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, Q4 2025
Institutional positions in Arcellx, Inc. as of Dec 31, 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
- 218
- +11 vs. Q3 2025
- Shares held
- 66.6M
- +3.56M (+5.6%) vs. Q3 2025
- Total value
- $4.34B
- −$833.5M (−16.1%) vs. Q3 2025
- New holders
- 42
- 72 more added
- Sold out
- 31
- 70 more reduced
2 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Arcellx, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| T. Rowe Price Investment Management, Inc. | 10,560,425 | $688.5M | 0.43% | +4,208,069+66.2% | Added |
| Gilead Sciences, Inc. | 6,720,803 | $438.2M | 22.64% | 00.0% | Unchanged |
| Paradigm Biocapital Advisors LP | 5,724,016 | $373.2M | 9.99% | +1,075,000+23.1% | Added |
| Vanguard Group Inc | 4,081,519 | $266.1M | 0.00% | +174,432+4.5% | Added |
| FMR LLC | 3,563,728 | $232.4M | 0.01% | −2,197,589−38.1% | Reduced |
| BlackRock, Inc. | 3,548,787 | $231.4M | 0.00% | +160,891+4.7% | Added |
| NEA Management Company, LLC | 3,045,262 | $198.6M | 10.12% | 00.0% | Unchanged |
| Vestal Point Capital, LP | 2,925,000 | $190.7M | 7.00% | +1,675,000+134.0% | Added |
| Sr One Capital Management, LP | 2,346,630 | $153.0M | 21.66% | 00.0% | Unchanged |
| State Street Corp | 1,998,503 | $130.3M | 0.00% | +472,476+31.0% | Added |
| Price T Rowe Associates Inc | 1,610,801 | $105.0M | 0.01% | +346,750+27.4% | Added |
| Citadel Advisors LLC | 1,500,223 | $97.8M | 0.07% | +478,770+46.9% | Added |
| Perceptive Advisors LLC | 1,466,071 | $95.6M | 1.75% | −1,002,282−40.6% | Reduced |
| JPMorgan Chase & Co | 1,454,477 | $94.8M | 0.01% | +571,974+64.8% | Added |
| Ra Capital Management, L.P. | 1,267,156 | $82.6M | 0.85% | −1,769,371−58.3% | Reduced |
| Geode Capital Management, LLC | 958,057 | $62.5M | 0.00% | +31,753+3.4% | Added |
| Janus Henderson Group PLC | 919,578 | $60.0M | 0.03% | −94,343−9.3% | Reduced |
| Woodline Partners LP | 737,824 | $48.1M | 0.19% | +496,435+205.7% | Added |
| Goldman Sachs Group Inc | 668,480 | $43.6M | 0.01% | +220,039+49.1% | Added |
| Bamco Inc | 609,697 | $39.8M | 0.11% | +59,461+10.8% | Added |
| Affinity Asset Advisors, LLC | 523,725 | $34.1M | 2.45% | +23,725+4.7% | Added |
| Morgan Stanley | 518,404 | $33.8M | 0.00% | +85,522+19.8% | Added |
| Lord, Abbett & Co. LLC | 449,634 | $29.3M | 0.09% | +25,634+6.0% | Added |
| Bank of America Corp | 427,769 | $27.9M | 0.00% | +256,534+149.8% | Added |
| American Century Companies Inc | 419,080 | $27.3M | 0.01% | +7,150+1.7% | Added |
| Hudson Bay Capital Management LP | 400,942 | $26.1M | 0.15% | +400,942 | New |
| Pictet Asset Management Holding SA | 342,612 | $22.3M | 0.02% | −78,193−18.6% | Reduced |
| Charles Schwab Investment Management Inc | 339,813 | $22.2M | 0.00% | +9,327+2.8% | Added |
| Hood River Capital Management LLC | 335,500 | $21.9M | 0.24% | +335,500 | New |
