ArcellxACLX
13F holders, Q3 2025 (September 30)209holders +7
28new positions
20sold out
5famous investors
$82.06avg. 13F price*
At the end of Q3 2025, 209 institutions reported holding Arcellx Inc. (ACLX) in their 13F filings, up 7 from Q2 2025. 28 opened new positions and 20 sold out. The largest holders were Gilead Sciences, Inc. ($551.8M), T. Rowe Price Investment Management, Inc. ($521.5M) and FMR LLC ($473.0M). 5 famous investors held it, including Ron Baron (0.1% of Baron Capital (BAMCO)'s portfolio), Ken Griffin (0.1% of Citadel Advisors's portfolio) and Joel Greenblatt (0.0% of Gotham Asset Management's portfolio).
- Company
- Arcellx Inc.
- CUSIP
- 03940C100
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 28 | $53.1M |
| Exits | 20 | $30.9M |
All 13F filers, Q2 2025 → Q3 2025: 6,886,780 shares bought and 5,187,208 shares sold, net +1,699,572 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 209 holders
| Gilead Sciences, Inc. | 30.80% | No change | 6,720,803 | $551.8M |
| T. Rowe Price Investment Management, Inc. | 0.32% | Add +226.8% | 6,352,356 | $521.5M |
| FMR LLC | 0.02% | Reduce -3.5% | 5,761,317 | $473.0M |
| Paradigm Biocapital Advisors LP | 11.29% | No change | 4,649,016 | $381.7M |
| Vanguard Group Inc. | 0.00% | Reduce -1.0% | 3,907,087 | $320.8M |
| BlackRock, Inc. | 0.00% | Reduce -2.3% | 3,387,896 | $278.1M |
| NEA Management Company, LLC | 13.72% | Reduce -18.7% | 3,045,262 | $250.0M |
| Ra Capital Management, L.P. | 3.07% | No change | 3,036,527 | $249.3M |
| Perceptive Advisors LLC | 5.94% | Reduce -0.4% | 2,468,353 | $202.7M |
| SR One Capital Management, LP | 27.86% | No change | 2,346,630 | $192.7M |
| State Street Corp. | 0.00% | Reduce -4.2% | 1,526,027 | $125.3M |
| T. Rowe Price Associates Inc. | 0.01% | Reduce -12.1% | 1,264,051 | $103.8M |
| Vestal Point Capital, LP | 4.66% | Reduce -54.5% | 1,250,000 | $102.6M |
| AJU IB Investment Co., Ltd. | 74.71% | No change | 1,047,557 | $86.0M |
| Citadel Advisors | 0.07% | Add +414.9% | 1,021,453 | $83.9M |
| Janus Henderson Group PLC | 0.04% | Reduce -0.9% | 1,013,921 | $83.2M |
| Geode Capital Management, LLC | 0.00% | Reduce -3.7% | 926,304 | $76.1M |
| JPMorgan Chase & Co. | 0.00% | Reduce -9.7% | 882,503 | $72.5M |
| Capital World Investors | 0.01% | No change | 783,011 | $64.3M |
| Cormorant Asset Management, LP | 4.39% | Reduce -3.1% | 775,000 | $63.6M |
| Baron Capital (BAMCO) | 0.12% | Add +6.2% | 550,236 | $45.2M |
| Schonfeld Strategic Advisors LLC | 0.29% | Add +44.3% | 500,315 | $41.1M |
| Affinity Asset Advisors, LLC | 3.94% | Add +1.0% | 500,000 | $41.0M |
| Goldman Sachs Group Inc. | 0.01% | Reduce -12.2% | 448,441 | $36.8M |
| Morgan Stanley | 0.00% | Reduce -16.4% | 432,882 | $35.5M |
| Lord, Abbett & Co. LLC | 0.11% | Add +25.6% | 424,000 | $34.8M |
| Pictet Asset Management Holding SA | 0.03% | Add +9.8% | 420,805 | $34.5M |
| American Century Companies Inc. | 0.02% | Reduce -4.5% | 411,930 | $33.8M |
| Deutsche Bank AG | 0.01% | Add +21.2% | 399,319 | $32.8M |
| Northern Trust Corp. | 0.00% | Reduce -3.3% | 334,551 | $27.5M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +3.5% | 330,486 | $27.1M |
| First Turn Management, LLC | 3.87% | Add +45.8% | 313,733 | $25.8M |
| Voya Investment Management LLC | 0.02% | Reduce -10.3% | 247,408 | $20.3M |
| Woodline Partners LP | 0.09% | No change | 241,389 | $19.8M |
| TD Asset Management Inc | 0.02% | Add +124.9% | 232,708 | $19.1M |
| Wellington Management Group LLP | 0.00% | Reduce -3.8% | 232,199 | $19.1M |
| UBS Group AG | 0.00% | Add +27.2% | 189,376 | $15.5M |
| Rock Springs Capital Management LP | 0.86% | Reduce -3.9% | 178,982 | $14.7M |
| Victory Capital Management Inc. | 0.01% | Reduce -13.9% | 172,049 | $14.1M |
| Bank of America Corp. | 0.00% | Reduce -34.7% | 171,235 | $14.1M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -36.9% | 168,631 | $13.8M |
| Baker Bros. Advisors LP | 0.10% | No change | 166,825 | $13.7M |
| Ameriprise Financial Inc. | 0.00% | Add +36.3% | 165,649 | $13.6M |
