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 |
|---|---|---|---|---|---|
| Police & Firemen's Retirement System of New Jersey | 9,074 | $591.6K | 0.00% | −570−5.9% | Reduced |
| China Universal Asset Management Co., Ltd. | 9,422 | $614.3K | 0.05% | −299−3.1% | Reduced |
| State of New Jersey Common Pension Fund D | 9,465 | $617.1K | 0.00% | +9,465 | New |
| LPL Financial LLC | 9,622 | $627.4K | 0.00% | −399−4.0% | Reduced |
| Gotham Asset Management, LLC | 9,842 | $641.7K | 0.00% | 00.0% | Unchanged |
| Franklin Resources Inc | 10,131 | $660.5K | 0.00% | −3,194−24.0% | Reduced |
| Martingale Asset Management L P | 10,618 | $692.3K | 0.02% | +103+1.0% | Added |
| State Board of Administration of Florida Retirement System | 10,850 | $707.4K | 0.00% | 00.0% | Unchanged |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 11,117 | $724.8K | 0.00% | 00.0% | Unchanged |
| Shay Capital LLC | 11,400 | $743.3K | 0.12% | +11,400 | New |
| New York State Common Retirement Fund | 11,623 | $757.8K | 0.00% | −8,722−42.9% | Reduced |
| SG Americas Securities, LLC | 12,041 | $785.0K | 0.00% | +3,926+48.4% | Added |
| HighTower Advisors, LLC | 12,558 | $818.8K | 0.00% | −20.0% | Reduced |
| Handelsbanken Fonder AB | 13,000 | $848.0K | 0.00% | +1,400+12.1% | Added |
| Jasper Ridge Partners, L.P. | 13,947 | $909.3K | 0.02% | −1,160−7.7% | Reduced |
| Trexquant Investment LP | 14,915 | $972.5K | 0.01% | +14,915 | New |
| Intech Investment Management LLC | 15,031 | $980.0K | 0.01% | +2,776+22.7% | Added |
| SEI Investments Co | 15,668 | $1.02M | 0.00% | +12,773+441.2% | Added |
| Norges Bank | 16,707 | $1.09M | 0.00% | +16,707 | New |
| Prudential Financial Inc | 16,720 | $1.09M | 0.00% | +6,950+71.1% | Added |
| STRS Ohio | 16,869 | $1.10M | 0.00% | −4,700−21.8% | Reduced |
| MetLife Investment Management | 19,344 | $1.26M | 0.01% | −679−3.4% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 20,002 | $1.30M | 0.00% | +1,600+8.7% | Added |
| First Trust Advisors LP | 20,896 | $1.36M | 0.00% | +20,896 | New |
| State of Wisconsin Investment Board | 20,918 | $1.36M | 0.00% | −1,320−5.9% | Reduced |
| Erste Asset Management GmbH | 21,000 | $1.37M | 0.01% | 00.0% | Unchanged |
| Harbor Capital Advisors, Inc. | 24,121 | $1.57M | 0.12% | +2,447+11.3% | Added |
| Y-Intercept (Hong Kong) Ltd | 24,538 | $1.60M | 0.04% | +9,030+58.2% | Added |
| D. E. Shaw & Co., Inc. | 25,165 | $1.64M | 0.00% | +25,165 | New |
| Knott David M Jr | 25,700 | $1.68M | 0.78% | 00.0% | Unchanged |
| Profund Advisors LLC | 25,740 | $1.68M | 0.05% | +14,955+138.7% | Added |
| Congress Asset Management Co | 25,999 | $1.70M | 0.01% | +697+2.8% | Added |
| California State Teachers Retirement System | 27,115 | $1.77M | 0.00% | −2,973−9.9% | Reduced |
| Legal & General Group Plc | 29,565 | $1.93M | 0.00% | +572+2.0% | Added |
| Soleus Capital Management, L.P. | 30,000 | $1.96M | 0.08% | −70,000−70.0% | Reduced |
| J. Goldman & Co LP | 31,219 | $2.04M | 0.08% | +31,219 | New |
| ADAR1 Capital Management, LLC | 31,484 | $2.05M | 0.15% | 00.0% | Unchanged |
| DekaBank Deutsche Girozentrale | 30,000 | $2.30M | 0.00% | 00.0% | Unchanged |
| Tema ETFs LLC | 39,314 | $2.56M | 0.20% | +2,505+6.8% | Added |
| NEOS Investment Management LLC | 39,904 | $2.60M | 0.02% | +3,095+8.4% | Added |
| Invesco Ltd. | 40,372 | $2.63M | 0.00% | +6,704+19.9% | Added |
| Alliancebernstein L.P. | 40,791 | $2.66M | 0.00% | −5,536−11.9% | Reduced |
| Schroder Investment Management Group | 42,478 | $2.70M | 0.00% | 00.0% | Unchanged |
| HealthInvest Partners AB | 41,717 | $2.72M | 0.87% | +15,985+62.1% | Added |
| Rhumbline Advisers | 44,352 | $2.89M | 0.00% | −8,076−15.4% | Reduced |
| Edmond de Rothschild Holding S.A. | 45,480 | $2.97M | 0.04% | 00.0% | Unchanged |
| Tudor Investment Corp Et Al | 46,029 | $3.00M | 0.02% | +46,029 | New |
| Squarepoint Ops LLC | 49,875 | $3.25M | 0.01% | +49,875 | New |
| Susquehanna Portfolio Strategies, LLC | 50,938 | $3.32M | 0.05% | 00.0% | Unchanged |
| Wells Fargo & Company | 54,260 | $3.54M | 0.00% | +19,834+57.6% | Added |
