Arcellx, Inc.
ACLXDelisted Apr 28, 2026- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001786205
Arcellx, Inc. was delisted on Apr 28, 2026; its insiders filed their last Form 4 on Apr 28, 2026; 240 institutions reported holding it in 13F filings for Q1 2026, worth $6.52B in total; Soros Fund Management was the only superinvestor holding it.
13F holders, Q2 2025
Institutional positions in Arcellx, Inc. as of Jun 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 203
- +6 vs. Q1 2025
- Shares held
- 61.4M
- −195.7K (−0.3%) vs. Q1 2025
- Total value
- $4.01B
- −$32.5M (−0.8%) vs. Q1 2025
- New holders
- 30
- 61 more added
- Sold out
- 24
- 82 more reduced
1 institution that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ACLX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 2 | $3.43M |
| Q1 2026 | 240 | $6.52B |
| Q4 2025 | 218 | $4.34B |
| Q3 2025 | 209 | $5.18B |
| Q2 2025 | 203 | $4.01B |
| Q1 2025 | 198 | $4.04B |
| Q4 2024 | 211 | $4.54B |
| Q3 2024 | 186 | $4.13B |
| Q2 2024 | 167 | $2.77B |
| Q1 2024 | 183 | $3.27B |
| Q4 2023 | 156 | $2.59B |
| Q3 2023 | 136 | $1.71B |
| Q2 2023 | 138 | $1.52B |
| Q1 2023 | 117 | $1.40B |
| Q4 2022 | 125 | $1.30B |
| Q3 2022 | 74 | $781.8M |
| Q2 2022 | 68 | $621.5M |
| Q1 2022 | 49 | $357.9M |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q2 2025
Shares, value and share of portfolio for each institution holding Arcellx, Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| STRS Ohio | 14,300 | $941.7K | 0.00% | 00.0% | Unchanged |
| Brevan Howard Capital Management LP | 14,436 | $950.6K | 0.01% | +14,436 | New |
| Squarepoint Ops LLC | 16,044 | $1.06M | 0.00% | +16,044 | New |
| Intech Investment Management LLC | 16,480 | $1.09M | 0.01% | −5,487−25.0% | Reduced |
| XTX Topco Ltd | 16,787 | $1.11M | 0.05% | +16,787 | New |
| Cinctive Capital Management LP | 17,539 | $1.15M | 0.06% | +17,539 | New |
| New York State Common Retirement Fund | 17,815 | $1.17M | 0.00% | +4,492+33.7% | Added |
| Dark Forest Capital Management LP | 20,033 | $1.32M | 0.05% | −51,037−71.8% | Reduced |
| Erste Asset Management GmbH | 21,000 | $1.37M | 0.01% | 00.0% | Unchanged |
| MetLife Investment Management | 21,949 | $1.45M | 0.01% | −3,661−14.3% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 22,818 | $1.50M | 0.00% | −5,935−20.6% | Reduced |
| Tudor Investment Corp Et Al | 23,197 | $1.53M | 0.01% | +23,197 | New |
| Harbor Capital Advisors, Inc. | 24,721 | $1.63M | 0.07% | +1,885+8.3% | Added |
| Sector Gamma AS | 25,000 | $1.65M | 0.54% | −10,000−28.6% | Reduced |
| Congress Asset Management Co | 25,209 | $1.66M | 0.01% | +102+0.4% | Added |
| State of Wisconsin Investment Board | 25,550 | $1.68M | 0.00% | −12,553−32.9% | Reduced |
| Knott David M Jr | 25,700 | $1.69M | 0.77% | +10,700+71.3% | Added |
| HealthInvest Partners AB | 25,732 | $1.69M | 0.73% | −18,439−41.7% | Reduced |
| Caption Management, LLC | 26,756 | $1.76M | 0.16% | −40,313−60.1% | Reduced |
| Federated Hermes, Inc. | 26,935 | $1.77M | 0.00% | −19,289−41.7% | Reduced |
| Alps Advisors Inc | 29,660 | $1.95M | 0.01% | +29,660 | New |
| California State Teachers Retirement System | 30,087 | $1.98M | 0.00% | −249−0.8% | Reduced |
