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 2026
Institutional positions in Arcellx, Inc. as of Jun 30, 2026. 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
ACLX is no longer listed, and 13F filings after Q1 2026 list far fewer holders. See Q1 2026
- Institutional holders
- 2
- −234 vs. Q1 2026
- Shares held
- 30.0K
- −56.8M (−99.9%) vs. Q1 2026
- Total value
- $3.43M
- −$6.49B (−99.9%) vs. Q1 2026
- New holders
- 0
- 1 more added
- Sold out
- 234
- 0 more reduced
4 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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 2026
Shares, value and share of portfolio for each institution holding Arcellx, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| DekaBank Deutsche Girozentrale | 30,000 | $3.43M | 0.01% | 00.0% | Unchanged |
| IFP Advisors, Inc | 13 | $1.50K | 0.00% | +1+8.3% | Added |
| Gilead Sciences, Inc. | 0 | $0 | 0.00% | −6,720,803−100.0% | Sold out |
| Paradigm Biocapital Advisors LP | 0 | $0 | 0.00% | −5,774,016−100.0% | Sold out |
| BlackRock, Inc. | 0 | $0 | 0.00% | −3,945,238−100.0% | Sold out |
| NEA Management Company, LLC | 0 | $0 | 0.00% | −3,045,262−100.0% | Sold out |
| Pentwater Capital Management LP | 0 | $0 | 0.00% | −2,870,000−100.0% | Sold out |
| Vanguard Capital Management LLC | 0 | $0 | 0.00% | −2,425,218−100.0% | Sold out |
| Vanguard Portfolio Management LLC | 0 | $0 | 0.00% | −2,424,818−100.0% | Sold out |
| Sr One Capital Management, LP | 0 | $0 | 0.00% | −2,346,630−100.0% | Sold out |
| FIL Ltd | 0 | $0 | 0.00% | −2,339,192−100.0% | Sold out |
| HBK Investments L P | 0 | $0 | 0.00% | −2,278,517−100.0% | Sold out |
| T. Rowe Price Investment Management, Inc. | 0 | $0 | 0.00% | −2,255,878−100.0% | Sold out |
| State Street Corp | 0 | $0 | 0.00% | −1,675,895−100.0% | Sold out |
| Glazer Capital, LLC | 0 | $0 | 0.00% | −1,507,128−100.0% | Sold out |
| Goldman Sachs Group Inc | 0 | $0 | 0.00% | −1,312,155−100.0% | Sold out |
| Geode Capital Management, LLC | 0 | $0 | 0.00% | −1,028,666−100.0% | Sold out |
| Morgan Stanley | 0 | $0 | 0.00% | −925,813−100.0% | Sold out |
| JPMorgan Chase & Co | 0 | $0 | 0.00% | −593,573−100.0% | Sold out |
| Davidson Kempner Capital Management LP | 0 | $0 | 0.00% | −559,644−100.0% | Sold out |
| TIG Advisors, LLC | 0 | $0 | 0.00% | −541,378−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −502,846−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −479,763−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −462,588−100.0% | Sold out |
| Bank of America Corp | 0 | $0 | 0.00% | −452,333−100.0% | Sold out |
| O'Connor Alternative Investments LLC | 0 | $0 | 0.00% | −450,504−100.0% | Sold out |
| Magnetar Financial LLC | 0 | $0 | 0.00% | −394,931−100.0% | Sold out |
| Alpine Associates Management Inc. | 0 | $0 | 0.00% | −378,000−100.0% | Sold out |
| Highland Capital Management Fund Advisors, L.P. | 0 | $0 | 0.00% | −373,150−100.0% | Sold out |
| Affinity Asset Advisors, LLC | 0 | $0 | 0.00% | −362,764−100.0% | Sold out |
| Northern Trust Corp | 0 | $0 | 0.00% | −350,065−100.0% | Sold out |
| Charles Schwab Investment Management Inc | 0 | $0 | 0.00% | −346,092−100.0% | Sold out |
| Alliancebernstein L.P. | 0 | $0 | 0.00% | −544,227−100.0% | Sold out |
| Vanguard Fiduciary Trust Co | 0 | $0 | 0.00% | −308,546−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −303,847−100.0% | Sold out |
| Vivaldi Asset Management, LLC | 0 | $0 | 0.00% | −238,235−100.0% | Sold out |
| CNH Partners LLC | 0 | $0 | 0.00% | −231,730−100.0% | Sold out |
| AJU IB Investment Co., Ltd. | 0 | $0 | 0.00% | −223,486−100.0% | Sold out |
| LMR Partners LLP | 0 | $0 | 0.00% | −212,495−100.0% | Sold out |
| Barclays PLC | 0 | $0 | 0.00% | −207,642−100.0% | Sold out |
| Soros Fund Management LLCSuperinvestorSoros Fund Management | 0 | $0 | 0.00% | −200,000−100.0% | Sold out |
| Gabelli Funds LLC | 0 | $0 | 0.00% | −195,900−100.0% | Sold out |
| UBS Group AG | 0 | $0 | 0.00% | −194,709−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −187,354−100.0% | Sold out |
| Water Island Capital LLC | 0 | $0 | 0.00% | −183,409−100.0% | Sold out |
| Man Group plc | 0 | $0 | 0.00% | −180,000−100.0% | Sold out |
