $8,866,352 |
| ELANCO ANIMAL HEALTH INC | COM | 28414H103 | — | 358,880 shares | $8,832,037 |
| TERAWULF INC | COM | 88080T104 | — | 353,080 shares | $8,721,076 |
| ENOVA INTL INC | COM | 29357K103 | — | 36,070 shares | $8,683,131 |
| INTEL CORP | COM | 458140100 | — | 61,560 shares | $8,595,623 |
| RUSH ENTERPRISES INC | CL A | 781846209 | — | 113,950 shares | $8,316,641 |
| TG THERAPEUTICS INC | COM | 88322Q108 | — | 150,990 shares | $8,295,391 |
| FASTENAL CO | COM | 311900104 | — | 171,420 shares | $8,233,303 |
| CHARLES RIV LABS INTL INC | COM | 159864107 | — | 36,045 shares | $8,174,646 |
| PRAXIS PRECISION MEDICINES I | COM NEW | 74006W207 | — | 24,390 shares | $8,165,528 |
| F5 INC | COM | 315616102 | — | 19,550 shares | $8,132,018 |
| LINCOLN EDL SVCS CORP | COM | 533535100 | — | 162,910 shares | $8,129,209 |
| BRUKER CORP | COM | 116794108 | — | 134,270 shares | $8,080,369 |
| CF INDUSTRIES HOLD | COM | 125269100 | — | 73,610 shares | $7,969,019 |
| LIBERTY ENERGY INC | COM CL A | 53115L104 | — | 296,629 shares | $7,768,714 |
| MOLINA HEALTHCARE INC | COM | 60855R100 | — | 33,790 shares | $7,727,773 |
| RANGE RES CORP | COM | 75281A109 | — | 205,260 shares | $7,633,619 |
| PENN ENTERTAINMENT INC | COM | 707569109 | — | 351,920 shares | $7,517,011 |
| MODINE MFG CO | COM | 607828100 | — | 27,970 shares | $7,468,549 |
| HYATT HOTELS CORP | COM CL A | 448579102 | — | 38,080 shares | $7,381,427 |
| PLANET LABS PBC | COM CL A | 72703X106 | — | 221,450 shares | $7,336,639 |
| ALLISON TRANSMISSION HLDGS I | COM | 01973R101 | — | 64,910 shares | $7,317,953 |
| PAYMENTUS HOLDINGS INC | COM CL A | 70439P108 | — | 298,540 shares | $7,212,726 |
| MURPHY USA INC | COM | 626755102 | — | 13,280 shares | $7,156,194 |
| PLEXUS CORP | COM | 729132100 | — | 23,750 shares | $7,140,913 |
| TEXAS ROADHOUSE INC | COM | 882681109 | — | 36,490 shares | $7,050,963 |
| HERC HLDGS INC | COM | 42704L104 | — | 48,490 shares | $6,950,557 |
| MSC INDL DIRECT INC | CL A | 553530106 | — | 58,250 shares | $6,928,838 |
| STIFEL FINL CORP | COM | 860630102 | — | 98,210 shares | $6,852,112 |
| CAVA GROUP INC | COM | 148929102 | — | 86,440 shares | $6,783,811 |
| QUEST DIAGNOSTICS INC | COM | 74834L100 | — | 31,480 shares | $6,672,186 |
| API GROUP CORP | COM STK | 00187Y100 | — | 152,813 shares | $6,471,631 |
| CHENIERE ENERGY INC | COM NEW | 16411R208 | — | 26,526 shares | $6,339,979 |
| REGAL REXNORD CORPORATION | COM | 758750103 | — | 26,330 shares | $6,271,543 |
| QXO INC | COM NEW | 82846H405 | — | 362,257 shares | $6,259,801 |
| PROTAGONIST THERAPEUTICS INC | COM | 74366E102 | — | 50,570 shares | $6,198,871 |
| AAON INC | COM PAR $0.004 | 000360206 | — | 48,720 shares | $6,180,619 |
| CENTURI HOLDINGS INC | COM SHS | 155923105 | — | 203,830 shares | $6,163,819 |
| JAMES HARDIE INDS PLC | ORD SHS | G4253H101 | — | 233,750 shares | $6,119,575 |
| WYNDHAM HOTELS & RESORTS INC | COM | 98311A105 | — | 72,400 shares | $6,096,804 |
| ADVANCED ENERGY INDS | COM | 007973100 | — | 16,193 shares | $6,037,884 |
| KRYSTAL BIOTECH INC | COM | 501147102 | — | 16,150 shares | $6,002,471 |
| BRIDGEBIO PHARMA INC | COM | 10806X102 | — | 78,497 shares | $5,846,457 |
| ISHARES TR | RUS 1000 VAL ETF | 464287598 | — | 24,040 shares | $5,828,017 |
| TEREX CORP NEW | COM | 880779103 | — | 79,900 shares | $5,783,961 |
| ISHARES INC | MSCI AUST ETF | 464286103 | — | 205,060 shares | $5,774,490 |
| TARGA RES CORP | COM | 87612G101 | — | 21,510 shares | $5,767,691 |
| VITA COCO CO INC | COM | 92846Q107 | — | 86,960 shares | $5,751,534 |
| MARATHON PETE CORP | COM | 56585A102 | — | 22,400 shares | $5,727,008 |