| Jane Street Group, LLC | 54,670 | $3.56M | 0.00% | −19,811−26.6% | Reduced |
| Swiss National Bank | 54,700 | $3.57M | 0.00% | +1,300+2.4% | Added |
| Victory Capital Management Inc | 54,872 | $3.58M | 0.00% | −117,177−68.1% | Reduced |
| Manufacturers Life Insurance Company, The | 57,251 | $3.67M | 0.00% | +3,398+6.3% | Added |
| Pier Capital, LLC | 59,063 | $3.85M | 0.61% | −1,152−1.9% | Reduced |
| Brevan Howard Capital Management LP | 60,178 | $3.92M | 0.08% | +56,373+1,481.6% | Added |
| Standard Life Aberdeen plc | 60,364 | $3.94M | 0.01% | +60,364 | New |
| Samsara BioCapital, LLC | 60,873 | $3.97M | 0.41% | −20,292−25.0% | Reduced |
| Ameriprise Financial Inc | 69,156 | $4.51M | 0.00% | −96,493−58.3% | Reduced |
| Rafferty Asset Management, LLC | 69,515 | $4.53M | 0.02% | +20,275+41.2% | Added |
| XTX Topco Ltd | 72,583 | $4.73M | 0.12% | +72,583 | New |
| HighVista Strategies LLC | 75,002 | $4.89M | 1.26% | −21,175−22.0% | Reduced |
| Nuveen, LLC | 81,944 | $5.34M | 0.00% | −1,483−1.8% | Reduced |
| Candriam Luxembourg S.C.A. | 96,420 | $6.29M | 0.03% | +96,420 | New |
| Qube Research & Technologies Ltd | 97,906 | $6.38M | 0.01% | +97,906 | New |
| Schonfeld Strategic Advisors LLC | 99,131 | $6.46M | 0.03% | −401,184−80.2% | Reduced |
| Logos Global Management LP | 115,000 | $7.50M | 0.50% | −50,000−30.3% | Reduced |
| Raymond James Financial Inc | 122,346 | $7.79M | 0.00% | −4,157−3.3% | Reduced |
| Bank of New York Mellon Corp | 123,171 | $8.03M | 0.00% | −8,353−6.4% | Reduced |
| Parkman Healthcare Partners LLC | 128,111 | $8.35M | 0.80% | −21,737−14.5% | Reduced |
| Clough Capital Partners L P | 129,780 | $8.46M | 0.76% | +129,780 | New |
| Russell Investments Group, Ltd. | 130,520 | $8.51M | 0.01% | −13,014−9.1% | Reduced |
| Rhenman & Partners Asset Management AB | 133,500 | $8.70M | 0.81% | +68,250+104.6% | Added |
| Catalio Capital Management, LP | 156,109 | $10.2M | 1.80% | +156,109 | New |
| Citigroup Inc | 156,519 | $10.2M | 0.01% | +63,674+68.6% | Added |
| UBS Asset Management Americas Inc | 161,035 | $10.5M | 0.00% | −7,596−4.5% | Reduced |
| Voya Investment Management LLC | 168,680 | $11.0M | 0.01% | −78,728−31.8% | Reduced |
| Rock Springs Capital Management LP | 169,859 | $11.1M | 0.57% | −9,123−5.1% | Reduced |
| Barclays PLC | 196,772 | $12.8M | 0.01% | +89,116+82.8% | Added |
| Integral Health Asset Management, LLC | 200,000 | $13.0M | 0.66% | +50,000+33.3% | Added |
| Wellington Management Group LLP | 214,776 | $14.0M | 0.00% | −17,423−7.5% | Reduced |
| ExodusPoint Capital Management, LP | 217,424 | $14.2M | 0.16% | +207,978+2,201.8% | Added |
| AJU IB Investment Co., Ltd. | 223,486 | $14.6M | 78.15% | −824,071−78.7% | Reduced |
| Deutsche Bank AG | 233,592 | $15.2M | 0.00% | −165,727−41.5% | Reduced |
| TD Asset Management Inc | 300,856 | $19.6M | 0.02% | +68,148+29.3% | Added |
| UBS Group AG | 316,612 | $20.6M | 0.00% | +127,236+67.2% | Added |
| Northern Trust Corp | 321,793 | $21.0M | 0.00% | −12,758−3.8% | Reduced |
| Fisher Asset Management, LLC | 322,855 | $21.1M | 0.01% | +322,855 | New |
| StemPoint Capital LP | 332,860 | $21.7M | 3.72% | +321,484+2,826.0% | Added |
| Hood River Capital Management LLC | 335,500 | $21.9M | 0.24% | +335,500 | New |
| Charles Schwab Investment Management Inc | 339,813 | $22.2M | 0.00% | +9,327+2.8% | Added |
| Pictet Asset Management Holding SA | 342,612 | $22.3M | 0.02% | −78,193−18.6% | Reduced |
| Hudson Bay Capital Management LP | 400,942 | $26.1M | 0.15% | +400,942 | New |
| American Century Companies Inc | 419,080 | $27.3M | 0.01% | +7,150+1.7% | Added |
| Bank of America Corp | 427,769 | $27.9M | 0.00% | +256,534+149.8% | Added |
| Lord, Abbett & Co. LLC | 449,634 | $29.3M | 0.09% | +25,634+6.0% | Added |
| Morgan Stanley | 518,404 | $33.8M | 0.00% | +85,522+19.8% | Added |
| Affinity Asset Advisors, LLC | 523,725 | $34.1M | 2.45% | +23,725+4.7% | Added |
| Bamco Inc | 609,697 | $39.8M | 0.11% | +59,461+10.8% | Added |
| Goldman Sachs Group Inc | 668,480 | $43.6M | 0.01% | +220,039+49.1% | Added |