| StemPoint Capital LP | 332,860 | $21.7M | 3.72% | +321,484+2,826.0% | Added |
| Fisher Asset Management, LLC | 322,855 | $21.1M | 0.01% | +322,855 | New |
| Northern Trust Corp | 321,793 | $21.0M | 0.00% | −12,758−3.8% | Reduced |
| UBS Group AG | 316,612 | $20.6M | 0.00% | +127,236+67.2% | Added |
| TD Asset Management Inc | 300,856 | $19.6M | 0.02% | +68,148+29.3% | Added |
| Deutsche Bank AG | 233,592 | $15.2M | 0.00% | −165,727−41.5% | Reduced |
| AJU IB Investment Co., Ltd. | 223,486 | $14.6M | 78.15% | −824,071−78.7% | Reduced |
| ExodusPoint Capital Management, LP | 217,424 | $14.2M | 0.16% | +207,978+2,201.8% | Added |
| Wellington Management Group LLP | 214,776 | $14.0M | 0.00% | −17,423−7.5% | Reduced |
| Integral Health Asset Management, LLC | 200,000 | $13.0M | 0.66% | +50,000+33.3% | Added |
| Barclays PLC | 196,772 | $12.8M | 0.01% | +89,116+82.8% | Added |
| Rock Springs Capital Management LP | 169,859 | $11.1M | 0.57% | −9,123−5.1% | Reduced |
| Voya Investment Management LLC | 168,680 | $11.0M | 0.01% | −78,728−31.8% | Reduced |
| UBS Asset Management Americas Inc | 161,035 | $10.5M | 0.00% | −7,596−4.5% | Reduced |
| Citigroup Inc | 156,519 | $10.2M | 0.01% | +63,674+68.6% | Added |
| Catalio Capital Management, LP | 156,109 | $10.2M | 1.80% | +156,109 | New |
| Rhenman & Partners Asset Management AB | 133,500 | $8.70M | 0.81% | +68,250+104.6% | Added |
| Russell Investments Group, Ltd. | 130,520 | $8.51M | 0.01% | −13,014−9.1% | Reduced |
| Clough Capital Partners L P | 129,780 | $8.46M | 0.76% | +129,780 | New |
| Parkman Healthcare Partners LLC | 128,111 | $8.35M | 0.80% | −21,737−14.5% | Reduced |
| Bank of New York Mellon Corp | 123,171 | $8.03M | 0.00% | −8,353−6.4% | Reduced |
| Raymond James Financial Inc | 122,346 | $7.79M | 0.00% | −4,157−3.3% | Reduced |
| Logos Global Management LP | 115,000 | $7.50M | 0.50% | −50,000−30.3% | Reduced |
| Schonfeld Strategic Advisors LLC | 99,131 | $6.46M | 0.03% | −401,184−80.2% | Reduced |
| Qube Research & Technologies Ltd | 97,906 | $6.38M | 0.01% | +97,906 | New |
| Candriam Luxembourg S.C.A. | 96,420 | $6.29M | 0.03% | +96,420 | New |
| Nuveen, LLC | 81,944 | $5.34M | 0.00% | −1,483−1.8% | Reduced |
| HighVista Strategies LLC | 75,002 | $4.89M | 1.26% | −21,175−22.0% | Reduced |
| XTX Topco Ltd | 72,583 | $4.73M | 0.12% | +72,583 | New |
| Rafferty Asset Management, LLC | 69,515 | $4.53M | 0.02% | +20,275+41.2% | Added |
| Ameriprise Financial Inc | 69,156 | $4.51M | 0.00% | −96,493−58.3% | Reduced |
| Samsara BioCapital, LLC | 60,873 | $3.97M | 0.41% | −20,292−25.0% | Reduced |
| Standard Life Aberdeen plc | 60,364 | $3.94M | 0.01% | +60,364 | New |
| Brevan Howard Capital Management LP | 60,178 | $3.92M | 0.08% | +56,373+1,481.6% | Added |
| Pier Capital, LLC | 59,063 | $3.85M | 0.61% | −1,152−1.9% | Reduced |
