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 2023
Institutional positions in Arcellx, Inc. as of Dec 31, 2023. 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
- 156
- +20 vs. Q3 2023
- Shares held
- 46.7M
- −840.1K (−1.8%) vs. Q3 2023
- Total value
- $2.59B
- +$886.9M (+52.0%) vs. Q3 2023
- New holders
- 37
- 59 more added
- Sold out
- 17
- 47 more reduced
Compare with Q3 2023: 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 2023
Shares, value and share of portfolio for each institution holding Arcellx, Inc.; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Bamco Inc | 63,500 | $3.52M | 0.01% | +13,500+27.0% | Added |
| EAM Investors, LLC | 65,052 | $3.61M | 0.65% | +65,052 | New |
| D. E. Shaw & Co., Inc. | 67,074 | $3.72M | 0.01% | +67,074 | New |
| HighVista Strategies LLC | 72,230 | $4.01M | 1.45% | −5,798−7.4% | Reduced |
| Acuta Capital Partners, LLC | 77,000 | $4.27M | 2.41% | +77,000 | New |
| TD Asset Management Inc | 81,318 | $4.51M | 0.00% | −282−0.3% | Reduced |
| Voya Investment Management LLC | 81,472 | $4.52M | 0.00% | +24,320+42.6% | Added |
| Jane Street Group, LLC | 84,391 | $4.68M | 0.01% | +74,486+752.0% | Added |
| UBS Group AG | 97,045 | $5.39M | 0.00% | +47,613+96.3% | Added |
| Woodline Partners LP | 104,060 | $5.78M | 0.06% | +104,060 | New |
| Rafferty Asset Management, LLC | 111,952 | $6.21M | 0.03% | −46,826−29.5% | Reduced |
| Walleye Capital LLC | 118,335 | $6.57M | 0.09% | −97,935−45.3% | Reduced |
| Caas Capital Management LP | 124,959 | $6.94M | 6.58% | 00.0% | Unchanged |
| Cubist Systematic Strategies, LLC | 127,058 | $7.05M | 0.09% | +127,058 | New |
| Squarepoint Ops LLC | 129,156 | $7.17M | 0.03% | +129,156 | New |
| Barclays PLC | 129,426 | $7.18M | 0.00% | +43,239+50.2% | Added |
| UBS Asset Management Americas Inc | 130,136 | $7.22M | 0.00% | −55,457−29.9% | Reduced |
| Bank of New York Mellon Corp | 131,934 | $7.32M | 0.00% | +14,666+12.5% | Added |
| Deutsche Bank AG | 139,187 | $7.72M | 0.00% | +120,097+629.1% | Added |
| Two Sigma Investments, LP | 145,274 | $8.06M | 0.02% | +3,178+2.2% | Added |
| Victory Capital Management Inc | 155,652 | $8.64M | 0.01% | +126,002+425.0% | Added |
| Soleus Capital Management, L.P. | 159,000 | $8.82M | 0.98% | −484,777−75.3% | Reduced |
| Integral Health Asset Management, LLC | 160,000 | $8.88M | 1.28% | +160,000 | New |
| Parkman Healthcare Partners LLC | 168,262 | $9.34M | 1.32% | −35,220−17.3% | Reduced |
| Russell Investments Group, Ltd. | 189,542 | $10.5M | 0.02% | +11,200+6.3% | Added |
| Bank of America Corp | 194,287 | $10.8M | 0.00% | +84,841+77.5% | Added |
| Federated Hermes, Inc. | 214,599 | $11.9M | 0.03% | +143,212+200.6% | Added |
| Voloridge Investment Management, LLC | 235,760 | $13.1M | 0.05% | +132,709+128.8% | Added |
| Charles Schwab Investment Management Inc | 264,178 | $14.7M | 0.00% | +3,722+1.4% | Added |
| Nuveen Asset Management, LLC | 279,626 | $15.5M | 0.00% | +35,433+14.5% | Added |
| Candriam Luxembourg S.C.A. | 282,013 | $15.7M | 0.11% | −116,007−29.1% | Reduced |
| StemPoint Capital LP | 313,604 | $17.4M | 4.69% | +313,604 | New |
| Adage Capital Partners GP, L.L.C. | 332,904 | $18.5M | 0.04% | −60,000−15.3% | Reduced |