| Wells Fargo & Company | 30,589 | $2.01M | 0.00% | +3,755+14.0% | Added |
| Invesco Ltd. | 31,681 | $2.09M | 0.00% | +1,439+4.8% | Added |
| NEOS Investment Management LLC | 33,869 | $2.23M | 0.03% | +5,419+19.0% | Added |
| Tema ETFs LLC | 33,869 | $2.23M | 0.59% | +5,419+19.0% | Added |
| Legal & General Group Plc | 34,812 | $2.29M | 0.00% | −6,795−16.3% | Reduced |
| DekaBank Deutsche Girozentrale | 30,000 | $2.29M | 0.00% | 00.0% | Unchanged |
| HighVista Strategies LLC | 35,714 | $2.35M | 0.86% | −11,782−24.8% | Reduced |
| Nicholas Investment Partners, LP | 41,067 | $2.70M | 0.24% | +41,067 | New |
| Trexquant Investment LP | 43,183 | $2.84M | 0.03% | +43,183 | New |
| Edmond de Rothschild Holding S.A. | 45,480 | $2.99M | 0.05% | 00.0% | Unchanged |
| Alliancebernstein L.P. | 48,155 | $3.17M | 0.00% | −3,140−6.1% | Reduced |
| Susquehanna Portfolio Strategies, LLC | 50,938 | $3.35M | 0.07% | +50,938 | New |
| Balyasny Asset Management LLC | 54,792 | $3.61M | 0.01% | +54,792 | New |
| Rhumbline Advisers | 55,140 | $3.63M | 0.00% | −8,611−13.5% | Reduced |
| Rafferty Asset Management, LLC | 56,371 | $3.71M | 0.01% | −2,136−3.7% | Reduced |
| Schroder Investment Management Group | 60,000 | $3.95M | 0.00% | +60,000 | New |
| Manufacturers Life Insurance Company, The | 60,155 | $3.96M | 0.00% | −26,673−30.7% | Reduced |
| Swiss National Bank | 62,900 | $4.14M | 0.00% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 62,933 | $4.14M | 0.01% | +1,310+2.1% | Added |
| Pier Capital, LLC | 63,634 | $4.19M | 0.64% | −4,342−6.4% | Reduced |
| Voloridge Investment Management, LLC | 66,422 | $4.37M | 0.02% | −11,814−15.1% | Reduced |
| Rhenman & Partners Asset Management AB | 67,250 | $4.43M | 0.56% | +23,750+54.6% | Added |
| Decheng Capital LLC | 547,609 | $4.46M | 1.13% | +497,609+995.2% | Added |
| BNP Paribas Arbitrage, SA | 75,429 | $4.97M | 0.00% | +31,075+70.1% | Added |
| Nuveen, LLC | 87,418 | $5.76M | 0.00% | −24,368−21.8% | Reduced |
| Millennium Management LLC | 94,562 | $6.23M | 0.01% | +43,506+85.2% | Added |
| Great Point Partners LLC | 100,000 | $6.58M | 4.28% | +55,000+122.2% | Added |
| Samsara BioCapital, LLC | 101,457 | $6.68M | 1.37% | −33,819−25.0% | Reduced |
| TD Asset Management Inc | 103,460 | $6.81M | 0.01% | −64,860−38.5% | Reduced |
| Citigroup Inc | 106,272 | $7.00M | 0.00% | +26,193+32.7% | Added |
| Marshall Wace, LLP | 111,808 | $7.36M | 0.01% | +96,408+626.0% | Added |
| Ameriprise Financial Inc | 121,518 | $8.00M | 0.00% | +66,081+119.2% | Added |
| Soleus Capital Management, L.P. | 123,031 | $8.10M | 0.56% | −30,000−19.6% | Reduced |
| Russell Investments Group, Ltd. | 128,065 | $8.43M | 0.01% | −23,958−15.8% | Reduced |
| Bank of New York Mellon Corp | 132,069 | $8.70M | 0.00% | −11,548−8.0% | Reduced |
| Raymond James Financial Inc | 134,047 | $8.83M | 0.00% | +5,269+4.1% | Added |
| Barclays PLC | 139,378 | $9.18M | 0.00% | +61,739+79.5% | Added |
| UBS Group AG | 148,917 | $9.81M | 0.00% | −60,655−28.9% | Reduced |
| Baker Bros. Advisors LP | 166,825 | $11.0M | 0.11% | +166,825 | New |
| Parkman Healthcare Partners LLC | 174,276 | $11.5M | 1.33% | +106,886+158.6% | Added |
