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, Q1 2025
Institutional positions in Arcellx, Inc. as of Mar 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
- 198
- −12 vs. Q4 2024
- Shares held
- 61.6M
- +2.52M (+4.3%) vs. Q4 2024
- Total value
- $4.04B
- −$486.0M (−10.7%) vs. Q4 2024
- New holders
- 25
- 74 more added
- Sold out
- 37
- 70 more reduced
1 institution that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: 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, Q1 2025
Shares, value and share of portfolio for each institution holding Arcellx, Inc.; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Marshall Wace, LLP | 15,400 | $1.01M | 0.00% | +15,400 | New |
| Creative Planning | 15,415 | $1.01M | 0.00% | +11,222+267.6% | Added |
| PFM Health Sciences, LP | 15,488 | $1.02M | 0.08% | −41,115−72.6% | Reduced |
| AQR Capital Management LLC | 17,140 | $1.12M | 0.00% | −3,108−15.3% | Reduced |
| Wellington Management Group LLP | 18,439 | $1.21M | 0.00% | −1,254−6.4% | Reduced |
| Corebridge Financial, Inc. | 21,428 | $1.41M | 0.01% | −20.0% | Reduced |
| Erste Asset Management GmbH | 21,000 | $1.43M | 0.02% | 00.0% | Unchanged |
| Intech Investment Management LLC | 21,967 | $1.44M | 0.01% | +4,760+27.7% | Added |
| Harbor Capital Advisors, Inc. | 22,836 | $1.50M | 0.07% | −629−2.7% | Reduced |
| Congress Asset Management Co | 25,107 | $1.65M | 0.01% | −214−0.8% | Reduced |
| MetLife Investment Management | 25,610 | $1.68M | 0.01% | −448−1.7% | Reduced |
| Wells Fargo & Company | 26,834 | $1.76M | 0.00% | +196+0.7% | Added |
| Empowered Funds, LLC | 26,954 | $1.77M | 0.03% | +26,954 | New |
| Franklin Resources Inc | 27,007 | $1.77M | 0.00% | −25,290−48.4% | Reduced |
| NEOS Investment Management LLC | 28,450 | $1.87M | 0.04% | +20,982+281.0% | Added |
| Tema ETFs LLC | 28,450 | $1.87M | 0.56% | +20,982+281.0% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 28,753 | $1.89M | 0.00% | +1,390+5.1% | Added |
| Invesco Ltd. | 30,242 | $1.98M | 0.00% | +3,692+13.9% | Added |
| California State Teachers Retirement System | 30,336 | $1.99M | 0.00% | −625−2.0% | Reduced |
| DekaBank Deutsche Girozentrale | 30,000 | $2.12M | 0.00% | 00.0% | Unchanged |
| Sector Gamma AS | 35,000 | $2.30M | 0.74% | +35,000 | New |
| State of Wisconsin Investment Board | 38,103 | $2.50M | 0.01% | +3,771+11.0% | Added |
| Legal & General Group Plc | 41,607 | $2.73M | 0.00% | −1,426−3.3% | Reduced |
| Rhenman & Partners Asset Management AB | 43,500 | $2.85M | 0.33% | 00.0% | Unchanged |
| Allostery Investments LP | 44,000 | $2.89M | 4.16% | +9,000+25.7% | Added |
| HealthInvest Partners AB | 44,171 | $2.90M | 1.28% | +2,100+5.0% | Added |
| BNP Paribas Arbitrage, SA | 44,354 | $2.91M | 0.00% | +24,389+122.2% | Added |
| Great Point Partners LLC | 45,000 | $2.95M | 1.60% | +45,000 | New |
| Readystate Asset Management LP | 45,058 | $2.96M | 0.15% | +45,058 | New |
