CASTLEARK MANAGEMENT LLC
13F Reported Value
ⓘ$3.7B
Holdings
309
Latest Filing
2026-06-30
Filing Quarter
Q2 2026
Portfolio Overview
CASTLEARK MANAGEMENT LLC disclosed 309 positions worth $3.7B in its Form 13F-HR for Q2 2026, led by $NVDA (NVIDIA CORP) at 7.0% of the equity portfolio, followed by $GOOG and $AAPL. During the quarter the fund opened 58 new positions and exited 41 — including a new stake in $SN and a full exit from $ULTA. The portfolio is most concentrated in Technology (42.3% of disclosed assets). All figures are sourced directly from CASTLEARK MANAGEMENT LLC’s Form 13F-HR filing with the SEC under CIK 1106832.
AI Fund Analysis
ConcentratingSector Allocation
AUM History
Top Equity Holdings by Value
Quarterly Activity — Q2 2026
Click any card to unlockTop Holdings
- 85.9#5
Quality
$260.0M1,299,605 sh - 78.2#57
Quality
$181.2M507,093 sh - 76.4#84
Quality
$136.6M472,108 sh - 79.4
Quality
$123.0M283,808 sh - 79.8
Quality
$109.2M292,770 sh - 87.5
Quality
$105.2M87,697 sh - 84.5
Quality
$92.1M243,896 sh SPDR SERIES TRUST - ST INTER BD ETF
—Quality
$90.0M2,688,380 sh- 82.9
Quality
$81.0M236,166 sh - 81.9
Quality
$80.4M473,319 sh
| Company | Quality | Value | Shares |
|---|---|---|---|
 NVIDIA CORP$NVDA | 85.9#5 | $260.0M | 1,299,605 |
 Alphabet Inc.$GOOG | 78.2#57 | $181.2M | 507,093 |
 Apple Inc.$AAPL | 76.4#84 | $136.6M | 472,108 |
 LAM RESEARCH CORP$LRCX | 79.4 | $123.0M | 283,808 |
 MICROSOFT CORP$MSFT | 79.8 | $109.2M | 292,770 |
 ELI LILLY & Co$LLY | 87.5 | $105.2M | 87,697 |
 Broadcom Inc.$AVGO | 84.5 | $92.1M | 243,896 |
| SPDR SERIES TRUST - ST INTER BD ETF | — | $90.0M | 2,688,380 |
 VISA INC.$V | 82.9 | $81.0M | 236,166 |
 Arista Networks, Inc.$ANET | 81.9 | $80.4M | 473,319 |
Unlock AI quality scores for every holding
32-signal composite ranking on each of CASTLEARK MANAGEMENT LLC's 309 positions.
Showing top 10 of 309 holdings.
Sector Allocation
Technology
$1.6B
Other
$433.6M
Industrials
$426.6M
Healthcare
$373.2M
Consumer Discretionary
$321.2M
Financials
$290.0M
Energy
$198.4M
Materials
$55.6M
Top Holdings — CASTLEARK MANAGEMENT LLC (Q2 2026)
Top 150 of 309 disclosed positions (by reported value) from the latest Form 13F-HR, with quarter-over-quarter share changes and 13F Pro quality scores. Sourced from SEC EDGAR.