| Rock Springs Capital Management LP | 186,314 | $12.3M | 0.76% | +186,314 | New |
| Citadel Advisors LLC | 198,363 | $13.1M | 0.01% | −527,764−72.7% | Reduced |
| Victory Capital Management Inc | 199,741 | $13.2M | 0.01% | +21,631+12.1% | Added |
| StemPoint Capital LP | 201,452 | $13.3M | 4.27% | −72,322−26.4% | Reduced |
| First Turn Management, LLC | 215,223 | $14.2M | 2.64% | +215,223 | New |
| Woodline Partners LP | 241,389 | $15.9M | 0.08% | +76,084+46.0% | Added |
| Wellington Management Group LLP | 241,409 | $15.9M | 0.00% | +222,970+1,209.2% | Added |
| Bank of America Corp | 262,355 | $17.3M | 0.00% | +98,685+60.3% | Added |
| UBS Asset Management Americas Inc | 267,111 | $17.6M | 0.00% | +2,355+0.9% | Added |
| Voya Investment Management LLC | 275,676 | $18.2M | 0.02% | −1,426−0.5% | Reduced |
| Charles Schwab Investment Management Inc | 319,272 | $21.0M | 0.00% | −17,677−5.2% | Reduced |
| Deutsche Bank AG | 329,364 | $21.7M | 0.01% | −14,330−4.2% | Reduced |
| Lord, Abbett & Co. LLC | 337,576 | $22.2M | 0.07% | −326,950−49.2% | Reduced |
| Dimensional Fund Advisors LP | 343,126 | $22.6M | 0.01% | −143,143−29.4% | Reduced |
| Northern Trust Corp | 345,975 | $22.8M | 0.00% | −57,866−14.3% | Reduced |
| Schonfeld Strategic Advisors LLC | 346,728 | $22.8M | 0.17% | +113,206+48.5% | Added |
| Pictet Asset Management Holding SA | 383,136 | $25.2M | 0.03% | +377,649+6,882.6% | Added |
| American Century Companies Inc | 431,466 | $28.4M | 0.02% | +377,145+694.3% | Added |
| Affinity Asset Advisors, LLC | 495,000 | $32.6M | 4.82% | −35,000−6.6% | Reduced |
| Goldman Sachs Group Inc | 510,605 | $33.6M | 0.01% | +335,817+192.1% | Added |
| Morgan Stanley | 517,513 | $34.1M | 0.00% | +55,180+11.9% | Added |
| Bamco Inc | 518,009 | $34.1M | 0.09% | +50,748+10.9% | Added |
| Capital World Investors | 783,011 | $51.6M | 0.01% | +73,637+10.4% | Added |
| Cormorant Asset Management, LP | 800,000 | $52.7M | 3.92% | −250,000−23.8% | Reduced |
| Geode Capital Management, LLC | 961,778 | $63.3M | 0.00% | −58,762−5.8% | Reduced |
| JPMorgan Chase & Co | 976,968 | $64.3M | 0.00% | +293,387+42.9% | Added |
| Janus Henderson Group PLC | 1,023,582 | $67.4M | 0.03% | −486,912−32.2% | Reduced |
| AJU IB Investment Co., Ltd. | 1,047,557 | $69.0M | 75.07% | 00.0% | Unchanged |
| Price T Rowe Associates Inc | 1,438,773 | $94.7M | 0.01% | −400,851−21.8% | Reduced |
| State Street Corp | 1,592,313 | $104.9M | 0.00% | −74,138−4.4% | Reduced |
| T. Rowe Price Investment Management, Inc. | 1,943,726 | $128.0M | 0.08% | +278,588+16.7% | Added |
| Sr One Capital Management, LP | 2,346,630 | $154.5M | 33.49% | 00.0% | Unchanged |
| Perceptive Advisors LLC | 2,478,000 | $163.2M | 6.12% | −448,478−15.3% | Reduced |
| Vestal Point Capital, LP | 2,750,000 | $181.1M | 9.53% | +362,280+15.2% | Added |
| Ra Capital Management, L.P. | 3,036,527 | $200.0M | 3.37% | 00.0% | Unchanged |
| BlackRock, Inc. | 3,468,184 | $228.4M | 0.00% | −499,385−12.6% | Reduced |
| NEA Management Company, LLC | 3,745,262 | $246.6M | 18.56% | 00.0% | Unchanged |
| Vanguard Group Inc | 3,944,885 | $259.8M | 0.00% | −40,271−1.0% | Reduced |