Castleark Management LLC
In its 13F for Q1 2024 (holdings as of March 31, 2024, filed May 16, 2024), Castleark Management LLC reported 278 stock positions worth $2.4 billion. Its top holding was Microsoft (MSFT) at 6.7% of the portfolio, followed by Nvidia (NVDA, 6.7%) and Apple (AAPL, 4.1%). Compared with Q4 2023, it opened 38 new positions, sold out of 41, added to 47 and reduced 99. The biggest buy was Valero Energy (VLO, shares +1936%) and the biggest sale Lululemon Athletica (LULU, shares −65%).
- Most Recent 13F
- Q2 2026
- Location
- CHICAGO, IL
- CIK
- 0001106832
- Portfolio Value
- $2.4B (Q1 2024)
- SEC Filing
- 0001106832-24-000005 ↗ filed May 16, 2024
Holdings Value
Holdings 278 stocks · $2.4B
| MSFT Microsoft Corp. | 6.71% | 383,595 | $161.4M | Reduce -6.8% |
| NVDA Nvidia Corp. | 6.65% | 176,968 | $159.9M | Reduce -8.0% |
| AAPL Apple Inc. | 4.06% | 568,691 | $97.5M | Reduce -1.7% |
| AMZN Amazon.com Inc. | 3.79% | 505,673 | $91.2M | Reduce -5.1% |
| META Meta Platforms Inc. Class A | 3.42% | 169,534 | $82.3M | Reduce -8.3% |
| GOOGL Alphabet Inc. Class A | 3.16% | 503,852 | $76.0M | Reduce -1.0% |
| NOW ServiceNow Inc. | 2.66% | 83,965 | $64.0M | Reduce -2.5% |
| MA Mastercard Inc. Class A | 2.63% | 131,307 | $63.2M | Reduce -1.3% |
| LLY Eli Lilly & Co. | 2.52% | 77,712 | $60.5M | Reduce -1.3% |
| DXCM Dexcom Inc. | 2.49% | 432,398 | $60.0M | Reduce -1.3% |
| LRCX Lam Research Corp. | 2.19% | 54,202 | $52.7M | Add +2.7% |
| V Visa Inc. Class A | 2.05% | 176,589 | $49.3M | Reduce -1.2% |
| ISRG Intuitive Surgical Inc. | 1.86% | 111,766 | $44.6M | Add +12.7% |
| SYK Stryker Corp. | 1.79% | 120,392 | $43.1M | Reduce -1.3% |
| AMAT Applied Materials Inc. | 1.30% | 151,042 | $31.1M | Add +21.9% |
| EFA iShares MSCI Eafe ETF | 1.21% | 364,410 | $29.1M | No change |
| XLI SS Industrial Select Sector | 1.17% | 223,500 | $28.2M | No change |
| XHB SS SPDR S&P Homebldrs ETF | 1.13% | 243,180 | $27.1M | No change |
| IWN iShares Russell 2000 Value E | 1.08% | 163,710 | $26.0M | No change |
| UNP Union Pacific Corp. | 1.01% | 98,769 | $24.3M | Add +33.4% |
| ASML ASML Holding NV-NY Reg SHS | 1.00% | 24,674 | $23.9M | Reduce -1.3% |
| VLO Valero Energy Corp. | 0.92% | 129,700 | $22.1M | Add +1936.1% |
| LVS Las Vegas Sands Corp. | 0.91% | 422,355 | $21.8M | Reduce -1.3% |
| XOM Exxon Mobil Corp. | 0.86% | 178,300 | $20.7M | Add +41.3% |
| ADBE Adobe Inc. | 0.85% | 40,594 | $20.5M | Reduce -44.6% |
| SNPS Synopsys Inc. | 0.75% | 31,522 | $18.0M | Reduce -1.3% |
| MSCI MSCI Inc. | 0.68% | 29,169 | $16.3M | Reduce -1.3% |
| EWJ iShares MSCI Japan ETF | 0.66% | 222,650 | $15.9M | No change |
| AXP American Express Co. | 0.64% | 67,975 | $15.5M | Add +2441.1% |
| DE Deere & Co. | 0.63% | 36,780 | $15.1M | Add +2.9% |
