CASTLEARK MANAGEMENT LLC
Sector Allocation
- Technology43.4%$1.6B
- Other11.7%$433.6M
- Healthcare10.3%$381.3M
- Industrials9.7%$359.8M
- Consumer Discretionary8.8%$325.8M
- Financials7.8%$290.1M
- Energy5.3%$198.4M
- Materials1.5%$55.6M
- Consumer Staples0.7%$24.7M
- Utilities0.4%$14.9M
AUM History
13fpro.ai/research/fund/castleark-management-llc-1106832
Conviction and streaks
Concentrating · top 10 = 33.9%From the fund's last 12 quarters of 13F filings: positions held longest at size, and names it added to or trimmed several quarters running.
Largest positions — Q2 2026
NVDA
$260.0MGOOGL
$181.2MAAPL
$136.6MLRCX
$123.0MMSFT
$109.2MLLY
$105.2MAVGO
$92.1M- SPDR$90.0M
V
$81.0MANET
$80.4M- ISHARES$75.8M
- VANGUARD$69.6M
AMD
$69.0MGILD
$66.6MAMZN
$63.9MGEV
$54.2MMETA
$52.8MADI
$48.0MMA
$47.0MMS
$43.6M
Top 20 stock positions. Options are left out: 13F reports them at the underlying's value.
13fpro.ai/research/fund/castleark-management-llc-1106832
CASTLEARK MANAGEMENT LLC 13F holdings — Q2 2026
$3.7B portfolio (+22.7% QoQ) · 309 holdings · Q2 2026 13F · top 10 are 34% of the stock portfolio
$260.0M
7.0% of stocks
+3%This quarter-4.1%Since filed10+ qtrsHeld$181.2M
4.9% of stocks
+21%This quarter-8.5%Since filed10+ qtrsHeld$136.6M
3.7% of stocks
+35%This quarter+12.4%Since filed10+ qtrsHeld$123.0M
3.3% of stocks
-16%This quarter-28.5%Since filed10+ qtrsHeld$109.2M
2.9% of stocks
+11%This quarter+7.5%Since filed10+ qtrsHeld$105.2M
2.8% of stocks
+19%This quarter+8.4%Since filed10+ qtrsHeld$92.1M
2.5% of stocks
+20%This quarter-16.2%Since filed4 qtrsHeld- 8
SPDR SERIES TRUST - ST INTER BD ETF
$90.0M
2.4% of stocks
No changeThis quarter—Since filed—HeldAIQuality—Est. buy— $81.0M
2.2% of stocks
+54%This quarter+11.0%Since filed10+ qtrsHeld$80.4M
2.2% of stocks
+10%This quarter-10.8%Since filed7 qtrsHeldAIQualityAI quality score is Pro: unlock with a free trialEst. buyEstimated buy price is Pro: unlock with a free trialAdded 3 qtrs in a row
All holdings — CASTLEARK MANAGEMENT LLC (Q2 2026)
309 disclosed positions from the Form 13F-HR on SEC EDGAR, with quarter-over-quarter share changes. Largest by value first; the ten above are not repeated.