| # | Ticker | Company | Value | Weight | QoQ | Quality |
|---|---|---|---|---|---|---|
| 1 | $NVDA | NVIDIA CORP | $260.0M | 7.0% | +3% | 85.9 |
| 2 | $GOOG | Alphabet Inc. | $181.2M | 4.9% | +21% | 78.2 |
| 3 | $AAPL | Apple Inc. | $136.6M | 3.7% | +35% | 76.4 |
| 4 | $LRCX | LAM RESEARCH CORP | $123.0M | 3.3% | -16% | 79.4 |
| 5 | $MSFT | MICROSOFT CORP | $109.2M | 2.9% | +11% | 79.8 |
| 6 | $LLY | ELI LILLY & Co | $105.2M | 2.8% | +19% | 87.5 |
| 7 | $AVGO | Broadcom Inc. | $92.1M | 2.5% | +20% | 84.5 |
| 8 | — | SPDR SERIES TRUST - ST INTER BD ETF | $90.0M | 2.4% | +0% | — |
| 9 | $V | VISA INC. | $81.0M | 2.2% | +54% | 82.9 |
| 10 | $ANET | Arista Networks, Inc. | $80.4M | 2.2% | +10% | 81.9 |
| 11 | — | ISHARES TR - US TREAS BD ETF | $75.8M | 2.0% | +0% | — |
| 12 | — | VANGUARD SCOTTSDALE FDS - MTG-BKD SECS ETF | $69.6M | 1.9% | +0% | — |
| 13 |  $AMD | ADVANCED MICRO DEVICES INC | $69.0M | 1.9% | +34% | 79.8 |
| 14 |  $GILD | GILEAD SCIENCES, INC. | $66.6M | 1.8% | +54% | 57.4 |
| 15 |  $AMZN | AMAZON COM INC | $63.9M | 1.7% | +9% | 68.7 |
| 16 |  $GEV | GE Vernova Inc. | $54.2M | 1.5% | +11% | 81.1 |
| 17 |  $META | Meta Platforms, Inc. | $52.8M | 1.4% | -24% | 79.6 |
| 18 |  $ADI | ANALOG DEVICES INC | $48.0M | 1.3% | +55% | 79.2 |
| 19 |  $MA | Mastercard Inc | $47.0M | 1.3% | -1% | 85.1 |
| 20 |  $MS | MORGAN STANLEY | $43.6M | 1.2% | +781% | 75.8 |
| 21 |  $SNOW | Snowflake Inc. | $42.5M | 1.1% | +23% | 54.9 |
| 22 |  $VRT | Vertiv Holdings Co | $41.5M | 1.1% | +10% | 81 |
| 23 |  $TPR | TAPESTRY, INC. | $38.9M | 1.1% | +30% | 72.7 |
| 24 | — | SPDR SERIES TRUST - ST SHO TREAS ETF | $38.7M | 1.0% | +0% | — |
| 25 | — | VANGUARD SCOTTSDALE FDS - LG-TERM COR BD | $33.7M | 0.9% | +0% | — |
| 26 |  $NOW | ServiceNow, Inc. | $31.9M | 0.9% | +6% | 72.9 |
| 27 | — | ISHARES TR - 10-20 YR TRS ETF | $25.9M | 0.7% | +0% | — |
| 28 |  $BKNG | Booking Holdings Inc. | $24.4M | 0.7% | +2694% | 58.5 |
| 29 |  $MCO | MOODYS CORP /DE/ | $24.2M | 0.7% | +216% | 79.1 |
| 30 |  $TSLA | Tesla, Inc. | $20.2M | 0.6% | +23% | 53.9 |
| 31 |  $CAT | CATERPILLAR INC | $20.2M | 0.5% | +36% | 66.5 |
| 32 |  $GE | GENERAL ELECTRIC CO | $19.7M | 0.5% | +72% | 73.8 |
| 33 |  $TSM | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD | $19.7M | 0.5% | +0% | — |
| 34 |  $LGND | LIGAND PHARMACEUTICALS INC | $19.6M | 0.5% | +27% | 76 |
| 35 |  $SN | SharkNinja, Inc. | $19.4M | 0.5% | NEW | 66.8 |
| 36 | — | ISHARES TR - MBS ETF | $19.3M | 0.5% | +0% | — |
| 37 |  $TWLO | TWILIO INC | $19.1M | 0.5% | +245% | 70.4 |
| 38 |  $BKR | Baker Hughes Co | $18.3M | 0.5% | -15% | 60.7 |
| 39 |  $GTX | Garrett Motion Inc. | $17.0M | 0.5% | -4% | 56.8 |
| 40 |  $JPM | JPMORGAN CHASE & CO | $16.5M | 0.5% | +0% | 70.7 |
| 41 |  $ASND | Ascendis Pharma A/S | $16.5M | 0.4% | -9% | 44.8 |