| ROBINHOOD MKTS INC | COM CL A | 770700102 | — | 56,720 shares | $5,687,882 |
| EXPAND ENERGY CORPORATION | COM | 165167735 | — | 61,230 shares | $5,583,564 |
| DIGITALOCEAN HLDGS INC | COM | 25402D102 | — | 35,537 shares | $5,580,375 |
| AXSOME THERAPEUTICS INC. | COM | 05464T104 | — | 22,083 shares | $5,405,256 |
| TTM TECHNOLOGIES INC | COM | 87305R109 | — | 28,090 shares | $5,253,392 |
| STANDEX INTL CORP | COM | 854231107 | — | 14,470 shares | $5,175,485 |
| SMUCKER J M CO | COM NEW | 832696405 | — | 45,160 shares | $5,080,500 |
| SPDR GOLD TR | GOLD SHS | 78463V107 | — | 13,575 shares | $5,000,759 |
| PERMIAN RESOURCES CORP | CLASS A COM | 71424F105 | — | 270,950 shares | $4,988,190 |
| GENIUS SPORTS LIMITED | SHARES CL A | G3934V109 | — | 806,820 shares | $4,889,329 |
| BRUNSWICK CORP | COM | 117043109 | — | 56,720 shares | $4,778,093 |
| ARGAN INC | COM | 04010E109 | — | 5,960 shares | $4,759,358 |
| CORNING INC | COM | 219350105 | — | 18,470 shares | $4,717,792 |
| TC ENERGY CORP | COM | 87807B107 | — | 70,370 shares | $4,664,827 |
| IONQ INC | COM | 46222L108 | — | 86,310 shares | $4,596,871 |
| ENERGY TRANSFER L P | COM UT LTD PTN | 29273V100 | — | 238,240 shares | $4,555,149 |
| BANDWIDTH INC | COM CL A | 05988J103 | — | 68,880 shares | $4,360,104 |
| D-WAVE QUANTUM INC | COM | 26740W109 | — | 179,690 shares | $4,310,763 |
| SPACE EXPLORATION TECHN CORP | CLASS A COM STK | 84615Q103 | — | 25,180 shares | $4,302,255 |
| VERACYTE INC | COM | 92337F107 | — | 72,016 shares | $4,229,500 |
| HOME DEPOT INC | COM | 437076102 | — | 11,590 shares | $4,087,561 |
| NLIGHT INC | COM | 65487K100 | — | 58,100 shares | $4,044,922 |
| CHAMPION HOMES INC | COM | 830830105 | — | 45,670 shares | $4,024,440 |
| SERVICETITAN INC | SHS CL A | 81764X103 | — | 55,890 shares | $3,951,982 |
| INVESCO QQQ TR | UNIT SER 1 | 46090E103 | — | 5,320 shares | $3,917,648 |
| COGENT BIOSCIENCES INC | COM | 19240Q201 | — | 99,870 shares | $3,864,969 |
| XENON PHARMACEUTICALS INC | COM | 98420N105 | — | 61,763 shares | $3,728,015 |
| DELL TECHNOLOGIES INC | CL C | 24703L202 | — | 8,540 shares | $3,684,668 |
| KINDER MORGAN INC DEL | COM | 49456B101 | — | 114,730 shares | $3,667,918 |
| ARCUTIS BIOTHERAPEUTICS INC | COM | 03969K108 | — | 137,420 shares | $3,603,152 |
| MICROCHIP TECHNOLOGY INC. | COM | 595017104 | — | 34,000 shares | $3,100,800 |
| ONEOK INC NEW | COM | 682680103 | — | 34,458 shares | $2,995,779 |
| TECHNIPFMC PLC | COM | G87110105 | — | 44,676 shares | $2,962,019 |
| ENTERPRISE PRODS PARTNERS L | COM | 293792107 | — | 79,461 shares | $2,920,986 |
| PTC THERAPEUTICS INC | COM | 69366J200 | — | 33,900 shares | $2,765,223 |
| EXXON MOBIL CORP | COM | 30231G102 | — | 20,170 shares | $2,757,642 |
| TOLL BROTHERS INC | COM | 889478103 | — | 16,573 shares | $2,730,402 |
| ENBRIDGE INC | COM | 29250N105 | — | 50,340 shares | $2,728,931 |
| MADRIGAL PHARMACEUTICALS INC | COM | 558868105 | — | 5,076 shares | $2,725,558 |
| COSTCO WHOLESALE CORPORATION | COM | 22160K105 | — | 2,800 shares | $2,619,316 |
| OCCIDENTAL PETE CORP | COM | 674599105 | — | 52,585 shares | $2,554,053 |
| ISHARES INC | MSCI STH KOR ETF | 464286772 | — | 12,560 shares | $2,535,864 |
| EXTREME NETWORKS INC | COM | 30226D106 | — | 77,040 shares | $2,493,785 |
| ALPHABET INC | CAP STK CL C | 02079K107 | — | 7,000 shares | $2,473,310 |
| SPYRE THERAPEUTICS INC | COM NEW | 00773J202 | — | 26,420 shares | $2,345,568 |
| ISHARES TR | RUS MD CP GR ETF | 464287481 | — | 16,000 shares | $2,342,560 |
| STERLING INFRASTRUCTURE INC | COM | 859241101 | — | 2,610 shares | $2,190,730 |