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, Q3 2025
Institutional positions in Arcellx, Inc. as of Sep 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
- 209
- +9 vs. Q2 2025
- Shares held
- 63.1M
- +1.70M (+2.8%) vs. Q2 2025
- Total value
- $5.18B
- +$1.17B (+29.1%) vs. Q2 2025
- New holders
- 30
- 59 more added
- Sold out
- 21
- 81 more reduced
3 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Arcellx, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Gilead Sciences, Inc. | 6,720,803 | $551.8M | 30.80% | 00.0% | Unchanged |
| T. Rowe Price Investment Management, Inc. | 6,352,356 | $521.5M | 0.32% | +4,408,630+226.8% | Added |
| FMR LLC | 5,761,317 | $473.0M | 0.02% | −210,834−3.5% | Reduced |
| Paradigm Biocapital Advisors LP | 4,649,016 | $381.7M | 11.29% | 00.0% | Unchanged |
| Vanguard Group Inc | 3,907,087 | $320.8M | 0.00% | −37,798−1.0% | Reduced |
| BlackRock, Inc. | 3,387,896 | $278.1M | 0.00% | −80,288−2.3% | Reduced |
| NEA Management Company, LLC | 3,045,262 | $250.0M | 13.72% | −700,000−18.7% | Reduced |
| Ra Capital Management, L.P. | 3,036,527 | $249.3M | 3.07% | 00.0% | Unchanged |
| Perceptive Advisors LLC | 2,468,353 | $202.7M | 5.86% | −9,647−0.4% | Reduced |
| Sr One Capital Management, LP | 2,346,630 | $192.7M | 27.86% | 00.0% | Unchanged |
| State Street Corp | 1,526,027 | $125.3M | 0.00% | −66,286−4.2% | Reduced |
| Price T Rowe Associates Inc | 1,264,051 | $103.8M | 0.01% | −174,722−12.1% | Reduced |
| Vestal Point Capital, LP | 1,250,000 | $102.6M | 4.66% | −1,500,000−54.5% | Reduced |
| AJU IB Investment Co., Ltd. | 1,047,557 | $86.0M | 74.71% | 00.0% | Unchanged |
| Citadel Advisors LLC | 1,021,453 | $83.9M | 0.07% | +823,090+414.9% | Added |
| Janus Henderson Group PLC | 1,013,921 | $83.2M | 0.04% | −9,661−0.9% | Reduced |
| Geode Capital Management, LLC | 926,304 | $76.1M | 0.00% | −35,474−3.7% | Reduced |
| JPMorgan Chase & Co | 882,503 | $72.5M | 0.00% | −94,465−9.7% | Reduced |
| Capital World Investors | 783,011 | $64.3M | 0.01% | 00.0% | Unchanged |
| Cormorant Asset Management, LP | 775,000 | $63.6M | 4.39% | −25,000−3.1% | Reduced |
| Bamco Inc | 550,236 | $45.2M | 0.12% | +32,227+6.2% | Added |
| Schonfeld Strategic Advisors LLC | 500,315 | $41.1M | 0.29% | +153,587+44.3% | Added |
| Affinity Asset Advisors, LLC | 500,000 | $41.0M | 3.82% | +5,000+1.0% | Added |
| Goldman Sachs Group Inc | 448,441 | $36.8M | 0.01% | −62,164−12.2% | Reduced |
| Morgan Stanley | 432,882 | $35.5M | 0.00% | −84,631−16.4% | Reduced |
| Lord, Abbett & Co. LLC | 424,000 | $34.8M | 0.10% | +86,424+25.6% | Added |
| Pictet Asset Management Holding SA | 420,805 | $34.5M | 0.03% | +37,669+9.8% | Added |
| American Century Companies Inc | 411,930 | $33.8M | 0.02% | −19,536−4.5% | Reduced |
| Deutsche Bank AG | 399,319 | $32.8M | 0.01% | +69,955+21.2% | Added |