| JPM JPMorgan Chase & Co. | 0.60% | 72,365 | $14.5M | No change |
| LULU Lululemon Athletica Inc. | 0.56% | 34,650 | $13.5M | Reduce -64.7% |
| SMCI Super Micro Computer Inc. | 0.54% | 12,830 | $13.0M | Reduce -54.1% |
| FTI Technipfmc PLC | 0.51% | 486,430 | $12.2M | Reduce -9.8% |
| ETN Eaton Corp. PLC | 0.50% | 38,245 | $12.0M | Add +181.7% |
| APG Api Group Corp. | 0.49% | 302,403 | $11.9M | Reduce -11.8% |
| HD Home Depot Inc. | 0.49% | 30,650 | $11.8M | No change |
| LEN Lennar Corp. Class A | 0.46% | 64,870 | $11.2M | No change |
| XLV SS Health Care Select Sector | 0.44% | 71,120 | $10.5M | New |
| SAIA Saia Inc. | 0.43% | 17,610 | $10.3M | Reduce -11.8% |
| MEDP Medpace Holdings Inc. | 0.42% | 24,780 | $10.0M | Reduce -11.8% |
| C Citigroup Inc. | 0.41% | 154,414 | $9.8M | No change |
| PNR Pentair PLC | 0.41% | 114,040 | $9.7M | Reduce -11.9% |
| UNH Unitedhealth Group Inc. | 0.40% | 19,634 | $9.7M | Add +11.7% |
| XPO Xpo Inc. | 0.40% | 79,004 | $9.6M | Reduce -11.8% |
| XBI SS SPDR S&P Biotech ETF | 0.40% | 100,180 | $9.5M | New |
| FCFS Firstcash Holdings Inc. | 0.39% | 73,230 | $9.3M | Add +1.5% |
| SLB SLB Ltd. filed as SCHLUMBERGER LTD | 0.39% | 169,010 | $9.3M | Reduce -56.4% |
| GLD SPDR Gold Shares | 0.39% | 44,995 | $9.3M | No change |
| UBER Uber Technologies Inc. | 0.38% | 117,490 | $9.0M | New |
| EVR Evercore Inc. Class A | 0.38% | 46,930 | $9.0M | Reduce -11.8% |
| JBHT Hunt (jb) Transprt SVCS Inc. | 0.37% | 44,890 | $8.9M | No change |
| TJX TJX Companies Inc. filed as TJX COS INC NEW | 0.37% | 87,660 | $8.9M | No change |
| VRNS Varonis Systems Inc. | 0.37% | 187,820 | $8.9M | Reduce -11.8% |
| CLS Celestica Inc. | 0.37% | 195,350 | $8.8M | Reduce -33.2% |
| CYBR Cyberark Software Ltd./Israel | 0.35% | 31,560 | $8.4M | Add +2.0% |
| FTAI Ftai Aviation Ltd. | 0.34% | 120,220 | $8.1M | Add +37.2% |
| RACE Ferrari NV | 0.33% | 18,104 | $7.9M | Add +495.5% |
| KNF Knife River Corp. | 0.33% | 97,250 | $7.9M | Reduce -11.8% |
| APPF Appfolio Inc. Class A | 0.33% | 31,870 | $7.9M | Reduce -10.6% |
| LNWO Light & Wonder Inc. | 0.32% | 76,030 | $7.8M | Reduce -13.4% |
| IBP Installed Building Products | 0.32% | 29,730 | $7.7M | Reduce -20.6% |
| BCO The Brink's Co. | 0.31% | 81,470 | $7.5M | Reduce -23.4% |
| ACWX iShares MSCI Acwi Ex US ETF | 0.31% | 139,850 | $7.5M | No change |
| HQY Healthequity Inc. | 0.31% | 90,580 | $7.4M | Reduce -11.9% |
| ONTO Onto Innovation Inc. | 0.31% | 40,740 | $7.4M | Reduce -19.8% |
| RDNT Radnet Inc. | 0.30% | 149,723 | $7.3M | New |
| TREX Trex Company Inc. | 0.30% | 72,820 | $7.3M | Reduce -11.8% |
| FCX Freeport-McMoran Inc. | 0.30% | 152,830 | $7.2M | Add +1577.6% |
| ESI Element Solutions Inc. | 0.30% | 286,050 | $7.1M | Add +13.3% |
