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 |
|---|---|---|---|---|---|
| Gilead Sciences, Inc. | 6,720,803 | $442.6M | 34.57% | 00.0% | Unchanged |
| FMR LLC | 5,972,151 | $393.3M | 0.02% | −331,528−5.3% | Reduced |
| Paradigm Biocapital Advisors LP | 4,649,016 | $306.1M | 13.07% | +156,984+3.5% | Added |
| Vanguard Group Inc | 3,944,885 | $259.8M | 0.00% | −40,271−1.0% | Reduced |
| NEA Management Company, LLC | 3,745,262 | $246.6M | 18.56% | 00.0% | Unchanged |
| BlackRock, Inc. | 3,468,184 | $228.4M | 0.00% | −499,385−12.6% | Reduced |
| Ra Capital Management, L.P. | 3,036,527 | $200.0M | 3.37% | 00.0% | Unchanged |
| Vestal Point Capital, LP | 2,750,000 | $181.1M | 9.53% | +362,280+15.2% | Added |
| Perceptive Advisors LLC | 2,478,000 | $163.2M | 6.12% | −448,478−15.3% | Reduced |
| Sr One Capital Management, LP | 2,346,630 | $154.5M | 33.49% | 00.0% | Unchanged |
| T. Rowe Price Investment Management, Inc. | 1,943,726 | $128.0M | 0.08% | +278,588+16.7% | Added |
| State Street Corp | 1,592,313 | $104.9M | 0.00% | −74,138−4.4% | Reduced |
| Price T Rowe Associates Inc | 1,438,773 | $94.7M | 0.01% | −400,851−21.8% | Reduced |
| AJU IB Investment Co., Ltd. | 1,047,557 | $69.0M | 75.07% | 00.0% | Unchanged |
| Janus Henderson Group PLC | 1,023,582 | $67.4M | 0.03% | −486,912−32.2% | Reduced |
| JPMorgan Chase & Co | 976,968 | $64.3M | 0.00% | +293,387+42.9% | Added |
| Geode Capital Management, LLC | 961,778 | $63.3M | 0.00% | −58,762−5.8% | Reduced |
| Cormorant Asset Management, LP | 800,000 | $52.7M | 3.92% | −250,000−23.8% | Reduced |
| Capital World Investors | 783,011 | $51.6M | 0.01% | +73,637+10.4% | Added |
| Bamco Inc | 518,009 | $34.1M | 0.09% | +50,748+10.9% | Added |
| Morgan Stanley | 517,513 | $34.1M | 0.00% | +55,180+11.9% | Added |
| Goldman Sachs Group Inc | 510,605 | $33.6M | 0.01% | +335,817+192.1% | Added |
| Affinity Asset Advisors, LLC | 495,000 | $32.6M | 4.82% | −35,000−6.6% | Reduced |
| American Century Companies Inc | 431,466 | $28.4M | 0.02% | +377,145+694.3% | Added |
| Pictet Asset Management Holding SA | 383,136 | $25.2M | 0.03% | +377,649+6,882.6% | Added |
| Schonfeld Strategic Advisors LLC | 346,728 | $22.8M | 0.17% | +113,206+48.5% | Added |
| Northern Trust Corp | 345,975 | $22.8M | 0.00% | −57,866−14.3% | Reduced |
| Dimensional Fund Advisors LP | 343,126 | $22.6M | 0.01% | −143,143−29.4% | Reduced |
| Lord, Abbett & Co. LLC | 337,576 | $22.2M | 0.07% | −326,950−49.2% | Reduced |
| Deutsche Bank AG | 329,364 | $21.7M | 0.01% | −14,330−4.2% | Reduced |
| Charles Schwab Investment Management Inc | 319,272 | $21.0M | 0.00% | −17,677−5.2% | Reduced |
| Voya Investment Management LLC | 275,676 | $18.2M | 0.02% | −1,426−0.5% | Reduced |
| UBS Asset Management Americas Inc | 267,111 | $17.6M | 0.00% | +2,355+0.9% | Added |
| Bank of America Corp | 262,355 | $17.3M | 0.00% | +98,685+60.3% | Added |
| Wellington Management Group LLP | 241,409 | $15.9M | 0.00% | +222,970+1,209.2% | Added |
| Woodline Partners LP | 241,389 | $15.9M | 0.08% | +76,084+46.0% | Added |
| First Turn Management, LLC | 215,223 | $14.2M | 2.64% | +215,223 | New |
| StemPoint Capital LP | 201,452 | $13.3M | 4.27% | −72,322−26.4% | Reduced |
| Victory Capital Management Inc | 199,741 | $13.2M | 0.01% | +21,631+12.1% | Added |
| Citadel Advisors LLC | 198,363 | $13.1M | 0.01% | −527,764−72.7% | Reduced |
| Rock Springs Capital Management LP | 186,314 | $12.3M | 0.76% | +186,314 | New |
| Parkman Healthcare Partners LLC | 174,276 | $11.5M | 1.33% | +106,886+158.6% | Added |
| Baker Bros. Advisors LP | 166,825 | $11.0M | 0.11% | +166,825 | New |
| UBS Group AG | 148,917 | $9.81M | 0.00% | −60,655−28.9% | Reduced |
| Barclays PLC | 139,378 | $9.18M | 0.00% | +61,739+79.5% | Added |
| Raymond James Financial Inc | 134,047 | $8.83M | 0.00% | +5,269+4.1% | Added |
| Bank of New York Mellon Corp | 132,069 | $8.70M | 0.00% | −11,548−8.0% | Reduced |
| Russell Investments Group, Ltd. | 128,065 | $8.43M | 0.01% | −23,958−15.8% | Reduced |
