ArcellxACLX
13F holders, Q1 2025 (March 31)197holders −14
24new positions
37sold out
6famous investors
$65.66avg. 13F price*
At the end of Q1 2025, 197 institutions reported holding Arcellx Inc. (ACLX) in their 13F filings, down 14 from Q4 2024. 24 opened new positions and 37 sold out. The largest holders were Gilead Sciences, Inc. ($440.9M), FMR LLC ($413.5M) and Paradigm Biocapital Advisors LP ($294.7M). 6 famous investors held it, including Ron Baron (0.1% of Baron Capital (BAMCO)'s portfolio), Ken Griffin (0.0% of Citadel Advisors's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Arcellx Inc.
- CUSIP
- 03940C100
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 24 | $39.9M |
| Exits | 37 | $57.9M |
All 13F filers, Q4 2024 → Q1 2025: 7,503,794 shares bought and 5,096,966 shares sold, net +2,406,828 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 197 holders
| Gilead Sciences, Inc. | 37.32% | No change | 6,720,803 | $440.9M |
| FMR LLC | 0.03% | Reduce -20.8% | 6,303,679 | $413.5M |
| Paradigm Biocapital Advisors LP | 13.56% | Add +2.8% | 4,492,032 | $294.7M |
| Vanguard Group Inc. | 0.00% | Add +19.7% | 3,985,156 | $261.4M |
| BlackRock, Inc. | 0.01% | Add +3.0% | 3,967,569 | $260.3M |
| NEA Management Company, LLC | 18.92% | No change | 3,745,262 | $245.7M |
| Ra Capital Management, L.P. | 3.33% | Add +8.9% | 3,036,527 | $199.2M |
| Perceptive Advisors LLC | 6.81% | Reduce -15.9% | 2,926,478 | $192.0M |
| Vestal Point Capital, LP | 11.19% | Add +402.7% | 2,387,720 | $156.6M |
| SR One Capital Management, LP | 39.54% | No change | 2,346,630 | $153.9M |
| T. Rowe Price Associates Inc. | 0.01% | Reduce -13.3% | 1,839,624 | $120.7M |
| State Street Corp. | 0.00% | Reduce -6.1% | 1,666,451 | $109.3M |
| T. Rowe Price Investment Management, Inc. | 0.07% | Add +135.9% | 1,665,138 | $109.2M |
| Janus Henderson Group PLC | 0.06% | Reduce -3.0% | 1,510,494 | $102.6M |
| Cormorant Asset Management, LP | 5.22% | Reduce -19.2% | 1,050,000 | $68.9M |
| AJU IB Investment Co., Ltd. | 81.77% | No change | 1,047,557 | $68.7M |
| Geode Capital Management, LLC | 0.01% | Add +4.2% | 1,020,540 | $67.0M |
| Citadel Advisors | 0.05% | Add +2778.5% | 726,127 | $47.6M |
| Capital World Investors | 0.01% | Add +180.5% | 709,374 | $46.5M |
| JPMorgan Chase & Co. | 0.00% | Add +204.6% | 683,581 | $44.8M |
| Lord, Abbett & Co. LLC | 0.16% | Reduce -31.8% | 664,526 | $43.6M |
| Affinity Asset Advisors, LLC | 5.76% | Add +24.7% | 530,000 | $34.8M |
| Dimensional Fund Advisors LP | 0.01% | Add +59.4% | 486,269 | $31.9M |
| Baron Capital (BAMCO) | 0.09% | Add +34.1% | 467,261 | $30.7M |
| Morgan Stanley | 0.00% | Reduce -25.2% | 462,333 | $30.3M |
| Northern Trust Corp. | 0.00% | Reduce -1.7% | 403,841 | $26.5M |
| Deutsche Bank AG | 0.01% | Reduce -0.2% | 343,694 | $22.5M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -1.8% | 336,949 | $22.1M |
| Voya Investment Management LLC | 0.02% | Add +103.5% | 277,102 | $18.2M |
| Stempoint Capital LP | 5.74% | New | 273,774 | $18.0M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -1.0% | 264,756 | $17.4M |
| Schonfeld Strategic Advisors LLC | 0.10% | Add +613.3% | 233,522 | $15.3M |
| Artia Global Partners LP | 4.41% | Reduce -0.3% | 229,085 | $15.0M |
| UBS Group AG | 0.00% | Add +1.0% | 209,572 | $13.7M |
| Victory Capital Management Inc. | 0.01% | Reduce -3.3% | 178,110 | $11.7M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -39.7% | 174,788 | $11.5M |
| Qube Research & Technologies Ltd | 0.02% | Add +12.1% | 173,059 | $11.4M |
| TD Asset Management Inc | 0.01% | Add +2.7% | 168,320 | $11.0M |
| Woodline Partners LP | 0.07% | Add +31.6% | 165,305 | $10.8M |
| Bank of America Corp. | 0.00% | Add +10.5% | 163,670 | $10.7M |
| Soleus Capital Management, L.P. | 0.79% | Add +26.4% | 153,031 | $10.0M |
| Russell Investments Group, Ltd. | 0.01% | Reduce -43.6% | 152,023 | $10.0M |
| Bank of New York Mellon Corp | 0.00% | Reduce -0.6% | 143,617 | $9.4M |
