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 |
|---|---|---|---|---|---|
| Perceptive Advisors LLC | 4,544,809 | $252.2M | 5.64% | +578,831+14.6% | Added |
| FMR LLC | 4,379,169 | $243.0M | 0.02% | −158,183−3.5% | Reduced |
| NEA Management Company, LLC | 3,745,262 | $207.9M | 13.85% | 00.0% | Unchanged |
| Paradigm Biocapital Advisors LP | 3,658,624 | $203.1M | 9.52% | +705,502+23.9% | Added |
| Sr One Capital Management, LP | 3,146,630 | $174.6M | 73.33% | −800,000−20.3% | Reduced |
| BlackRock Inc. | 3,018,538 | $167.5M | 0.00% | +310,876+11.5% | Added |
| Suvretta Capital Management, LLC | 2,435,974 | $135.2M | 6.18% | −433,993−15.1% | Reduced |
| Vanguard Group Inc | 2,061,819 | $114.4M | 0.00% | +23,262+1.1% | Added |
| State Street Corp | 1,773,839 | $98.4M | 0.00% | −240,406−11.9% | Reduced |
| Cormorant Asset Management, LP | 1,700,000 | $94.3M | 4.52% | −450,000−20.9% | Reduced |
| Janus Henderson Group PLC | 1,538,210 | $85.4M | 0.05% | −237,228−13.4% | Reduced |
| Price T Rowe Associates Inc | 1,260,180 | $69.9M | 0.01% | +323,309+34.5% | Added |
| Lord, Abbett & Co. LLC | 1,196,567 | $66.4M | 0.23% | +98,530+9.0% | Added |
| T. Rowe Price Investment Management, Inc. | 922,399 | $51.2M | 0.03% | +12,221+1.3% | Added |
| Geode Capital Management, LLC | 785,402 | $43.6M | 0.00% | +46,348+6.3% | Added |
| Deep Track Capital, LP | 725,145 | $40.2M | 1.41% | +725,145 | New |
| Morgan Stanley | 673,285 | $37.4M | 0.00% | +568,027+539.7% | Added |
| JPMorgan Chase & Co | 601,913 | $33.4M | 0.00% | +38,014+6.7% | Added |
| Samsara BioCapital, LLC | 460,441 | $25.6M | 3.98% | −153,480−25.0% | Reduced |
| Northern Trust Corp | 363,421 | $20.2M | 0.00% | −4,030−1.1% | Reduced |
| Goldman Sachs Group Inc | 355,693 | $19.7M | 0.00% | −519,165−59.3% | Reduced |
| Affinity Asset Advisors, LLC | 340,000 | $18.9M | 3.76% | −60,000−15.0% | Reduced |
| PFM Health Sciences, LP | 335,198 | $18.6M | 1.12% | +94,860+39.5% | Added |
| Adage Capital Partners GP, L.L.C. | 332,904 | $18.5M | 0.04% | −60,000−15.3% | Reduced |
| StemPoint Capital LP | 313,604 | $17.4M | 4.69% | +313,604 | New |
| Candriam Luxembourg S.C.A. | 282,013 | $15.7M | 0.11% | −116,007−29.1% | Reduced |
| Nuveen Asset Management, LLC | 279,626 | $15.5M | 0.00% | +35,433+14.5% | Added |
| Charles Schwab Investment Management Inc | 264,178 | $14.7M | 0.00% | +3,722+1.4% | Added |
| Voloridge Investment Management, LLC | 235,760 | $13.1M | 0.05% | +132,709+128.8% | Added |
| Federated Hermes, Inc. | 214,599 | $11.9M | 0.03% | +143,212+200.6% | Added |
| Bank of America Corp | 194,287 | $10.8M | 0.00% | +84,841+77.5% | Added |
| Russell Investments Group, Ltd. | 189,542 | $10.5M | 0.02% | +11,200+6.3% | Added |
| Parkman Healthcare Partners LLC | 168,262 | $9.34M | 1.32% | −35,220−17.3% | Reduced |
| Integral Health Asset Management, LLC | 160,000 | $8.88M | 1.28% | +160,000 | New |
| Soleus Capital Management, L.P. | 159,000 | $8.82M | 0.98% | −484,777−75.3% | Reduced |
| Victory Capital Management Inc | 155,652 | $8.64M | 0.01% | +126,002+425.0% | Added |
| Two Sigma Investments, LP | 145,274 | $8.06M | 0.02% | +3,178+2.2% | Added |
| Deutsche Bank AG | 139,187 | $7.72M | 0.00% | +120,097+629.1% | Added |
| Bank of New York Mellon Corp | 131,934 | $7.32M | 0.00% | +14,666+12.5% | Added |
| UBS Asset Management Americas Inc | 130,136 | $7.22M | 0.00% | −55,457−29.9% | Reduced |
| Barclays PLC | 129,426 | $7.18M | 0.00% | +43,239+50.2% | Added |
| Squarepoint Ops LLC | 129,156 | $7.17M | 0.03% | +129,156 | New |
| Cubist Systematic Strategies, LLC | 127,058 | $7.05M | 0.09% | +127,058 | New |
| Caas Capital Management LP | 124,959 | $6.94M | 6.58% | 00.0% | Unchanged |
| Walleye Capital LLC | 118,335 | $6.57M | 0.09% | −97,935−45.3% | Reduced |
| Rafferty Asset Management, LLC | 111,952 | $6.21M | 0.03% | −46,826−29.5% | Reduced |
| Woodline Partners LP | 104,060 | $5.78M | 0.06% | +104,060 | New |
| UBS Group AG | 97,045 | $5.39M | 0.00% | +47,613+96.3% | Added |