| # | Company | Held | Source | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 11 | — | ISHARES TR - US TREAS BD ETFetf/fund | — | $75.8M | 2.0% | 3.33M | — | — | — | 13F |
| 12 | — | VANGUARD SCOTTSDALE FDS - MTG-BKD SECS ETFetf/fund | — | $69.6M | 1.9% | 1.49M | — | — | — | 13F |
| 13 | ADVANCED MICRO DEVICES INC | Technology | $69.0M | 1.9% | 119K | +34% | 3 qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 14 | GILEAD SCIENCES, INC. | Healthcare | $66.6M | 1.8% | 528K | +54% | 10+ qtrsAdded 4 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 15 | AMAZON COM INC | Consumer Discretionary | $63.9M | 1.7% | 268K | +9% | 10+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 16 | GE Vernova Inc. | Industrials | $54.2M | 1.5% | 46K | +11% | 5 qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 17 | Meta Platforms, Inc. | Technology | $52.8M | 1.4% | 94K | -24% | 10+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 18 | ANALOG DEVICES INC | Technology | $48.0M | 1.3% | 121K | +55% | 4 qtrsAdded 4 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 19 | Mastercard Inc | Financials | $47.0M | 1.3% | 91K | -0.6% | 10+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 20 | MORGAN STANLEY | Financials | $43.6M | 1.2% | 209K | +781% | 8 qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 21 | Snowflake Inc. | Technology | $42.5M | 1.1% | 167K | +23% | 5 qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 22 | Vertiv Holdings Co | Technology | $41.5M | 1.1% | 124K | +10% | 4 qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 23 | TAPESTRY, INC. | Consumer Discretionary | $38.9M | 1.1% | 266K | +30% | 3 qtrsAdded 3 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 24 | — | SPDR SERIES TRUST - ST SHO TREAS ETFetf/fund | — | $38.7M | 1.0% | 1.33M | — | — | — | 13F |
| 25 | — | VANGUARD SCOTTSDALE FDS - LG-TERM COR BDetf/fund | — | $33.7M | 0.9% | 448K | — | — | — | 13F |
| 26 | $NOW | ServiceNow, Inc. | Technology | $31.9M | 0.9% | 322K | +6% | |||
| 27 | — | ISHARES TR - 10-20 YR TRS ETF | — | $25.9M | 0.7% | 258K | — | |||
| 28 | $BKNG | Booking Holdings Inc. | Consumer Discretionary | $24.4M | 0.7% | 137K | +2694% | |||
| 29 | $MCO | MOODYS CORP /DE/ | Financials | $24.2M | 0.7% | 53K | +216% | |||
| 30 | $TSLA | Tesla, Inc. | Consumer Discretionary | $20.2M | 0.6% | 48K | +23% | |||
| 31 | $CAT | CATERPILLAR INC | Industrials | $20.2M | 0.5% | 19K | +36% | |||
| 32 | $GE | GENERAL ELECTRIC CO | Industrials | $19.7M | 0.5% | 53K | +72% | |||
| 33 | $TSM | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD | Technology | $19.7M | 0.5% | 41K | — | |||
| 34 | $LGND | LIGAND PHARMACEUTICALS INC | Healthcare | $19.6M | 0.5% | 62K | +27% | |||
| 35 | $SN | SharkNinja, Inc. | Technology | $19.4M | 0.5% | 127K | New | |||
| 36 | — | ISHARES TR - MBS ETF | — | $19.3M | 0.5% | 204K | — | |||
| 37 | $TWLO | TWILIO INC | Technology | $19.1M | 0.5% | 92K | +245% | |||
| 38 | $BKR | Baker Hughes Co | Energy | $18.3M | 0.5% | 330K | -15% | |||
| 39 | $GTX | Garrett Motion Inc. | Industrials | $17.0M | 0.5% | 469K | -4% | |||
| 40 | $JPM | JPMORGAN CHASE & CO | Financials | $16.5M | 0.5% | 51K | — | |||