| 42 |  $JBHT | HUNT J B TRANSPORT SERVICES INC | $16.4M | 0.4% | +150% | 60.2 |
| 43 |  $FANG | Diamondback Energy, Inc. | $15.9M | 0.4% | -37% | 76.1 |
| 44 |  $GM | General Motors Co | $15.4M | 0.4% | +101% | 54.3 |
| 45 |  $BTSG | BrightSpring Health Services, Inc. | $14.8M | 0.4% | -14% | 63.3 |
| 46 |  $SMTC | SEMTECH CORP | $14.8M | 0.4% | -15% | 55.9 |
| 47 |  $FCFS | FirstCash Holdings, Inc. | $14.8M | 0.4% | -4% | 69.3 |
| 48 |  $MAR | MARRIOTT INTERNATIONAL INC /MD/ | $14.0M | 0.4% | +353% | 61.7 |
| 49 | — | ISHARES TR - ISHS 5-10YR INVT | $13.8M | 0.4% | +0% | — |
| 50 |  $TJX | TJX COMPANIES INC /DE/ | $13.7M | 0.4% | +0% | 68.7 |
| 51 |  $UBER | Uber Technologies, Inc | $13.7M | 0.4% | +12% | 73.5 |
| 52 |  $UCTT | Ultra Clean Holdings, Inc. | $13.7M | 0.4% | -4% | 40.1 |
| 53 |  $NOVT | NOVANTA INC | $13.5M | 0.4% | +138% | 51.2 |
| 54 |  $AXON | AXON ENTERPRISE, INC. | $13.1M | 0.3% | +164% | 56.6 |
| 55 |  $BA | BOEING CO | $12.9M | 0.3% | +128% | 61.6 |
| 56 | — | SPDR SERIES TRUST - ST STR SP BIOT | $12.8M | 0.3% | +0% | — |
| 57 |  $ESI | Element Solutions Inc | $12.6M | 0.3% | -4% | 46.2 |
| 58 |  $MYRG | MYR GROUP INC. | $12.5M | 0.3% | +42% | 59.2 |
| 59 |  $GH | Guardant Health, Inc. | $12.0M | 0.3% | -50% | 39 |
| 60 | — | ISHARES TR - 20 YR TR BD ETF | $11.9M | 0.3% | +0% | — |
| 61 |  $FROG | JFrog Ltd | $11.8M | 0.3% | +39% | — |
| 62 |  $C | CITIGROUP INC | $11.7M | 0.3% | +76% | 65 |
| 63 |  $XPO | XPO, Inc. | $11.7M | 0.3% | +121% | 58.4 |
| 64 |  $KLIC | KULICKE & SOFFA INDUSTRIES INC | $11.6M | 0.3% | -18% | 57.2 |
| 65 |  $HQY | HEALTHEQUITY, INC. | $11.5M | 0.3% | +163% | 71.2 |
| 66 |  $XMTR | Xometry, Inc. | $11.3M | 0.3% | +115% | 48.3 |
| 67 |  $LSCC | LATTICE SEMICONDUCTOR CORP | $11.3M | 0.3% | -19% | 48.7 |
| 68 |  $JAZZ | Jazz Pharmaceuticals plc | $11.3M | 0.3% | -4% | — |
| 69 |  $HLIO | HELIOS TECHNOLOGIES, INC. | $11.2M | 0.3% | -22% | 54.6 |
| 70 |  $KNSA | Kiniksa Pharmaceuticals International, plc | $11.1M | 0.3% | -4% | — |
| 71 |  $ESE | ESCO TECHNOLOGIES INC | $11.1M | 0.3% | +77% | 70 |
| 72 |  $VSEC | VSE CORP | $11.0M | 0.3% | -4% | 56.5 |
| 73 |  $TKR | TIMKEN CO | $11.0M | 0.3% | +87% | 54.4 |
| 74 |  $HXL | HEXCEL CORP /DE/ | $10.6M | 0.3% | NEW | 58.1 |
| 75 |  $BWA | BORGWARNER INC | $10.5M | 0.3% | +7% | 56 |
| 76 |  $AIR | AAR CORP | $10.5M | 0.3% | +22% | 60.8 |
| 77 |  $WMT | Walmart Inc. | $10.4M | 0.3% | -19% | 60.2 |
| 78 |  $CROX | Crocs, Inc. | $10.4M | 0.3% | NEW | 58 |
| 79 |  $EQT | EQT Corp | $10.3M | 0.3% | +0% | 83.7 |
| 80 |  $SXT | SENSIENT TECHNOLOGIES CORP | $10.2M | 0.3% | NEW | 52.2 |
| 81 |  $MXL | MAXLINEAR, INC | $10.2M | 0.3% | NEW | 33.1 |
| 82 |  $SEI | Solaris Energy Infrastructure, Inc. | $10.1M | 0.3% | +33% | 56.4 |
| 83 |  $EVR | Evercore Inc. | $10.0M | 0.3% | -4% | 76.9 |