| HEES H&E Equipment Services Inc. | 0.29% | 109,780 | $7.0M | New |
| KTB Kontoor Brands Inc. | 0.29% | 116,340 | $7.0M | Reduce -2.0% |
| ASH Ashland Inc. | 0.29% | 71,540 | $7.0M | New |
| FIX Comfort Systems USA Inc. | 0.29% | 21,710 | $6.9M | Reduce -11.8% |
| GAP The Gap Inc. | 0.29% | 249,996 | $6.9M | Add +10.1% |
| NTNX Nutanix Inc. Class A | 0.29% | 111,310 | $6.9M | Reduce -27.5% |
| XLF SS Financial Select Sector | 0.28% | 162,290 | $6.8M | No change |
| NTRA Natera Inc. | 0.28% | 74,630 | $6.8M | New |
| KD Kyndryl Holdings Inc. | 0.28% | 312,130 | $6.8M | Add +21.8% |
| VCEL Vericel Corp. | 0.28% | 130,250 | $6.8M | Reduce -12.0% |
| TTEK Tetra Tech Inc. | 0.28% | 36,270 | $6.7M | Reduce -21.1% |
| MOD Modine Manufacturing Co. | 0.28% | 69,580 | $6.6M | Add +4.8% |
| CRM Salesforce Inc. | 0.27% | 21,929 | $6.6M | New |
| JLL Jones Lang Lasalle Inc. | 0.27% | 33,430 | $6.5M | Reduce -1.3% |
| WIX Wix.com Ltd. | 0.27% | 47,360 | $6.5M | Reduce -11.9% |
| MTSI Macom Technology Solutions H | 0.27% | 67,310 | $6.4M | Reduce -11.8% |
| FLR Fluor Corp. | 0.27% | 151,060 | $6.4M | Add +6.5% |
| SKY Champion Homes Inc. filed as SKYLINE CHAMPION CORPORATION | 0.26% | 74,880 | $6.4M | New |
| GWRE Guidewire Software Inc. | 0.26% | 52,700 | $6.2M | Reduce -11.8% |
| EFOR Everforth Inc. filed as ASGN INC | 0.26% | 58,590 | $6.1M | Add +56.3% |
| CASY Casey's General Stores Inc. | 0.25% | 19,240 | $6.1M | Reduce -11.6% |
| GKOS Glaukos Corp. | 0.25% | 64,910 | $6.1M | Reduce -3.9% |
| ET Energy Transfer LP | 0.25% | 378,840 | $6.0M | No change |
| EXP Eagle Materials Inc. | 0.25% | 21,860 | $5.9M | Add +10.5% |
| CMPR Cimpress PLC | 0.25% | 66,790 | $5.9M | Reduce -12.7% |
| WEX Wex Inc. | 0.24% | 24,730 | $5.9M | Add +36.2% |
| CSX CSX Corp. | 0.24% | 155,610 | $5.8M | No change |
| NXT Nextpower Inc. filed as NEXTRACKER INC | 0.24% | 102,405 | $5.8M | New |
| MAS Masco Corp. | 0.24% | 71,800 | $5.7M | No change |
| PSN Parsons Corp. | 0.24% | 68,160 | $5.7M | Reduce -56.7% |
Portfolio Sells Q4 2023 → Q1 2024
| LULU Lululemon Athletica Inc. | Reduce -64.7% | 0.56% | −1.66 |
| ADBE Adobe Inc. | Reduce -44.6% | 0.85% | −1.09 |
| AAPL Apple Inc. | Reduce -1.7% | 4.06% | −0.88 |
| KRE SS SPDR S&P Regional Bank | Reduce -77.5% | 0.22% | −0.85 |
| SMH Vaneck Semiconductor ETF | Sold out | 0.00% | −0.70 |
| AMD Advanced Micro Devices | Sold out | 0.00% | −0.69 |
| XRT SS SPDR S&P Retail ETF | Reduce -78.5% | 0.16% | −0.55 |
| SLB SLB Ltd. | Reduce -56.4% | 0.39% | −0.51 |
| RIO Rio Tinto PLC-Spon ADR | Reduce -97.9% | 0.01% | −0.42 |
| ATI Ati Inc. | Sold out | 0.00% | −0.35 |
| BA The Boeing Co. | Reduce -46.4% | 0.20% | −0.34 |
| AXONICS INC | Sold out | 0.00% | −0.31 |