| 41 | $ASND | Ascendis Pharma A/S | Healthcare | $16.5M | 0.4% | 62K | -9% | |||
| 42 | $JBHT | HUNT J B TRANSPORT SERVICES INC | Industrials | $16.4M | 0.4% | 57K | +150% | |||
| 43 | $FANG | Diamondback Energy, Inc. | Energy | $15.9M | 0.4% | 91K | -37% | |||
| 44 | $GM | General Motors Co | Consumer Discretionary | $15.4M | 0.4% | 199K | +101% | |||
| 45 | $BTSG | BrightSpring Health Services, Inc. | Healthcare | $14.8M | 0.4% | 212K | -14% | |||
| 46 | $SMTC | SEMTECH CORP | Technology | $14.8M | 0.4% | 91K | -15% | |||
| 47 | $FCFS | FirstCash Holdings, Inc. | Consumer Discretionary | $14.8M | 0.4% | 68K | -4% | |||
| 48 | $MAR | MARRIOTT INTERNATIONAL INC /MD/ | Consumer Discretionary | $14.0M | 0.4% | 38K | +353% | |||
| 49 | — | ISHARES TR - ISHS 5-10YR INVT | — | $13.8M | 0.4% | 260K | — | |||
| 50 | $TJX | TJX COMPANIES INC /DE/ | Consumer Discretionary | $13.7M | 0.4% | 91K | — | |||
| 51 | $UBER | Uber Technologies, Inc | Technology | $13.7M | 0.4% | 189K | +12% | |||
| 52 | $UCTT | Ultra Clean Holdings, Inc. | Technology | $13.7M | 0.4% | 96K | -4% | |||
| 53 | $NOVT | NOVANTA INC | Technology | $13.5M | 0.4% | 83K | +138% | |||
| 54 | $AXON | AXON ENTERPRISE, INC. | Industrials | $13.1M | 0.3% | 23K | +164% | |||
| 55 | $BA | BOEING CO | Industrials | $12.9M | 0.3% | 60K | +128% | |||
| 56 | — | SPDR SERIES TRUST - ST STR SP BIOT | — | $12.8M | 0.3% | 81K | — | |||
| 57 | $ESI | Element Solutions Inc | Materials | $12.6M | 0.3% | 264K | -4% | |||
| 58 | $MYRG | MYR GROUP INC. | Energy | $12.5M | 0.3% | 25K | +42% | |||
| 59 | $GH | Guardant Health, Inc. | Healthcare | $12.0M | 0.3% | 80K | -50% | |||
| 60 | — | ISHARES TR - 20 YR TR BD ETF | — | $11.9M | 0.3% | 137K | — | |||
| 61 | $FROG | JFrog Ltd | Technology | $11.8M | 0.3% | 129K | +39% | |||
| 62 | $C | CITIGROUP INC | Financials | $11.7M | 0.3% | 84K | +76% | |||
| 63 | $XPO | XPO, Inc. | Industrials | $11.7M | 0.3% | 57K | +121% | |||
| 64 | $KLIC | KULICKE & SOFFA INDUSTRIES INC | Technology | $11.6M | 0.3% | 87K | -18% | |||
| 65 | $HQY | HEALTHEQUITY, INC. | Industrials | $11.5M | 0.3% | 128K | +163% | |||
| 66 | $XMTR | Xometry, Inc. | Industrials | $11.3M | 0.3% | 118K | +115% | |||
| 67 | $LSCC | LATTICE SEMICONDUCTOR CORP | Technology | $11.3M | 0.3% | 74K | -19% | |||
| 68 | $JAZZ | Jazz Pharmaceuticals plc | Healthcare | $11.3M | 0.3% | 47K | -4% | |||
| 69 | $HLIO | HELIOS TECHNOLOGIES, INC. | Industrials | $11.2M | 0.3% | 125K | -22% | |||
| 70 | $KNSA | Kiniksa Pharmaceuticals International, plc | Healthcare | $11.1M | 0.3% | 174K | -4% | |||
| 71 | $ESE | ESCO TECHNOLOGIES INC | Technology | $11.1M | 0.3% | 32K | +77% | |||
| 72 | $VSEC | VSE CORP | Technology | $11.0M | 0.3% | 48K | -4% | |||
| 73 | $TKR | TIMKEN CO | Industrials | $11.0M | 0.3% | 75K | +87% | |||
| 74 | $HXL | HEXCEL CORP /DE/ | Materials | $10.6M | 0.3% | 106K | New | |||
| 75 | $BWA | BORGWARNER INC | Industrials | $10.5M | 0.3% | 159K | +7% | |||
| 76 | $AIR | AAR CORP | Industrials | $10.5M | 0.3% | 74K | +22% | |||
| 77 | $WMT | Walmart Inc. | Consumer Staples | $10.4M | 0.3% | 92K | -19% | |||
| 78 | $CROX | Crocs, Inc. | Consumer Discretionary | $10.4M | 0.3% | 86K | New | |||