| Edmond de Rothschild Holding S.A. | 45,480 | $2.98M | 0.05% | 00.0% | Unchanged |
| Federated Hermes, Inc. | 46,224 | $3.03M | 0.01% | −109,870−70.4% | Reduced |
| HighVista Strategies LLC | 47,496 | $3.12M | 1.20% | +3,692+8.4% | Added |
| Decheng Capital LLC | 50,000 | $3.28M | 0.92% | −34,377−40.7% | Reduced |
| Millennium Management LLC | 51,056 | $3.35M | 0.00% | +28,686+128.2% | Added |
| Alliancebernstein L.P. | 51,295 | $3.36M | 0.00% | +45+0.1% | Added |
| American Century Companies Inc | 54,321 | $3.56M | 0.00% | +24,875+84.5% | Added |
| Ameriprise Financial Inc | 55,437 | $3.64M | 0.00% | +45,266+445.0% | Added |
| Rafferty Asset Management, LLC | 58,507 | $3.84M | 0.02% | −12,530−17.6% | Reduced |
| Susquehanna International Group, LLP | 61,623 | $4.04M | 0.01% | +19,083+44.9% | Added |
| Swiss National Bank | 62,900 | $4.13M | 0.00% | −500−0.8% | Reduced |
| Rhumbline Advisers | 63,751 | $4.18M | 0.00% | +3,848+6.4% | Added |
| Caption Management, LLC | 67,069 | $4.40M | 0.20% | +67,069 | New |
| First Trust Advisors LP | 67,201 | $4.41M | 0.00% | −66,996−49.9% | Reduced |
| Parkman Healthcare Partners LLC | 67,390 | $4.42M | 0.52% | +22,898+51.5% | Added |
| Pier Capital, LLC | 67,976 | $4.46M | 0.75% | +67,976 | New |
| Renaissance Technologies LLC | 68,000 | $4.46M | 0.01% | +18,900+38.5% | Added |
| Candriam Luxembourg S.C.A. | 70,538 | $4.63M | 0.03% | −124,458−63.8% | Reduced |
| Dark Forest Capital Management LP | 71,070 | $4.66M | 0.21% | +55,003+342.3% | Added |
| Barclays PLC | 77,639 | $5.09M | 0.00% | −13,956−15.2% | Reduced |
| Voloridge Investment Management, LLC | 78,236 | $5.13M | 0.02% | −99,962−56.1% | Reduced |
| Citigroup Inc | 80,079 | $5.25M | 0.00% | +10,671+15.4% | Added |
| Manufacturers Life Insurance Company, The | 86,828 | $5.70M | 0.01% | −11,486−11.7% | Reduced |
| Nuveen, LLC | 111,786 | $7.33M | 0.00% | +111,786 | New |
| Raymond James Financial Inc | 128,778 | $8.45M | 0.00% | −1,823−1.4% | Reduced |
| Samsara BioCapital, LLC | 135,276 | $8.87M | 1.58% | −118,365−46.7% | Reduced |
| Bank of New York Mellon Corp | 143,617 | $9.42M | 0.00% | −792−0.5% | Reduced |
| Russell Investments Group, Ltd. | 152,023 | $9.97M | 0.01% | −117,363−43.6% | Reduced |
| Soleus Capital Management, L.P. | 153,031 | $10.0M | 0.79% | +32,000+26.4% | Added |
| Bank of America Corp | 163,670 | $10.7M | 0.00% | +15,563+10.5% | Added |
| Woodline Partners LP | 165,305 | $10.8M | 0.07% | +39,656+31.6% | Added |
| TD Asset Management Inc | 168,320 | $11.0M | 0.01% | +4,402+2.7% | Added |
| Qube Research & Technologies Ltd | 173,059 | $11.4M | 0.02% | +18,659+12.1% | Added |
| Goldman Sachs Group Inc | 174,788 | $11.5M | 0.00% | −115,223−39.7% | Reduced |
| Victory Capital Management Inc | 178,110 | $11.7M | 0.01% | −6,073−3.3% | Reduced |
| UBS Group AG | 209,572 | $13.7M | 0.00% | +2,033+1.0% | Added |