| Northern Trust Corp | 334,551 | $27.5M | 0.00% | −11,424−3.3% | Reduced |
| Charles Schwab Investment Management Inc | 330,486 | $27.1M | 0.00% | +11,214+3.5% | Added |
| First Turn Management, LLC | 313,733 | $25.8M | 3.87% | +98,510+45.8% | Added |
| Voya Investment Management LLC | 247,408 | $20.3M | 0.02% | −28,268−10.3% | Reduced |
| Woodline Partners LP | 241,389 | $19.8M | 0.09% | 00.0% | Unchanged |
| TD Asset Management Inc | 232,708 | $19.1M | 0.02% | +129,248+124.9% | Added |
| Wellington Management Group LLP | 232,199 | $19.1M | 0.00% | −9,210−3.8% | Reduced |
| UBS Group AG | 189,376 | $15.5M | 0.00% | +40,459+27.2% | Added |
| Rock Springs Capital Management LP | 178,982 | $14.7M | 0.86% | −7,332−3.9% | Reduced |
| Victory Capital Management Inc | 172,049 | $14.1M | 0.01% | −27,692−13.9% | Reduced |
| Bank of America Corp | 171,235 | $14.1M | 0.00% | −91,120−34.7% | Reduced |
| UBS Asset Management Americas Inc | 168,631 | $13.8M | 0.00% | −98,480−36.9% | Reduced |
| Baker Bros. Advisors LP | 166,825 | $13.7M | 0.10% | 00.0% | Unchanged |
| Ameriprise Financial Inc | 165,649 | $13.6M | 0.00% | +44,131+36.3% | Added |
| Logos Global Management LP | 165,000 | $13.5M | 1.34% | +165,000 | New |
| Integral Health Asset Management, LLC | 150,000 | $12.3M | 0.90% | +150,000 | New |
| Parkman Healthcare Partners LLC | 149,848 | $12.3M | 1.35% | −24,428−14.0% | Reduced |
| Russell Investments Group, Ltd. | 143,534 | $11.8M | 0.01% | +15,469+12.1% | Added |
| Bank of New York Mellon Corp | 131,524 | $10.8M | 0.00% | −545−0.4% | Reduced |
| Raymond James Financial Inc | 126,503 | $10.4M | 0.00% | −7,544−5.6% | Reduced |
| Barclays PLC | 107,656 | $8.84M | 0.00% | −31,722−22.8% | Reduced |
| Soleus Capital Management, L.P. | 100,000 | $8.21M | 0.44% | −23,031−18.7% | Reduced |
| HighVista Strategies LLC | 96,177 | $7.90M | 1.94% | +60,463+169.3% | Added |
| Citigroup Inc | 92,845 | $7.62M | 0.01% | −13,427−12.6% | Reduced |
| Dimensional Fund Advisors LP | 83,524 | $6.86M | 0.00% | −259,602−75.7% | Reduced |
| Nuveen, LLC | 83,427 | $6.85M | 0.00% | −3,991−4.6% | Reduced |
| Samsara BioCapital, LLC | 81,165 | $6.66M | 0.87% | −20,292−20.0% | Reduced |
| Monaco Asset Management SAM | 78,589 | $6.45M | 2.40% | +78,589 | New |
| Jane Street Group, LLC | 74,481 | $6.11M | 0.01% | +74,481 | New |
| BNP Paribas Arbitrage, SA | 68,833 | $5.65M | 0.00% | −6,596−8.7% | Reduced |
| Rhenman & Partners Asset Management AB | 65,250 | $5.36M | 0.59% | −2,000−3.0% | Reduced |
| Royal Bank of Canada | 62,898 | $5.16M | 0.00% | +61,478+4,329.4% | Added |
| Pier Capital, LLC | 60,215 | $4.94M | 0.77% | −3,419−5.4% | Reduced |
| Nicholas Investment Partners, LP | 58,894 | $4.84M | 0.37% | +17,827+43.4% | Added |
| Manufacturers Life Insurance Company, The | 53,853 | $4.42M | 0.00% | −6,302−10.5% | Reduced |