| 79 | $EQT | EQT Corp | Energy | $10.3M | 0.3% | 194K | — | |||
| 80 | $SXT | SENSIENT TECHNOLOGIES CORP | Materials | $10.2M | 0.3% | 83K | New | |||
| 81 | $MXL | MAXLINEAR, INC | Technology | $10.2M | 0.3% | 80K | New | |||
| 82 | $SEI | Solaris Energy Infrastructure, Inc. | Energy | $10.1M | 0.3% | 126K | +33% | |||
| 83 | $EVR | Evercore Inc. | Financials | $10.0M | 0.3% | 29K | -4% | |||
| 84 | $SHOP | SHOPIFY INC. | Technology | $10.0M | 0.3% | 87K | -72% | |||
| 85 | $ALGM | ALLEGRO MICROSYSTEMS, INC. | Technology | $9.9M | 0.3% | 142K | -4% | |||
| 86 | $ULS | UL Solutions Inc. | Technology | $9.9M | 0.3% | 97K | New | |||
| 87 | $WMB | WILLIAMS COMPANIES, INC. | Energy | $9.8M | 0.3% | 132K | — | |||
| 88 | $CWST | CASELLA WASTE SYSTEMS INC | Utilities | $9.7M | 0.3% | 100K | New | |||
| 89 | $CDNL | Cardinal Infrastructure Group Inc. | Industrials | $9.7M | 0.3% | 103K | New | |||
| 90 | $SOLS | Solstice Advanced Materials Inc. | Healthcare | $9.7M | 0.3% | 109K | -4% | |||
| 91 | $DY | DYCOM INDUSTRIES INC | Energy | $9.5M | 0.3% | 19K | -42% | |||
| 92 | $RAL | Ralliant Corp | Technology | $9.5M | 0.3% | 129K | New | |||
| 93 | $WCC | WESCO INTERNATIONAL INC | Consumer Discretionary | $9.4M | 0.3% | 27K | -4% | |||
| 94 | $WSC | WillScot Holdings Corp | Industrials | $9.4M | 0.3% | 326K | New | |||
| 95 | $KNX | Knight-Swift Transportation Holdings Inc. | Industrials | $9.4M | 0.3% | 121K | -4% | |||
| 96 | $LTH | Life Time Group Holdings, Inc. | Communication Services | $9.4M | 0.3% | 229K | New | |||
| 97 | $CGNX | COGNEX CORP | Technology | $9.3M | 0.3% | 129K | +17% | |||
| 98 | $AXP | AMERICAN EXPRESS CO | Financials | $9.2M | 0.3% | 27K | +920% | |||
| 99 | $ASB | ASSOCIATED BANC-CORP | Financials | $9.2M | 0.3% | 299K | -4% | |||
| 100 | $BKD | Brookdale Senior Living Inc. | Healthcare | $9.2M | 0.3% | 570K | -5% | |||
| 101 | $MU | MICRON TECHNOLOGY INC | Technology | $9.1M | 0.3% | 7,890 | -28% | |||
| 102 | $GWW | W.W. GRAINGER, INC. | Consumer Discretionary | $9.0M | 0.2% | 6,610 | +18% | |||
| 103 | $OPLN | OPENLANE, Inc. | Consumer Discretionary | $9.0M | 0.2% | 217K | New | |||
| 104 | — | SELECT SECTOR SPDR TR - ST STR CARE ETF | — | $8.9M | 0.2% | 56K | — | |||
| 105 | $RIG | Transocean Ltd. | Energy | $8.9M | 0.2% | 1.81M | +117% | |||
| 106 | $ELAN | Elanco Animal Health Inc | Healthcare | $8.8M | 0.2% | 359K | +0.8% | |||
| 107 | $WULF | TERAWULF INC. | Financials | $8.7M | 0.2% | 353K | New | |||
| 108 | $ENVA | Enova International, Inc. | Financials | $8.7M | 0.2% | 36K | -4% | |||
| 109 | $INTC | INTEL CORP | Technology | $8.6M | 0.2% | 62K | New | |||
| 110 | $RUSHA | RUSH ENTERPRISES INC \TX\ | Consumer Discretionary | $8.3M | 0.2% | 114K | New | |||
| 111 | $TGTX | TG THERAPEUTICS, INC. | Healthcare | $8.3M | 0.2% | 151K | New | |||
| 112 | $FAST | FASTENAL CO | Industrials | $8.2M | 0.2% | 171K | +15% | |||
| 113 | $CRL | CHARLES RIVER LABORATORIES INTERNATIONAL, INC. | Healthcare | $8.2M | 0.2% | 36K | -9% | |||
| 114 | $PRAX | Praxis Precision Medicines, Inc. | Healthcare | $8.2M | 0.2% | 24K | New | |||
| 115 | $FFIV | F5, INC. | Technology | $8.1M | 0.2% | 20K | New | |||