| Rock Springs Capital Management LP | 0 | $0 | 0.00% | −169,859−100.0% | Sold out |
| Gabelli & Co Investment Advisers, Inc. | 0 | $0 | 0.00% | −152,400−100.0% | Sold out |
| BNP Paribas Arbitrage, SA | 0 | $0 | 0.00% | −151,558−100.0% | Sold out |
| Groupe la Francaise | 0 | $0 | 0.00% | −151,046−100.0% | Sold out |
| Bank of New York Mellon Corp | 0 | $0 | 0.00% | −143,099−100.0% | Sold out |
| Credit Industriel Et Commercial | 0 | $0 | 0.00% | −134,648−100.0% | Sold out |
| Woodline Partners LP | 0 | $0 | 0.00% | −123,750−100.0% | Sold out |
| Gardner Lewis Asset Management L P | 0 | $0 | 0.00% | −123,197−100.0% | Sold out |
| Hudson Bay Capital Management LP | 0 | $0 | 0.00% | −122,900−100.0% | Sold out |
| Picton Mahoney Asset Management | 0 | $0 | 0.00% | −120,000−100.0% | Sold out |
| FMR LLC | 0 | $0 | 0.00% | −119,378−100.0% | Sold out |
| Slotnik Capital, LLC | 0 | $0 | 0.00% | −118,000−100.0% | Sold out |
| Oddo BHF Asset Management SAS | 0 | $0 | 0.00% | −115,000−100.0% | Sold out |
| Prelude Capital Management, LLC | 0 | $0 | 0.00% | −98,849−100.0% | Sold out |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −96,400−100.0% | Sold out |
| Nuveen, LLC | 0 | $0 | 0.00% | −85,294−100.0% | Sold out |
| Deutsche Bank AG | 0 | $0 | 0.00% | −80,664−100.0% | Sold out |
| Cinctive Capital Management LP | 0 | $0 | 0.00% | −80,000−100.0% | Sold out |
| Chicago Capital Management, LLC | 0 | $0 | 0.00% | −92,951−100.0% | Sold out |
| Sagefield Capital LP | 0 | $0 | 0.00% | −65,097−100.0% | Sold out |
| Athos Capital Ltd | 0 | $0 | 0.00% | −64,900−100.0% | Sold out |
| Russell Investments Group, Ltd. | 0 | $0 | 0.00% | −61,905−100.0% | Sold out |
| Samsara BioCapital, LLC | 0 | $0 | 0.00% | −60,873−100.0% | Sold out |
| UBS Asset Management Americas Inc | 0 | $0 | 0.00% | −57,289−100.0% | Sold out |
| Voleon Capital Management LP | 0 | $0 | 0.00% | −56,720−100.0% | Sold out |
| PSquared Asset Management AG | 0 | $0 | 0.00% | −55,251−100.0% | Sold out |
| Swiss National Bank | 0 | $0 | 0.00% | −54,700−100.0% | Sold out |
| Twin Securities, Inc. | 0 | $0 | 0.00% | −53,982−100.0% | Sold out |
| Susquehanna Portfolio Strategies, LLC | 0 | $0 | 0.00% | −50,938−100.0% | Sold out |
| Harvest Management LLC | 0 | $0 | 0.00% | −50,000−100.0% | Sold out |
| Congress Asset Management Co | 0 | $0 | 0.00% | −47,551−100.0% | Sold out |
| Invesco Ltd. | 0 | $0 | 0.00% | −47,280−100.0% | Sold out |
| Price T Rowe Associates Inc | 0 | $0 | 0.00% | −45,954−100.0% | Sold out |
| Rhumbline Advisers | 0 | $0 | 0.00% | −45,211−100.0% | Sold out |
| Maven Securities LTD | 0 | $0 | 0.00% | −42,500−100.0% | Sold out |
| Rafferty Asset Management, LLC | 0 | $0 | 0.00% | −39,441−100.0% | Sold out |
| California State Teachers Retirement System | 0 | $0 | 0.00% | −34,886−100.0% | Sold out |
| Equitec Proprietary Markets, LLC | 0 | $0 | 0.00% | −33,574−100.0% | Sold out |
| ADAR1 Capital Management, LLC | 0 | $0 | 0.00% | −32,084−100.0% | Sold out |
| Fifth Lane Capital, LP | 0 | $0 | 0.00% | −31,044−100.0% | Sold out |
| Abc Arbitrage SA | 0 | $0 | 0.00% | −30,347−100.0% | Sold out |
| Healthcare of Ontario Pension Plan Trust Fund | 0 | $0 | 0.00% | −30,000−100.0% | Sold out |
| Vanguard Asset Management, Ltd | 0 | $0 | 0.00% | −27,521−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −27,145−100.0% | Sold out |
| New York Life Investment Management LLC | 0 | $0 | 0.00% | −26,243−100.0% | Sold out |
| SG Americas Securities, LLC | 0 | $0 | 0.00% | −24,713−100.0% | Sold out |
| Yakira Capital Management, Inc. | 0 | $0 | 0.00% | −24,000−100.0% | Sold out |
| Skandinaviska Enskilda Banken AB (publ) | 0 | $0 | 0.00% | −24,000−100.0% | Sold out |
| Legal & General Group Plc | 0 | $0 | 0.00% | −21,888−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −21,806−100.0% | Sold out |
| Erste Asset Management GmbH | 0 | $0 | 0.00% | −21,000−100.0% | Sold out |
| MetLife Investment Management | 0 | $0 | 0.00% | −20,914−100.0% | Sold out |
| Mirae Asset Global ETFs Holdings Ltd. | 0 | $0 | 0.00% | −20,806−100.0% | Sold out |
| Vestcor Inc | 0 | $0 | 0.00% | −19,578−100.0% | Sold out |