| Samsara Biocapital, LLC | 1.58% | Reduce -46.7% | 135,276 | $8.9M |
| Raymond James Financial Inc. | 0.00% | Reduce -1.4% | 128,778 | $8.4M |
| Nuveen, LLC | 0.00% | — | 111,786 | $7.3M |
| Manufacturers Life Insurance Company, The | 0.01% | Reduce -11.7% | 86,828 | $5.7M |
| Citigroup Inc. | 0.00% | Add +15.4% | 80,079 | $5.3M |
| Voloridge Investment Management, LLC | 0.02% | Reduce -56.1% | 78,236 | $5.1M |
| Barclays PLC | 0.00% | Reduce -15.2% | 77,639 | $5.1M |
| Dark Forest Capital Management LP | 0.21% | Add +342.3% | 71,070 | $4.7M |
| Candriam S.C.A. | 0.03% | Reduce -63.8% | 70,538 | $4.6M |
| Renaissance Technologies | 0.01% | Add +38.5% | 68,000 | $4.5M |
| Pier Capital, LLC | 0.75% | New | 67,976 | $4.5M |
| Parkman Healthcare Partners LLC | 0.52% | Add +51.5% | 67,390 | $4.4M |
| First Trust Advisors LP | 0.00% | Reduce -49.9% | 67,201 | $4.4M |
| Caption Management, LLC | 0.20% | New | 67,069 | $4.4M |
| Rhumbline Advisers | 0.00% | Add +6.4% | 63,751 | $4.2M |
| Swiss National Bank | 0.00% | Reduce -0.8% | 62,900 | $4.1M |
| Susquehanna International Group, LLP | 0.01% | Add +44.9% | 61,623 | $4.0M |
| Rafferty Asset Management, LLC | 0.02% | Reduce -17.6% | 58,507 | $3.8M |
| Ameriprise Financial Inc. | 0.00% | Add +445.1% | 55,437 | $3.6M |
| American Century Companies Inc. | 0.00% | Add +84.5% | 54,321 | $3.6M |
| Alliancebernstein L.P. | 0.00% | Add +0.1% | 51,295 | $3.4M |
| Millennium Management | 0.00% | Add +128.2% | 51,056 | $3.3M |
| Decheng Capital LLC | 0.92% | Reduce -40.7% | 50,000 | $3.3M |
| HighVista Strategies LLC | 1.20% | Add +8.4% | 47,496 | $3.1M |
| Federated Hermes, Inc. | 0.01% | Reduce -70.4% | 46,224 | $3.0M |
| Edmond DE Rothschild Holding S.A. | 0.05% | No change | 45,480 | $3.0M |
| Readystate Asset Management LP | 0.27% | New | 45,058 | $3.0M |
| Great Point Partners LLC | 1.60% | New | 45,000 | $3.0M |
| BNP Paribas Financial Markets | 0.00% | Add +122.2% | 44,354 | $2.9M |
| Atle Fund Management AB | 1.28% | Add +5.0% | 44,171 | $2.9M |
| Allostery Investments LP | 4.16% | Add +25.7% | 44,000 | $2.9M |
| Rhenman & Partners Asset Management AB | 0.33% | No change | 43,500 | $2.9M |
| Legal & General Group Plc | 0.00% | Reduce -3.3% | 41,607 | $2.7M |
| State of Wisconsin Investment Board | 0.01% | Add +11.0% | 38,103 | $2.5M |
| Sector Gamma As | 0.74% | New | 35,000 | $2.3M |
| DekaBank Deutsche Girozentrale | 0.00% | No change | 30,000 | $2.1M |
| California State Teachers Retirement System | 0.00% | Reduce -2.0% | 30,336 | $2.0M |
| Invesco Ltd. | 0.00% | Add +13.9% | 30,242 | $2.0M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +5.1% | 28,753 | $1.9M |
| Tema ETFs LLC | 0.56% | Add +281.0% | 28,450 | $1.9M |
| NEOS Investment Management LLC | 0.04% | Add +281.0% | 28,450 | $1.9M |
| Franklin Resources Inc. | 0.00% | Reduce -48.4% | 27,007 | $1.8M |
| Empowered Funds, LLC | 0.03% | New | 26,954 | $1.8M |
| Wells Fargo & Company | 0.00% | Add +0.7% | 26,834 | $1.8M |
| MetLife Investment Management, LLC | 0.01% | Reduce -1.7% | 25,610 | $1.7M |
| Congress Asset Management Co. | 0.01% | Reduce -0.8% | 25,107 | $1.6M |
| Harbor Capital Advisors, Inc. | 0.07% | Reduce -2.7% | 22,836 | $1.5M |
| Intech Investment Management LLC | 0.01% | Add +27.7% | 21,967 | $1.4M |
| Erste Asset Management GmbH | 0.02% | No change | 21,000 | $1.4M |
| Corebridge Financial, Inc. | 0.01% | Reduce -0.0% | 21,428 | $1.4M |
| Wellington Management Group LLP | 0.00% | Reduce -6.4% | 18,439 | $1.2M |
| AQR Capital Management | 0.00% | Reduce -15.3% | 17,140 | $1.1M |
| PFM Health Sciences, LP | 0.08% | Reduce -72.6% | 15,488 | $1.0M |
| Creative Planning | 0.00% | Add +267.6% | 15,415 | $1.0M |
| Marshall Wace, LLP | 0.00% | New | 15,400 | $1.0M |
| Knott David M Jr | 0.46% | New | 15,000 | $984K |
| STRS Ohio | 0.00% | No change | 14,300 | $938K |
"% of holder's portfolio" is ACLX's weight in each manager's 13F, not the share of Arcellx Inc. the manager owns.