| 116 | $LINC | LINCOLN EDUCATIONAL SERVICES CORP | Consumer Discretionary | $8.1M | 0.2% | 163K | +8% | |||
| 117 | $BRKR | BRUKER CORP | Healthcare | $8.1M | 0.2% | 134K | New | |||
| 118 | $CF | CF Industries Holdings, Inc. | Materials | $8.0M | 0.2% | 74K | -43% | |||
| 119 | $LBRT | Liberty Energy Inc. | Energy | $7.8M | 0.2% | 297K | +12% | |||
| 120 | $MOH | MOLINA HEALTHCARE, INC. | Healthcare | $7.7M | 0.2% | 34K | New | |||
| 121 | $RRC | RANGE RESOURCES CORP | Energy | $7.6M | 0.2% | 205K | -50% | |||
| 122 | $PENN | PENN Entertainment, Inc. | Consumer Discretionary | $7.5M | 0.2% | 352K | New | |||
| 123 | $MOD | MODINE MANUFACTURING CO | Industrials | $7.5M | 0.2% | 28K | -26% | |||
| 124 | $H | Hyatt Hotels Corp | Consumer Discretionary | $7.4M | 0.2% | 38K | +114% | |||
| 125 | $PL | Planet Labs PBC | Technology | $7.3M | 0.2% | 221K | -22% | |||
| 126 | $ALSN | Allison Transmission Holdings Inc | Industrials | $7.3M | 0.2% | 65K | +28% | |||
| 127 | $PAY | Paymentus Holdings, Inc. | Industrials | $7.2M | 0.2% | 299K | +10% | |||
| 128 | $MUSA | Murphy USA Inc. | Consumer Discretionary | $7.2M | 0.2% | 13K | +23% | |||
| 129 | $PLXS | PLEXUS CORP | Technology | $7.1M | 0.2% | 24K | -4% | |||
| 130 | $TXRH | Texas Roadhouse, Inc. | Consumer Discretionary | $7.1M | 0.2% | 36K | -12% | |||
| 131 | $HRI | HERC HOLDINGS INC | Industrials | $7.0M | 0.2% | 48K | New | |||
| 132 | $MSM | MSC INDUSTRIAL DIRECT CO INC | Consumer Discretionary | $6.9M | 0.2% | 58K | New | |||
| 133 | $SF | STIFEL FINANCIAL CORP | Financials | $6.9M | 0.2% | 98K | -4% | |||
| 134 | $CAVA | CAVA GROUP, INC. | Consumer Discretionary | $6.8M | 0.2% | 86K | New | |||
| 135 | $DGX | QUEST DIAGNOSTICS INC | Healthcare | $6.7M | 0.2% | 31K | New | |||
| 136 | $APG | APi Group Corp | Industrials | $6.5M | 0.2% | 153K | -24% | |||
| 137 | $LNG | Cheniere Energy, Inc. | Energy | $6.3M | 0.2% | 27K | +10% | |||
| 138 | $RRX | REGAL REXNORD CORP | Industrials | $6.3M | 0.2% | 26K | +36% | |||
| 139 | $QXO | QXO, Inc. | Consumer Discretionary | $6.3M | 0.2% | 362K | -4% | |||
| 140 | $PTGX | Protagonist Therapeutics, Inc | Healthcare | $6.2M | 0.2% | 51K | New | |||
| 141 | $AAON | AAON, INC. | Industrials | $6.2M | 0.2% | 49K | New | |||
| 142 | $CTRI | Centuri Holdings, Inc. | Energy | $6.2M | 0.2% | 204K | New | |||
| 143 | $JHX | James Hardie Industries plc | Materials | $6.1M | 0.2% | 234K | New | |||
| 144 | $WH | WYNDHAM HOTELS & RESORTS, INC. | Consumer Discretionary | $6.1M | 0.2% | 72K | -4% | |||
| 145 | $AEIS | ADVANCED ENERGY INDUSTRIES INC | Technology | $6.0M | 0.2% | 16K | -65% | |||
| 146 | $KRYS | Krystal Biotech, Inc. | Healthcare | $6.0M | 0.2% | 16K | -49% | |||
| 147 | $BBIO | BridgeBio Pharma, Inc. | Healthcare | $5.8M | 0.2% | 78K | -4% | |||
| 148 | — | ISHARES TR - RUS 1000 VAL ETF | — | $5.8M | 0.2% | 24K | — | |||
| 149 | $TEX | TEREX CORP | Industrials | $5.8M | 0.2% | 80K | +6% | |||
| 150 | — | ISHARES INC - MSCI AUST ETF | — | $5.8M | 0.2% | 205K | +5339% |
What changed in Q2 2026
Against the previous quarter's 13F: 58 new, 71 added to, 89 trimmed, 41 sold out. Share-count changes; largest moves by dollar size first.