| YELP Yelp Inc. | Sold out | 0.00% | −0.28 |
| FRSH Freshworks Inc. Class A | Sold out | 0.00% | −0.28 |
| QQQ Invesco QQQ Trust Series 1 | Sold out | 0.00% | −0.28 |
| CWAN Clearwater Analytics HDS-A | Sold out | 0.00% | −0.27 |
| OPCH Option Care Health Inc. | Sold out | 0.00% | −0.27 |
| BRBR Bellring Brands Inc. | Sold out | 0.00% | −0.25 |
| ACVA Acv Auctions Inc. Class A | Sold out | 0.00% | −0.25 |
| MANH Manhattan Associates Inc. | Reduce -86.2% | 0.04% | −0.24 |
| BLKB Blackbaud Inc. | Sold out | 0.00% | −0.24 |
| FN Fabrinet | Reduce -72.8% | 0.08% | −0.23 |
| ROK Rockwell Automation Inc. | Sold out | 0.00% | −0.23 |
| HURN Huron Consulting Group Inc. | Sold out | 0.00% | −0.22 |
| VCYT Veracyte Inc. | Sold out | 0.00% | −0.22 |
| ORCL Oracle Corp. | Sold out | 0.00% | −0.22 |
| CXT Crane NXT Co. | Sold out | 0.00% | −0.21 |
| RMBS Rambus Inc. | Reduce -54.1% | 0.13% | −0.20 |
| PSN Parsons Corp. | Reduce -56.7% | 0.24% | −0.20 |
| VC Visteon Corp. | Sold out | 0.00% | −0.19 |
| HALO Halozyme Therapeutics Inc. | Sold out | 0.00% | −0.19 |
| GTLS Chart Industries Inc. | Sold out | 0.00% | −0.19 |
| GIII G-III Apparel Group Ltd. | Sold out | 0.00% | −0.18 |
| HAE Haemonetics Corp. | Sold out | 0.00% | −0.18 |
| XOP SS SPDR S&P Og Exp & Prod | Sold out | 0.00% | −0.17 |
| PHM Pultegroup Inc. | Sold out | 0.00% | −0.17 |
| ETRN Equitrans Midstream Corp. | Sold out | 0.00% | −0.16 |
| MMS Maximus Inc. | Sold out | 0.00% | −0.15 |
| PJT PJT Partners Inc. Class A | Reduce -52.9% | 0.10% | −0.15 |
| MSFT Microsoft Corp. | Reduce -6.8% | 6.71% | −0.15 |
| LNG Cheniere Energy Inc. | Reduce -62.3% | 0.07% | −0.14 |
| CELH Celsius Holdings Inc. | Sold out | 0.00% | −0.14 |
| AR Antero Resources Corp. | Reduce -63.7% | 0.11% | −0.14 |
| NE Noble Corp. PLC | Reduce -50.0% | 0.13% | −0.14 |
| SYNA Synaptics Inc. | Reduce -46.4% | 0.10% | −0.13 |
| HES Hess Corp. | Sold out | 0.00% | −0.12 |
| HAS Hasbro Inc. | Sold out | 0.00% | −0.12 |
| MRCY Mercury Systems Inc. | Sold out | 0.00% | −0.12 |
| GENI Genius Sports Ltd. | Reduce -62.3% | 0.06% | −0.12 |
| HDSN Hudson Technologies Inc. | Sold out | 0.00% | −0.11 |
Portfolio Buys Q4 2023 → Q1 2024
| VLO Valero Energy Corp. | Add +1936.1% | 0.92% | +0.88 |
| AXP American Express Co. | Add +2441.1% | 0.64% | +0.62 |
| XLV SS Health Care Select Sector | New | 0.44% | +0.44 |
| AMAT Applied Materials Inc. | Add +21.9% | 1.30% | +0.41 |
| XBI SS SPDR S&P Biotech ETF | New | 0.40% | +0.40 |
| UBER Uber Technologies Inc. | New | 0.38% | +0.38 |
| ISRG Intuitive Surgical Inc. | Add +12.7% | 1.86% | +0.37 |
| LRCX Lam Research Corp. | Add +2.7% | 2.19% | +0.36 |
| ETN Eaton Corp. PLC | Add +181.7% | 0.50% | +0.35 |
| RDNT Radnet Inc. | New | 0.30% | +0.30 |