| Manufacturers Life Insurance Company, The | 57,251 | $3.67M | 0.00% | +3,398+6.3% | Added |
| Victory Capital Management Inc | 54,872 | $3.58M | 0.00% | −117,177−68.1% | Reduced |
| Swiss National Bank | 54,700 | $3.57M | 0.00% | +1,300+2.4% | Added |
| Jane Street Group, LLC | 54,670 | $3.56M | 0.00% | −19,811−26.6% | Reduced |
| Wells Fargo & Company | 54,260 | $3.54M | 0.00% | +19,834+57.6% | Added |
| Susquehanna Portfolio Strategies, LLC | 50,938 | $3.32M | 0.05% | 00.0% | Unchanged |
| Squarepoint Ops LLC | 49,875 | $3.25M | 0.01% | +49,875 | New |
| Tudor Investment Corp Et Al | 46,029 | $3.00M | 0.02% | +46,029 | New |
| Edmond de Rothschild Holding S.A. | 45,480 | $2.97M | 0.04% | 00.0% | Unchanged |
| Rhumbline Advisers | 44,352 | $2.89M | 0.00% | −8,076−15.4% | Reduced |
| HealthInvest Partners AB | 41,717 | $2.72M | 0.87% | +15,985+62.1% | Added |
| Schroder Investment Management Group | 42,478 | $2.70M | 0.00% | 00.0% | Unchanged |
| Alliancebernstein L.P. | 40,791 | $2.66M | 0.00% | −5,536−11.9% | Reduced |
| Invesco Ltd. | 40,372 | $2.63M | 0.00% | +6,704+19.9% | Added |
| NEOS Investment Management LLC | 39,904 | $2.60M | 0.02% | +3,095+8.4% | Added |
| Tema ETFs LLC | 39,314 | $2.56M | 0.20% | +2,505+6.8% | Added |
| DekaBank Deutsche Girozentrale | 30,000 | $2.30M | 0.00% | 00.0% | Unchanged |
| ADAR1 Capital Management, LLC | 31,484 | $2.05M | 0.15% | 00.0% | Unchanged |
| J. Goldman & Co LP | 31,219 | $2.04M | 0.08% | +31,219 | New |
| Soleus Capital Management, L.P. | 30,000 | $1.96M | 0.08% | −70,000−70.0% | Reduced |
| Legal & General Group Plc | 29,565 | $1.93M | 0.00% | +572+2.0% | Added |
| California State Teachers Retirement System | 27,115 | $1.77M | 0.00% | −2,973−9.9% | Reduced |
| Congress Asset Management Co | 25,999 | $1.70M | 0.01% | +697+2.8% | Added |
| Profund Advisors LLC | 25,740 | $1.68M | 0.05% | +14,955+138.7% | Added |
| Knott David M Jr | 25,700 | $1.68M | 0.78% | 00.0% | Unchanged |
| D. E. Shaw & Co., Inc. | 25,165 | $1.64M | 0.00% | +25,165 | New |
| Y-Intercept (Hong Kong) Ltd | 24,538 | $1.60M | 0.04% | +9,030+58.2% | Added |
| Harbor Capital Advisors, Inc. | 24,121 | $1.57M | 0.12% | +2,447+11.3% | Added |
| Erste Asset Management GmbH | 21,000 | $1.37M | 0.01% | 00.0% | Unchanged |
| State of Wisconsin Investment Board | 20,918 | $1.36M | 0.00% | −1,320−5.9% | Reduced |
| First Trust Advisors LP | 20,896 | $1.36M | 0.00% | +20,896 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 20,002 | $1.30M | 0.00% | +1,600+8.7% | Added |
| MetLife Investment Management | 19,344 | $1.26M | 0.01% | −679−3.4% | Reduced |
| STRS Ohio | 16,869 | $1.10M | 0.00% | −4,700−21.8% | Reduced |
| Prudential Financial Inc | 16,720 | $1.09M | 0.00% | +6,950+71.1% | Added |
| Norges Bank | 16,707 | $1.09M | 0.00% | +16,707 | New |