| Artia Global Partners LP | 229,085 | $15.0M | 4.41% | −700−0.3% | Reduced |
| Schonfeld Strategic Advisors LLC | 233,522 | $15.3M | 0.10% | +200,785+613.3% | Added |
| UBS Asset Management Americas Inc | 264,756 | $17.4M | 0.00% | −2,628−1.0% | Reduced |
| StemPoint Capital LP | 273,774 | $18.0M | 5.74% | +273,774 | New |
| Voya Investment Management LLC | 277,102 | $18.2M | 0.02% | +140,899+103.4% | Added |
| Charles Schwab Investment Management Inc | 336,949 | $22.1M | 0.00% | −6,136−1.8% | Reduced |
| Deutsche Bank AG | 343,694 | $22.5M | 0.01% | −835−0.2% | Reduced |
| Northern Trust Corp | 403,841 | $26.5M | 0.00% | −6,892−1.7% | Reduced |
| Morgan Stanley | 462,333 | $30.3M | 0.00% | −155,784−25.2% | Reduced |
| Bamco Inc | 467,261 | $30.7M | 0.09% | +118,928+34.1% | Added |
| Dimensional Fund Advisors LP | 486,269 | $31.9M | 0.01% | +181,181+59.4% | Added |
| Affinity Asset Advisors, LLC | 530,000 | $34.8M | 5.44% | +105,000+24.7% | Added |
| Lord, Abbett & Co. LLC | 664,526 | $43.6M | 0.16% | −310,306−31.8% | Reduced |
| JPMorgan Chase & Co | 683,581 | $44.8M | 0.00% | +459,125+204.6% | Added |
| Capital World Investors | 709,374 | $46.5M | 0.01% | +456,496+180.5% | Added |
| Citadel Advisors LLC | 726,127 | $47.6M | 0.05% | +700,901+2,778.5% | Added |
| Geode Capital Management, LLC | 1,020,540 | $67.0M | 0.01% | +41,514+4.2% | Added |
| AJU IB Investment Co., Ltd. | 1,047,557 | $68.7M | 81.77% | 00.0% | Unchanged |
| Cormorant Asset Management, LP | 1,050,000 | $68.9M | 5.22% | −250,000−19.2% | Reduced |
| Janus Henderson Group PLC | 1,510,494 | $102.6M | 0.06% | −46,598−3.0% | Reduced |
| T. Rowe Price Investment Management, Inc. | 1,665,138 | $109.2M | 0.07% | +959,216+135.9% | Added |
| State Street Corp | 1,666,451 | $109.3M | 0.00% | −108,921−6.1% | Reduced |
| Price T Rowe Associates Inc | 1,839,624 | $120.7M | 0.01% | −281,698−13.3% | Reduced |
| Sr One Capital Management, LP | 2,346,630 | $153.9M | 39.54% | 00.0% | Unchanged |
| Vestal Point Capital, LP | 2,387,720 | $156.6M | 11.19% | +1,912,720+402.7% | Added |
| Perceptive Advisors LLC | 2,926,478 | $192.0M | 6.81% | −552,410−15.9% | Reduced |
| Ra Capital Management, L.P. | 3,036,527 | $199.2M | 3.33% | +249,200+8.9% | Added |
| NEA Management Company, LLC | 3,745,262 | $245.7M | 18.92% | 00.0% | Unchanged |
| BlackRock, Inc. | 3,967,569 | $260.3M | 0.01% | +113,548+2.9% | Added |
| Vanguard Group Inc | 3,985,156 | $261.4M | 0.00% | +655,064+19.7% | Added |
| Paradigm Biocapital Advisors LP | 4,492,032 | $294.7M | 13.56% | +120,431+2.8% | Added |
| FMR LLC | 6,303,679 | $413.5M | 0.03% | −1,652,954−20.8% | Reduced |
| Gilead Sciences, Inc. | 6,720,803 | $440.9M | 37.32% | 00.0% | Unchanged |
| First Turn Management, LLC | 0 | $0 | 0.00% | −152,356−100.0% | Sold out |
| Integral Health Asset Management, LLC | 0 | $0 | 0.00% | −100,000−100.0% | Sold out |