| XOM Exxon Mobil Corp. | Add +41.3% | 0.86% | +0.30 |
| HEES H&E Equipment Services Inc. | New | 0.29% | +0.29 |
| ASH Ashland Inc. | New | 0.29% | +0.29 |
| NTRA Natera Inc. | New | 0.28% | +0.28 |
| RACE Ferrari NV | Add +495.5% | 0.33% | +0.28 |
| FCX Freeport-McMoran Inc. | Add +1577.6% | 0.30% | +0.28 |
| CRM Salesforce Inc. | New | 0.27% | +0.27 |
| SKY Champion Homes Inc. | New | 0.26% | +0.26 |
| NXT Nextpower Inc. | New | 0.24% | +0.24 |
| SF Stifel Financial Corp. | New | 0.23% | +0.23 |
| ADMA Adma Biologics Inc. | New | 0.22% | +0.22 |
| H Hyatt Hotels Corp. Class A | New | 0.22% | +0.22 |
| ASO Academy Sports & Outdoors Inc. | New | 0.21% | +0.21 |
| CWH Camping World Holdings Inc. Class A | New | 0.21% | +0.21 |
| DELL Dell Technologies -C | New | 0.21% | +0.21 |
| FROG Jfrog Ltd. | New | 0.21% | +0.21 |
| UNP Union Pacific Corp. | Add +33.4% | 1.01% | +0.20 |
| RUSHA Rush Enterprises Inc. Class A | New | 0.19% | +0.19 |
| VKTX Viking Therapeutics Inc. | New | 0.19% | +0.19 |
| WD Walker & Dunlop Inc. | New | 0.18% | +0.18 |
| CRDO Credo Technology Group Holdi | New | 0.16% | +0.16 |
| FTAI Ftai Aviation Ltd. | Add +37.2% | 0.34% | +0.16 |
| PVH PVH Corp. | New | 0.14% | +0.14 |
| KRUS Kura Sushi USA Inc. Class A | New | 0.14% | +0.14 |
| PRCT Procept Biorobotics Corp. | New | 0.12% | +0.12 |
| RYTM Rhythm Pharmaceuticals Inc. | New | 0.12% | +0.12 |
| GTES Gates Industrial Corp. UK Ltd. | New | 0.11% | +0.11 |
| AGYS Agilysys Inc. | Add +197.6% | 0.18% | +0.11 |
| IMVT Immunovant Inc. | New | 0.11% | +0.11 |
| AXSM Axsome Therapeutics Inc. | New | 0.11% | +0.11 |
| MDGL Madrigal Pharmaceuticals Inc. | New | 0.10% | +0.10 |
| MOD Modine Manufacturing Co. | Add +4.8% | 0.28% | +0.10 |
| RIG Transocean Ltd. | Add +823.5% | 0.11% | +0.10 |
| EFOR Everforth Inc. | Add +56.3% | 0.26% | +0.10 |
| WEX Wex Inc. | Add +36.2% | 0.24% | +0.09 |
| GAP The Gap Inc. | Add +10.1% | 0.29% | +0.08 |
| EXP Eagle Materials Inc. | Add +10.5% | 0.25% | +0.07 |
| BLBD Blue Bird Corp. | Add +6.6% | 0.22% | +0.07 |
| ARDX Ardelyx Inc. | New | 0.07% | +0.07 |
| DO Diamond Offshore Drilling Inc. | New | 0.06% | +0.06 |
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 309 | $3.7B | NVDA, GOOGL, AAPL, LRCX, MSFT |
| Q1 2026 | 292 | $3.0B | NVDA, GOOGL, MSFT, SPIB, AAPL |
| Q4 2025 | 294 | $3.4B | NVDA, MSFT, GOOGL, AMZN, AAPL |
| Q3 2025 | 284 | $3.6B | CARK, NVDA, MSFT, META, AAPL |
| Q2 2025 | 275 | $3.3B | CARK, NVDA, MSFT, AMZN, META |
| Q1 2025 | 280 | $2.9B | CARK, AAPL, NVDA, AMZN, MSFT |
| Q4 2024 | 283 | $2.9B | AAPL, NVDA, MSFT, SPIB, AMZN |
| Q3 2024 | 272 | $2.5B | MSFT, NVDA, AAPL, AMZN, GOOGL |
| Q2 2024 | 271 | $2.4B | NVDA, MSFT, AAPL, AMZN, GOOGL |
| Q1 2024 | 278 | $2.4B | MSFT, NVDA, AAPL, AMZN, META |