| Swiss National Bank | 53,400 | $4.38M | 0.00% | −9,500−15.1% | Reduced |
| Rhumbline Advisers | 52,428 | $4.30M | 0.00% | −2,712−4.9% | Reduced |
| Pathway Capital Management, LP | 51,051 | $4.19M | 20.60% | +51,051 | New |
| Susquehanna Portfolio Strategies, LLC | 50,938 | $4.18M | 0.07% | 00.0% | Unchanged |
| Jain Global LLC | 50,011 | $4.11M | 0.05% | +35,730+250.2% | Added |
| Rafferty Asset Management, LLC | 49,240 | $4.04M | 0.01% | −7,131−12.7% | Reduced |
| Balyasny Asset Management LLC | 48,691 | $4.00M | 0.01% | −6,101−11.1% | Reduced |
| Alliancebernstein L.P. | 46,327 | $3.80M | 0.00% | −1,828−3.8% | Reduced |
| Edmond de Rothschild Holding S.A. | 45,480 | $3.73M | 0.06% | 00.0% | Unchanged |
| Schroder Investment Management Group | 42,478 | $3.36M | 0.00% | −17,522−29.2% | Reduced |
| Millennium Management LLC | 40,341 | $3.31M | 0.00% | −54,221−57.3% | Reduced |
| NEOS Investment Management LLC | 36,809 | $3.02M | 0.02% | +2,940+8.7% | Added |
| Tema ETFs LLC | 36,809 | $3.02M | 0.25% | +2,940+8.7% | Added |
| Dark Forest Capital Management LP | 36,794 | $3.02M | 0.11% | +16,761+83.7% | Added |
| Wells Fargo & Company | 34,426 | $2.83M | 0.00% | +3,837+12.5% | Added |
| Invesco Ltd. | 33,668 | $2.76M | 0.00% | +1,987+6.3% | Added |
| Sector Gamma AS | 32,009 | $2.63M | 0.65% | +7,009+28.0% | Added |
| AQR Capital Management LLC | 31,715 | $2.60M | 0.00% | +23,158+270.6% | Added |
| ADAR1 Capital Management, LLC | 31,484 | $2.58M | 0.26% | +17,522+125.5% | Added |
| California State Teachers Retirement System | 30,088 | $2.47M | 0.00% | +10.0% | Added |
| Legal & General Group Plc | 28,993 | $2.38M | 0.00% | −5,819−16.7% | Reduced |
| DekaBank Deutsche Girozentrale | 30,000 | $2.27M | 0.00% | 00.0% | Unchanged |
| HealthInvest Partners AB | 25,732 | $2.24M | 0.83% | 00.0% | Unchanged |
| Blue Owl Capital Holdings LP | 26,823 | $2.20M | 0.68% | +26,823 | New |
| Knott David M Jr | 25,700 | $2.11M | 0.88% | 00.0% | Unchanged |
| SummitTX Capital, L.P. | 25,448 | $2.09M | 0.09% | +25,448 | New |
| Congress Asset Management Co | 25,302 | $2.08M | 0.01% | +93+0.4% | Added |
| Alps Advisors Inc | 25,188 | $2.07M | 0.01% | −4,472−15.1% | Reduced |
| State of Wisconsin Investment Board | 22,238 | $1.83M | 0.00% | −3,312−13.0% | Reduced |
| Harbor Capital Advisors, Inc. | 21,674 | $1.78M | 0.14% | −3,047−12.3% | Reduced |
| STRS Ohio | 21,569 | $1.77M | 0.01% | +7,269+50.8% | Added |
| New York State Common Retirement Fund | 20,345 | $1.67M | 0.00% | +2,530+14.2% | Added |
| Erste Asset Management GmbH | 21,000 | $1.66M | 0.02% | 00.0% | Unchanged |
| MetLife Investment Management | 20,023 | $1.64M | 0.01% | −1,926−8.8% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 18,402 | $1.50M | 0.00% | −4,416−19.4% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 15,508 | $1.27M | 0.03% | +15,508 | New |