| Logos Global Management LP | 1.34% | New | 165,000 | $13.5M |
| Integral Health Asset Management, LLC | 0.90% | New | 150,000 | $12.3M |
| Parkman Healthcare Partners LLC | 1.35% | Reduce -14.0% | 149,848 | $12.3M |
| Russell Investments Group, Ltd. | 0.01% | Add +12.1% | 143,534 | $11.8M |
| Bank of New York Mellon Corp | 0.00% | Reduce -0.4% | 131,524 | $10.8M |
| Raymond James Financial Inc. | 0.00% | Reduce -5.6% | 126,503 | $10.4M |
| Barclays PLC | 0.00% | Reduce -22.8% | 107,656 | $8.8M |
| Soleus Capital Management, L.P. | 0.44% | Reduce -18.7% | 100,000 | $8.2M |
| HighVista Strategies LLC | 1.94% | Add +169.3% | 96,177 | $7.9M |
| Citigroup Inc. | 0.01% | Reduce -12.6% | 92,845 | $7.6M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -75.7% | 83,524 | $6.9M |
| Nuveen, LLC | 0.00% | Reduce -4.6% | 83,427 | $6.8M |
| Samsara Biocapital, LLC | 0.87% | Reduce -20.0% | 81,165 | $6.7M |
| Monaco Asset Management SAM | 2.44% | New | 78,589 | $6.5M |
| Jane Street Group, LLC | 0.01% | New | 74,481 | $6.1M |
| BNP Paribas Financial Markets | 0.00% | Reduce -8.7% | 68,833 | $5.7M |
| Rhenman & Partners Asset Management AB | 0.59% | Reduce -3.0% | 65,250 | $5.4M |
| Royal Bank of Canada | 0.00% | Add +4329.4% | 62,898 | $5.2M |
| Pier Capital, LLC | 0.77% | Reduce -5.4% | 60,215 | $4.9M |
| Nicholas Investment Partners, LP | 0.42% | Add +43.4% | 58,894 | $4.8M |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -10.5% | 53,853 | $4.4M |
| Swiss National Bank | 0.00% | Reduce -15.1% | 53,400 | $4.4M |
| Rhumbline Advisers | 0.00% | Reduce -4.9% | 52,428 | $4.3M |
| Pathway Capital Management, LP | 20.60% | New | 51,051 | $4.2M |
| Susquehanna Portfolio Strategies, LLC | 0.07% | No change | 50,938 | $4.2M |
| Jain Global LLC | 0.06% | Add +250.2% | 50,011 | $4.1M |
| Rafferty Asset Management, LLC | 0.01% | Reduce -12.7% | 49,240 | $4.0M |
| Balyasny Asset Management L.P. | 0.01% | Reduce -11.1% | 48,691 | $4.0M |
| Alliancebernstein L.P. | 0.00% | Reduce -3.8% | 46,327 | $3.8M |
| Edmond DE Rothschild Holding S.A. | 0.06% | No change | 45,480 | $3.7M |
| Schroder Investment Management Group | 0.00% | Reduce -29.2% | 42,478 | $3.4M |
| Millennium Management | 0.00% | Reduce -57.3% | 40,341 | $3.3M |
| Tema ETFs LLC | 0.25% | Add +8.7% | 36,809 | $3.0M |
| NEOS Investment Management LLC | 0.02% | Add +8.7% | 36,809 | $3.0M |
| Dark Forest Capital Management LP | 0.11% | Add +83.7% | 36,794 | $3.0M |
| Wells Fargo & Company | 0.00% | Add +12.5% | 34,426 | $2.8M |
| Invesco Ltd. | 0.00% | Add +6.3% | 33,668 | $2.8M |
| Sector Gamma As | 0.65% | Add +28.0% | 32,009 | $2.6M |
| AQR Capital Management | 0.00% | Add +270.6% | 31,715 | $2.6M |
| ADAR1 Capital Management, LLC | 0.26% | Add +125.5% | 31,484 | $2.6M |
| California State Teachers Retirement System | 0.00% | Add +0.0% | 30,088 | $2.5M |
| Legal & General Group Plc | 0.00% | Reduce -16.7% | 28,993 | $2.4M |
| DekaBank Deutsche Girozentrale | 0.00% | No change | 30,000 | $2.3M |
| Blue Owl Capital Holdings LP | 0.69% | New | 26,823 | $2.2M |
| Knott David M Jr | 0.88% | No change | 25,700 | $2.1M |
| SummitTX Capital, L.P. | 0.09% | New | 25,448 | $2.1M |
| Congress Asset Management Co. | 0.01% | Add +0.4% | 25,302 | $2.1M |
| Alps Advisors Inc. | 0.01% | Reduce -15.1% | 25,188 | $2.1M |
| State of Wisconsin Investment Board | 0.00% | Reduce -13.0% | 22,238 | $1.8M |
| Harbor Capital Advisors, Inc. | 0.14% | Reduce -12.3% | 21,674 | $1.8M |
| STRS Ohio | 0.01% | Add +50.8% | 21,569 | $1.8M |
| New York State Common Retirement Fund | 0.00% | Add +14.2% | 20,345 | $1.7M |
| Erste Asset Management GmbH | 0.02% | No change | 21,000 | $1.7M |
| MetLife Investment Management, LLC | 0.01% | Reduce -8.8% | 20,023 | $1.6M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -19.4% | 18,402 | $1.5M |
| Y-Intercept (Hong Kong) Ltd | 0.03% | New | 15,508 | $1.3M |
| Jasper Ridge Partners, L.P. | 0.03% | Add +27.8% | 15,107 | $1.2M |
"% of holder's portfolio" is ACLX's weight in each manager's 13F, not the share of Arcellx Inc. the manager owns.