| Jane Street Group, LLC | 84,391 | $4.68M | 0.01% | +74,486+752.0% | Added |
| Voya Investment Management LLC | 81,472 | $4.52M | 0.00% | +24,320+42.6% | Added |
| TD Asset Management Inc | 81,318 | $4.51M | 0.00% | −282−0.3% | Reduced |
| Acuta Capital Partners, LLC | 77,000 | $4.27M | 2.41% | +77,000 | New |
| HighVista Strategies LLC | 72,230 | $4.01M | 1.45% | −5,798−7.4% | Reduced |
| D. E. Shaw & Co., Inc. | 67,074 | $3.72M | 0.01% | +67,074 | New |
| EAM Investors, LLC | 65,052 | $3.61M | 0.65% | +65,052 | New |
| Bamco Inc | 63,500 | $3.52M | 0.01% | +13,500+27.0% | Added |
| Twinbeech Capital LP | 63,464 | $3.52M | 0.06% | +63,464 | New |
| Renaissance Technologies LLC | 61,100 | $3.39M | 0.01% | +7,300+13.6% | Added |
| Vestal Point Capital, LP | 60,000 | $3.33M | 0.35% | +60,000 | New |
| Pictet Asset Management Holding SA | 58,245 | $3.23M | 0.00% | −329,875−85.0% | Reduced |
| Millennium Management LLC | 57,374 | $3.18M | 0.00% | +6,009+11.7% | Added |
| Swiss National Bank | 57,200 | $3.17M | 0.00% | −6,100−9.6% | Reduced |
| Citigroup Inc | 52,331 | $2.90M | 0.00% | −16,685−24.2% | Reduced |
| Rhumbline Advisers | 51,435 | $2.85M | 0.00% | +83+0.2% | Added |
| Great Point Partners LLC | 48,264 | $2.68M | 0.46% | −239,236−83.2% | Reduced |
| Manufacturers Life Insurance Company, The | 45,451 | $2.52M | 0.00% | +12,268+37.0% | Added |
| Schonfeld Strategic Advisors LLC | 40,510 | $2.25M | 0.02% | −15,847−28.1% | Reduced |
| MYDA Advisors LLC | 40,000 | $2.22M | 0.98% | +15,000+60.0% | Added |
| Putnam Investments LLC | 39,314 | $2.18M | 0.00% | −1,942−4.7% | Reduced |
| Credit Suisse AG | 37,183 | $2.06M | 0.00% | +2,704+7.8% | Added |
| Alliancebernstein L.P. | 37,000 | $2.05M | 0.00% | +790+2.2% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 36,982 | $2.05M | 0.01% | +17,618+91.0% | Added |
| Alps Advisors Inc | 32,402 | $1.80M | 0.01% | −3,308−9.3% | Reduced |
| California State Teachers Retirement System | 32,158 | $1.78M | 0.00% | −1,666−4.9% | Reduced |
| State of Wisconsin Investment Board | 31,381 | $1.74M | 0.00% | +3,721+13.5% | Added |
| DekaBank Deutsche Girozentrale | 30,000 | $1.71M | 0.00% | +14,000+87.5% | Added |
| Legal & General Group Plc | 29,762 | $1.65M | 0.00% | −105−0.4% | Reduced |
| SG Americas Securities, LLC | 28,785 | $1.60M | 0.02% | +11,718+68.7% | Added |
| Martingale Asset Management L P | 27,134 | $1.51M | 0.03% | +251+0.9% | Added |
| First Trust Advisors LP | 25,505 | $1.42M | 0.00% | +10,088+65.4% | Added |
| Congress Asset Management Co | 25,059 | $1.39M | 0.01% | −19−0.1% | Reduced |
| Invesco Ltd. | 24,994 | $1.39M | 0.00% | +1,064+4.4% | Added |
| Citadel Advisors LLC | 23,196 | $1.29M | 0.00% | −21,500−48.1% | Reduced |
| Susquehanna International Group, LLP | 23,081 | $1.28M | 0.00% | +8,981+63.7% | Added |
| Advantage Alpha Capital Partners LP | 22,673 | $1.26M | 0.24% | +22,673 | New |
| Mirae Asset Global Investments Co., Ltd. | 22,367 | $1.24M | 0.00% | −1,214−5.1% | Reduced |
| FORA Capital, LLC | 22,217 | $1.23M | 0.11% | +22,217 | New |
| MetLife Investment Management | 20,184 | $1.12M | 0.01% | 00.0% | Unchanged |
| American International Group, Inc. | 19,066 | $1.06M | 0.00% | +125+0.7% | Added |
| Profund Advisors LLC | 18,597 | $1.03M | 0.04% | −8,275−30.8% | Reduced |
| Franklin Resources Inc | 18,243 | $1.01M | 0.00% | 00.0% | Unchanged |
| Point72 Middle East FZE | 17,903 | $993.6K | 0.07% | +17,903 | New |
| Allianz Asset Management GmbH | 15,800 | $876.9K | 0.00% | +7,500+90.4% | Added |
| New York State Common Retirement Fund | 15,438 | $856.8K | 0.00% | −62−0.4% | Reduced |
| Entropy Technologies, LP | 15,416 | $855.6K | 0.16% | +15,416 | New |
| Jump Financial, LLC | 15,183 | $842.7K | 0.03% | +15,183 | New |
| Wellington Management Group LLP | 14,069 | $780.8K | 0.00% | −43,565−75.6% | Reduced |
| Qube Research & Technologies Ltd | 13,925 | $772.8K | 0.00% | +13,925 | New |
| HRT Financial LP | 12,725 | $706.0K | 0.01% | −8,290−39.4% | Reduced |
| HighTower Advisors, LLC | 12,447 | $691.0K | 0.00% | +39+0.3% | Added |