| 84 |  $SHOP | SHOPIFY INC. | $10.0M | 0.3% | -72% | 64.9 |
| 85 |  $ALGM | ALLEGRO MICROSYSTEMS, INC. | $9.9M | 0.3% | -4% | 47.6 |
| 86 |  $ULS | UL Solutions Inc. | $9.9M | 0.3% | NEW | 65.2 |
| 87 |  $WMB | WILLIAMS COMPANIES, INC. | $9.8M | 0.3% | +0% | 64.3 |
| 88 |  $CWST | CASELLA WASTE SYSTEMS INC | $9.7M | 0.3% | NEW | 57.1 |
| 89 |  $CDNL | Cardinal Infrastructure Group Inc. | $9.7M | 0.3% | NEW | 56.4 |
| 90 |  $SOLS | Solstice Advanced Materials Inc. | $9.7M | 0.3% | -4% | 61.6 |
| 91 |  $DY | DYCOM INDUSTRIES INC | $9.5M | 0.3% | -42% | 56.3 |
| 92 |  $RAL | Ralliant Corp | $9.5M | 0.3% | NEW | 37.1 |
| 93 |  $WCC | WESCO INTERNATIONAL INC | $9.4M | 0.3% | -4% | 48.8 |
| 94 |  $WSC | WillScot Holdings Corp | $9.4M | 0.3% | NEW | 47.5 |
| 95 |  $KNX | Knight-Swift Transportation Holdings Inc. | $9.4M | 0.3% | -4% | 54.4 |
| 96 |  $LTH | Life Time Group Holdings, Inc. | $9.4M | 0.3% | NEW | 60.9 |
| 97 |  $CGNX | COGNEX CORP | $9.3M | 0.3% | +17% | 66.9 |
| 98 |  $AXP | AMERICAN EXPRESS CO | $9.2M | 0.3% | +920% | 69.4 |
| 99 |  $ASB | ASSOCIATED BANC-CORP | $9.2M | 0.3% | -4% | 64.9 |
| 100 |  $BKD | Brookdale Senior Living Inc. | $9.2M | 0.3% | -5% | 44.1 |
| 101 |  $MU | MICRON TECHNOLOGY INC | $9.1M | 0.3% | -28% | 86.2 |
| 102 |  $GWW | W.W. GRAINGER, INC. | $9.0M | 0.2% | +18% | 61.8 |
| 103 |  $OPLN | OPENLANE, Inc. | $9.0M | 0.2% | NEW | 61 |
| 104 | — | SELECT SECTOR SPDR TR - ST STR CARE ETF | $8.9M | 0.2% | +0% | — |
| 105 |  $RIG | Transocean Ltd. | $8.9M | 0.2% | +117% | — |
| 106 |  $ELAN | Elanco Animal Health Inc | $8.8M | 0.2% | +1% | 48.7 |
| 107 |  $WULF | TERAWULF INC. | $8.7M | 0.2% | NEW | 33.8 |
| 108 |  $ENVA | Enova International, Inc. | $8.7M | 0.2% | -4% | 69.9 |
| 109 |  $INTC | INTEL CORP | $8.6M | 0.2% | NEW | 45.6 |
| 110 |  $RUSHA | RUSH ENTERPRISES INC \TX\ | $8.3M | 0.2% | NEW | 51.7 |
| 111 |  $TGTX | TG THERAPEUTICS, INC. | $8.3M | 0.2% | NEW | 69.3 |
| 112 |  $FAST | FASTENAL CO | $8.2M | 0.2% | +15% | 66.9 |
| 113 |  $CRL | CHARLES RIVER LABORATORIES INTERNATIONAL, INC. | $8.2M | 0.2% | -9% | 43.8 |
| 114 |  $PRAX | Praxis Precision Medicines, Inc. | $8.2M | 0.2% | NEW | — |
| 115 |  $FFIV | F5, INC. | $8.1M | 0.2% | NEW | 66.9 |
| 116 |  $LINC | LINCOLN EDUCATIONAL SERVICES CORP | $8.1M | 0.2% | +8% | 60.3 |
| 117 |  $BRKR | BRUKER CORP | $8.1M | 0.2% | NEW | 50.8 |
| 118 |  $CF | CF Industries Holdings, Inc. | $8.0M | 0.2% | -43% | 77.4 |
| 119 |  $LBRT | Liberty Energy Inc. | $7.8M | 0.2% | +12% | 42 |
| 120 |  $MOH | MOLINA HEALTHCARE, INC. | $7.7M | 0.2% | NEW | 56.5 |
| 121 |  $RRC | RANGE RESOURCES CORP | $7.6M | 0.2% | -50% | 79.4 |
| 122 |  $PENN | PENN Entertainment, Inc. | $7.5M | 0.2% | NEW | 41.2 |
| 123 |  $MOD | MODINE MANUFACTURING CO | $7.5M | 0.2% | -26% | 56.3 |