| PFM Health Sciences, LP | 335,198 | $18.6M | 1.12% | +94,860+39.5% | Added |
| Affinity Asset Advisors, LLC | 340,000 | $18.9M | 3.76% | −60,000−15.0% | Reduced |
| Goldman Sachs Group Inc | 355,693 | $19.7M | 0.00% | −519,165−59.3% | Reduced |
| Northern Trust Corp | 363,421 | $20.2M | 0.00% | −4,030−1.1% | Reduced |
| Samsara BioCapital, LLC | 460,441 | $25.6M | 3.98% | −153,480−25.0% | Reduced |
| JPMorgan Chase & Co | 601,913 | $33.4M | 0.00% | +38,014+6.7% | Added |
| Morgan Stanley | 673,285 | $37.4M | 0.00% | +568,027+539.7% | Added |
| Deep Track Capital, LP | 725,145 | $40.2M | 1.41% | +725,145 | New |
| Geode Capital Management, LLC | 785,402 | $43.6M | 0.00% | +46,348+6.3% | Added |
| T. Rowe Price Investment Management, Inc. | 922,399 | $51.2M | 0.03% | +12,221+1.3% | Added |
| Lord, Abbett & Co. LLC | 1,196,567 | $66.4M | 0.23% | +98,530+9.0% | Added |
| Price T Rowe Associates Inc | 1,260,180 | $69.9M | 0.01% | +323,309+34.5% | Added |
| Janus Henderson Group PLC | 1,538,210 | $85.4M | 0.05% | −237,228−13.4% | Reduced |
| Cormorant Asset Management, LP | 1,700,000 | $94.3M | 4.52% | −450,000−20.9% | Reduced |
| State Street Corp | 1,773,839 | $98.4M | 0.00% | −240,406−11.9% | Reduced |
| Vanguard Group Inc | 2,061,819 | $114.4M | 0.00% | +23,262+1.1% | Added |
| Suvretta Capital Management, LLC | 2,435,974 | $135.2M | 6.18% | −433,993−15.1% | Reduced |
| BlackRock Inc. | 3,018,538 | $167.5M | 0.00% | +310,876+11.5% | Added |
| Sr One Capital Management, LP | 3,146,630 | $174.6M | 73.33% | −800,000−20.3% | Reduced |
| Paradigm Biocapital Advisors LP | 3,658,624 | $203.1M | 9.52% | +705,502+23.9% | Added |
| NEA Management Company, LLC | 3,745,262 | $207.9M | 13.85% | 00.0% | Unchanged |
| FMR LLC | 4,379,169 | $243.0M | 0.02% | −158,183−3.5% | Reduced |
| Perceptive Advisors LLC | 4,544,809 | $252.2M | 5.64% | +578,831+14.6% | Added |
| Novo Holdings A/S | 0 | $0 | 0.00% | −1,075,000−100.0% | Sold out |
| Vivo Capital, LLC | 0 | $0 | 0.00% | −503,565−100.0% | Sold out |
| Clough Capital Partners L P | 0 | $0 | 0.00% | −102,762−100.0% | Sold out |
| Schroder Investment Management Group | 0 | $0 | 0.00% | −64,751−100.0% | Sold out |
| Healthcare of Ontario Pension Plan Trust Fund | 0 | $0 | 0.00% | −64,000−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −37,952−100.0% | Sold out |
| Jefferies Financial Group Inc. | 0 | $0 | 0.00% | −25,476−100.0% | Sold out |
| Knott David M Jr | 0 | $0 | 0.00% | −20,000−100.0% | Sold out |
| Teachers Retirement System of the State of Kentucky | 0 | $0 | 0.00% | −18,443−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −18,304−100.0% | Sold out |
| Graham Capital Management, L.P. | 0 | $0 | 0.00% | −16,826−100.0% | Sold out |
| Endurant Capital Management LP | 0 | $0 | 0.00% | −14,158−100.0% | Sold out |
| Utah Retirement Systems | 0 | $0 | 0.00% | −12,895−100.0% | Sold out |
| LMR Partners LLP | 0 | $0 | 0.00% | −8,116−100.0% | Sold out |
| NinePointTwo Capital | 0 | $0 | 0.00% | −6,567−100.0% | Sold out |
| Bayesian Capital Management, LP | 0 | $0 | 0.00% | −6,100−100.0% | Sold out |
| Coppell Advisory Solutions LLC | 0 | $0 | 0.00% | −57−100.0% | Sold out |