| Soleus Capital Management, L.P. | 123,031 | $8.10M | 0.56% | −30,000−19.6% | Reduced |
| Ameriprise Financial Inc | 121,518 | $8.00M | 0.00% | +66,081+119.2% | Added |
| Marshall Wace, LLP | 111,808 | $7.36M | 0.01% | +96,408+626.0% | Added |
| Citigroup Inc | 106,272 | $7.00M | 0.00% | +26,193+32.7% | Added |
| TD Asset Management Inc | 103,460 | $6.81M | 0.01% | −64,860−38.5% | Reduced |
| Samsara BioCapital, LLC | 101,457 | $6.68M | 1.37% | −33,819−25.0% | Reduced |
| Great Point Partners LLC | 100,000 | $6.58M | 4.28% | +55,000+122.2% | Added |
| Millennium Management LLC | 94,562 | $6.23M | 0.01% | +43,506+85.2% | Added |
| Nuveen, LLC | 87,418 | $5.76M | 0.00% | −24,368−21.8% | Reduced |
| BNP Paribas Arbitrage, SA | 75,429 | $4.97M | 0.00% | +31,075+70.1% | Added |
| Decheng Capital LLC | 547,609 | $4.46M | 1.13% | +497,609+995.2% | Added |
| Rhenman & Partners Asset Management AB | 67,250 | $4.43M | 0.56% | +23,750+54.6% | Added |
| Voloridge Investment Management, LLC | 66,422 | $4.37M | 0.02% | −11,814−15.1% | Reduced |
| Pier Capital, LLC | 63,634 | $4.19M | 0.64% | −4,342−6.4% | Reduced |
| Susquehanna International Group, LLP | 62,933 | $4.14M | 0.01% | +1,310+2.1% | Added |
| Swiss National Bank | 62,900 | $4.14M | 0.00% | 00.0% | Unchanged |
| Manufacturers Life Insurance Company, The | 60,155 | $3.96M | 0.00% | −26,673−30.7% | Reduced |
| Schroder Investment Management Group | 60,000 | $3.95M | 0.00% | +60,000 | New |
| Rafferty Asset Management, LLC | 56,371 | $3.71M | 0.01% | −2,136−3.7% | Reduced |
| Rhumbline Advisers | 55,140 | $3.63M | 0.00% | −8,611−13.5% | Reduced |
| Balyasny Asset Management LLC | 54,792 | $3.61M | 0.01% | +54,792 | New |
| Susquehanna Portfolio Strategies, LLC | 50,938 | $3.35M | 0.07% | +50,938 | New |
| Alliancebernstein L.P. | 48,155 | $3.17M | 0.00% | −3,140−6.1% | Reduced |
| Edmond de Rothschild Holding S.A. | 45,480 | $2.99M | 0.05% | 00.0% | Unchanged |
| Trexquant Investment LP | 43,183 | $2.84M | 0.03% | +43,183 | New |
| Nicholas Investment Partners, LP | 41,067 | $2.70M | 0.24% | +41,067 | New |
| HighVista Strategies LLC | 35,714 | $2.35M | 0.86% | −11,782−24.8% | Reduced |
| DekaBank Deutsche Girozentrale | 30,000 | $2.29M | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 34,812 | $2.29M | 0.00% | −6,795−16.3% | Reduced |
| 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 |
| Invesco Ltd. | 31,681 | $2.09M | 0.00% | +1,439+4.8% | Added |
| Wells Fargo & Company | 30,589 | $2.01M | 0.00% | +3,755+14.0% | Added |
| California State Teachers Retirement System | 30,087 | $1.98M | 0.00% | −249−0.8% | Reduced |
| Alps Advisors Inc | 29,660 | $1.95M | 0.01% | +29,660 | New |
| Federated Hermes, Inc. | 26,935 | $1.77M | 0.00% | −19,289−41.7% | Reduced |
| Caption Management, LLC | 26,756 | $1.76M | 0.16% | −40,313−60.1% | Reduced |
| HealthInvest Partners AB | 25,732 | $1.69M | 0.73% | −18,439−41.7% | Reduced |
| Knott David M Jr | 25,700 | $1.69M | 0.77% | +10,700+71.3% | Added |
| State of Wisconsin Investment Board | 25,550 | $1.68M | 0.00% | −12,553−32.9% | Reduced |
| Congress Asset Management Co | 25,209 | $1.66M | 0.01% | +102+0.4% | Added |
| Sector Gamma AS | 25,000 | $1.65M | 0.54% | −10,000−28.6% | Reduced |
| Harbor Capital Advisors, Inc. | 24,721 | $1.63M | 0.07% | +1,885+8.3% | Added |
| Tudor Investment Corp Et Al | 23,197 | $1.53M | 0.01% | +23,197 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 22,818 | $1.50M | 0.00% | −5,935−20.6% | Reduced |
| MetLife Investment Management | 21,949 | $1.45M | 0.01% | −3,661−14.3% | Reduced |
| Erste Asset Management GmbH | 21,000 | $1.37M | 0.01% | 00.0% | Unchanged |
| Dark Forest Capital Management LP | 20,033 | $1.32M | 0.05% | −51,037−71.8% | Reduced |
| New York State Common Retirement Fund | 17,815 | $1.17M | 0.00% | +4,492+33.7% | Added |
| Cinctive Capital Management LP | 17,539 | $1.15M | 0.06% | +17,539 | New |
| XTX Topco Ltd | 16,787 | $1.11M | 0.05% | +16,787 | New |
| Intech Investment Management LLC | 16,480 | $1.09M | 0.01% | −5,487−25.0% | Reduced |