| 124 |  $H | Hyatt Hotels Corp | $7.4M | 0.2% | +114% | 47.9 |
| 125 |  $PL | Planet Labs PBC | $7.3M | 0.2% | -22% | 38.4 |
| 126 |  $ALSN | Allison Transmission Holdings Inc | $7.3M | 0.2% | +28% | 66.8 |
| 127 |  $PAY | Paymentus Holdings, Inc. | $7.2M | 0.2% | +10% | 69.6 |
| 128 |  $MUSA | Murphy USA Inc. | $7.2M | 0.2% | +23% | 52.7 |
| 129 |  $PLXS | PLEXUS CORP | $7.1M | 0.2% | -4% | 62.5 |
| 130 |  $TXRH | Texas Roadhouse, Inc. | $7.1M | 0.2% | -12% | 62.7 |
| 131 |  $HRI | HERC HOLDINGS INC | $7.0M | 0.2% | NEW | 65.3 |
| 132 |  $MSM | MSC INDUSTRIAL DIRECT CO INC | $6.9M | 0.2% | NEW | 50.2 |
| 133 |  $SF | STIFEL FINANCIAL CORP | $6.9M | 0.2% | -4% | 67 |
| 134 |  $CAVA | CAVA GROUP, INC. | $6.8M | 0.2% | NEW | 57.1 |
| 135 |  $DGX | QUEST DIAGNOSTICS INC | $6.7M | 0.2% | NEW | 69 |
| 136 |  $APG | APi Group Corp | $6.5M | 0.2% | -24% | 65.4 |
| 137 |  $LNG | Cheniere Energy, Inc. | $6.3M | 0.2% | +10% | 66.5 |
| 138 |  $RRX | REGAL REXNORD CORP | $6.3M | 0.2% | +36% | 52 |
| 139 |  $QXO | QXO, Inc. | $6.3M | 0.2% | -4% | 49 |
| 140 |  $PTGX | Protagonist Therapeutics, Inc | $6.2M | 0.2% | NEW | 59.4 |
| 141 |  $AAON | AAON, INC. | $6.2M | 0.2% | NEW | 56.4 |
| 142 |  $CTRI | Centuri Holdings, Inc. | $6.2M | 0.2% | NEW | 51.9 |
| 143 |  $JHX | James Hardie Industries plc | $6.1M | 0.2% | NEW | — |
| 144 |  $WH | WYNDHAM HOTELS & RESORTS, INC. | $6.1M | 0.2% | -4% | 51.3 |
| 145 |  $AEIS | ADVANCED ENERGY INDUSTRIES INC | $6.0M | 0.2% | -65% | 61.7 |
| 146 |  $KRYS | Krystal Biotech, Inc. | $6.0M | 0.2% | -49% | 79.2 |
| 147 |  $BBIO | BridgeBio Pharma, Inc. | $5.8M | 0.2% | -4% | 36.9 |
| 148 | — | ISHARES TR - RUS 1000 VAL ETF | $5.8M | 0.2% | +0% | — |
| 149 |  $TEX | TEREX CORP | $5.8M | 0.2% | +6% | 58.6 |
| 150 | — | ISHARES INC - MSCI AUST ETF | $5.8M | 0.2% | +5339% | — |
New Positions (58)
$SN SharkNinja, Inc.$19.4M$HXL HEXCEL CORP /DE/$10.6M$CROX Crocs, Inc.$10.4M$SXT SENSIENT TECHNOLOGIES CORP$10.2M$MXL MAXLINEAR, INC$10.2M$ULS UL Solutions Inc.$9.9M$CWST CASELLA WASTE SYSTEMS INC$9.7M$CDNL Cardinal Infrastructure Group Inc.$9.7M$RAL Ralliant Corp$9.5M$WSC WillScot Holdings Corp$9.4M$LTH Life Time Group Holdings, Inc.$9.4M$OPLN OPENLANE, Inc.$9.0M$WULF TERAWULF INC.$8.7M$INTC INTEL CORP$8.6M$RUSHA RUSH ENTERPRISES INC \TX\$8.3MExited Positions (41)
$ULTA Ulta Beauty, Inc.
$FIVE FIVE BELOW, INC
$TPC TUTOR PERINI CORP
$HAS HASBRO, INC.
$SPXC SPX Technologies, Inc.
$PAHC PHIBRO ANIMAL HEALTH CORP
$KTOS KRATOS DEFENSE & SECURITY SOLUTIONS, INC.
$ADSK Autodesk, Inc.
$IPGP IPG PHOTONICS CORP
$PATK PATRICK INDUSTRIES INC
$ATMU Atmus Filtration Technologies Inc.
$SSD Simpson Manufacturing Co., Inc.
$CHDN Churchill Downs Inc
$IDCC InterDigital, Inc.
$ONTO ONTO INNOVATION INC.Browse Top Institutional Investors
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