New positions (58)
$SNSharkNinja, Inc.$19.4M
first bought this quarter
$HXLHEXCEL CORP /DE/$10.6M
first bought this quarter
$CROXCrocs, Inc.$10.4M
first bought this quarter
$SXTSENSIENT TECHNOLOGIES CORP$10.2M
first bought this quarter
$MXLMAXLINEAR, INC$10.2M
first bought this quarter
$ULSUL Solutions Inc.$9.9M
first bought this quarter
+52 more in the Excel export
Added to (71)
now $43.6M · held 8 qtrs
now $136.6M · held 10+ qtrs
now $181.2M · held 10+ qtrs, 3 adds in a row
now $81.0M · held 10+ qtrs
$BKNGBooking Holdings Inc.+2694%
now $24.4M · held 5 qtrs
now $66.6M · held 10+ qtrs, 4 adds in a row
+65 more in the Excel export
Trimmed (89)
$SCHWSCHWAB CHARLES CORP-98%
now $864K
$SHOPSHOPIFY INC.-72%
now $10.0M · held 7 qtrs, 2 trims in a row
$DOCNDigitalOcean Holdings, Inc.-81%
now $5.6M · held 3 qtrs, 2 trims in a row
now $123.0M · held 10+ qtrs, 4 trims in a row
$CVXCHEVRON CORP-91%
now $2.0M
$VIAVVIAVI SOLUTIONS INC.-95%
now $957K
+83 more in the Excel export
Holdings by quarter
Every 13F CASTLEARK MANAGEMENT LLC has filed, 41 earlier quarters. Pick one to see what it held then.
Is it too late to follow CASTLEARK MANAGEMENT?
Q2 2026 13F filed with the SEC on Aug 14, 2026. Prices are closing prices as of Oct 26, 2026.
Average quality of CASTLEARK MANAGEMENT's top 20 holdings: 79/100 (our AI quality score, weighted by position size; 20 of the 20 are scored)
Top 10 since filing
-3.2%
Value-weighted move of the 10 largest stock positions
Turnover
19%
Last quarter; 73% over the last 4
Top 10 weight
34%
Share of the stock portfolio in its 10 largest positions
Held 4+ quarters
72%
Share of portfolio value in positions held a year or more
Highest-quality names it owns(among its 100 largest positions)
The 8 highest-scoring companies in this portfolio are a Pro feature.
How these are measured
- Moves since the quarter-end and since the filing date use our own daily closing prices, from the close on (or just before) each date to the latest close.
- Turnover is the lesser of shares bought or sold in a quarter, valued at the quarter-end prices in the 13F, divided by the average of the two quarters' stock portfolio values.
- Quarters held and add/trim streaks count back only through quarters whose filed holdings add up to the filing's own cover-page total (back to Q1 2024 for this fund). A change counts as an add or a trim when the split-adjusted share count moves by more than 1%.
- Estimate, not the fund's reported cost. For each quarter in the current holding period in which the fund's share count rose (split-adjusted), we take that quarter's average daily close and weight it by the shares added; sales do not change an average cost. Quarters where the stock's price history and the 13F's own implied price disagree by more than 2x are left out.
- Put and call option rows report the value of the underlying shares, not a position the fund paid for, so they are left out of all of the above.
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 $GOOGL 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 (43.4% of disclosed assets). All figures are sourced directly from CASTLEARK MANAGEMENT LLC’s Form 13F-HR filing with the SEC under CIK 1106832.
Funds like this
managers whose biggest positions overlap CASTLEARK MANAGEMENT'sBrowse Top Institutional Investors
13F Pro tracks 8,700+ institutional investors filing 13F reports with the SEC.
to search all 8,700+ institutional filers.
AI-Powered Hedge Fund Analysis: CASTLEARK MANAGEMENT LLC
13F Pro is an AI hedge fund tracker and stock research platform. For CASTLEARK MANAGEMENT LLC (SEC CIK: 1106832), the platform ingests every quarterly Form 13F filing and applies AI-powered analysis on top — 10 specialized AI analysts (value, growth, momentum, macro, activist, and more) debate the fund's top positions and publish AI-generated analysis with cited SEC sources.
Every holding in CASTLEARK MANAGEMENT LLC's portfolio is scored on an AI quality ranking built from its SEC filings (ROIC, FCF margin, revenue growth, institutional flow, earnings quality, shareholder dilution, and more). Track accumulation and distribution quarter over quarter, identify conviction positions, and see AI stock analysis for each position — alongside 8,700+ other institutional filers and 2,800+ AI-ranked companies.