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 2023
Institutional positions in Arcellx, Inc. as of Sep 30, 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
- 136
- −1 vs. Q2 2023
- Shares held
- 47.6M
- +58.8K (+0.1%) vs. Q2 2023
- Total value
- $1.71B
- +$204.8M (+13.6%) vs. Q2 2023
- New holders
- 17
- 59 more added
- Sold out
- 18
- 39 more reduced
1 institution that held it in Q2 2023 haven't filed for Q3 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2023
Shares, value and share of portfolio for each institution holding Arcellx, Inc.; share changes are against Q2 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 4,537,352 | $162.8M | 0.01% | −153,646−3.3% | Reduced |
| Perceptive Advisors LLC | 3,965,978 | $142.3M | 4.78% | −50,419−1.3% | Reduced |
| Sr One Capital Management, LP | 3,946,630 | $141.6M | 72.57% | 00.0% | Unchanged |
| NEA Management Company, LLC | 3,745,262 | $134.4M | 10.38% | 00.0% | Unchanged |
| Paradigm Biocapital Advisors LP | 2,953,122 | $106.0M | 7.23% | +606,122+25.8% | Added |
| Suvretta Capital Management, LLC | 2,869,967 | $103.0M | 5.56% | +21,800+0.8% | Added |
| BlackRock Inc. | 2,707,662 | $97.2M | 0.00% | +105,177+4.0% | Added |
| Cormorant Asset Management, LP | 2,150,000 | $77.1M | 4.50% | +150,000+7.5% | Added |
| Vanguard Group Inc | 2,038,557 | $73.1M | 0.00% | +43,970+2.2% | Added |
| State Street Corp | 2,014,245 | $72.3M | 0.00% | +82,480+4.3% | Added |
| Janus Henderson Group PLC | 1,775,438 | $63.7M | 0.04% | +21,191+1.2% | Added |
| Lord, Abbett & Co. LLC | 1,098,037 | $39.4M | 0.15% | −167,335−13.2% | Reduced |
| Novo Holdings A/S | 1,075,000 | $38.6M | 2.85% | +75,000+7.5% | Added |
| Price T Rowe Associates Inc | 936,871 | $33.6M | 0.00% | −120,910−11.4% | Reduced |
| T. Rowe Price Investment Management, Inc. | 910,178 | $32.7M | 0.02% | +910,178 | New |
| Goldman Sachs Group Inc | 874,858 | $31.4M | 0.01% | −144,056−14.1% | Reduced |
| Geode Capital Management, LLC | 739,054 | $26.5M | 0.00% | +53,826+7.9% | Added |
| Soleus Capital Management, L.P. | 643,777 | $23.1M | 2.33% | −358,222−35.8% | Reduced |
| Samsara BioCapital, LLC | 613,921 | $22.0M | 6.74% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 563,899 | $20.2M | 0.00% | +236,461+72.2% | Added |
| Vivo Capital, LLC | 503,565 | $18.1M | 2.24% | +69,780+16.1% | Added |
| Affinity Asset Advisors, LLC | 400,000 | $14.4M | 4.69% | +173,725+76.8% | Added |
| Candriam Luxembourg S.C.A. | 398,020 | $14.3M | 0.12% | 00.0% | Unchanged |
| Adage Capital Partners GP, L.L.C. | 392,904 | $14.1M | 0.03% | +20,000+5.4% | Added |
| Pictet Asset Management Holding SA | 388,120 | $13.9M | 0.02% | +388,120 | New |
| Northern Trust Corp | 367,451 | $13.2M | 0.00% | +7,901+2.2% | Added |
| Great Point Partners LLC | 287,500 | $10.3M | 1.94% | +250,000+666.7% | Added |
| Charles Schwab Investment Management Inc | 260,456 | $9.35M | 0.00% | +19,518+8.1% | Added |
| Nuveen Asset Management, LLC | 244,193 | $8.76M | 0.00% | +7,127+3.0% | Added |
| PFM Health Sciences, LP | 240,338 | $8.62M | 0.41% | −15,494−6.1% | Reduced |
| Walleye Capital LLC | 216,270 | $7.76M | 0.11% | −1,364−0.6% | Reduced |
| Parkman Healthcare Partners LLC | 203,482 | $7.30M | 1.34% | +8,222+4.2% | Added |
| UBS Asset Management Americas Inc | 185,593 | $6.66M | 0.00% | +168,993+1,018.0% | Added |
| Russell Investments Group, Ltd. | 178,342 | $6.40M | 0.01% | +62,000+53.3% | Added |
| Rafferty Asset Management, LLC | 158,778 | $5.70M | 0.03% | +14,682+10.2% | Added |
| Two Sigma Investments, LP | 142,096 | $5.10M | 0.01% | −183,997−56.4% | Reduced |
| Caas Capital Management LP | 124,959 | $4.48M | 1.00% | +124,959 | New |
| Bank of New York Mellon Corp | 117,268 | $4.21M | 0.00% | −13,256−10.2% | Reduced |
| Bank of America Corp | 109,446 | $3.93M | 0.00% | +18,741+20.7% | Added |
| Morgan Stanley | 105,258 | $3.78M | 0.00% | −173,853−62.3% | Reduced |
| Voloridge Investment Management, LLC | 103,051 | $3.70M | 0.02% | −171,520−62.5% | Reduced |
| Clough Capital Partners L P | 102,762 | $3.69M | 0.40% | −3,100−2.9% | Reduced |
| Barclays PLC | 86,187 | $3.09M | 0.00% | +10,591+14.0% | Added |
| TD Asset Management Inc | 81,600 | $2.93M | 0.00% | +52,800+183.3% | Added |
| HighVista Strategies LLC | 78,028 | $2.80M | 1.30% | +15,159+24.1% | Added |
| Federated Hermes, Inc. | 71,387 | $2.56M | 0.01% | −93,284−56.6% | Reduced |
| Citigroup Inc | 69,016 | $2.48M | 0.00% | +5,618+8.9% | Added |
| Schroder Investment Management Group | 64,751 | $2.32M | 0.00% | +8,774+15.7% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 64,000 | $2.30M | 0.01% | +64,000 | New |
| Swiss National Bank | 63,300 | $2.27M | 0.00% | +11,200+21.5% | Added |
| Wellington Management Group LLP | 57,634 | $2.07M | 0.00% | +1,432+2.5% | Added |
| Voya Investment Management LLC | 57,152 | $2.05M | 0.00% | +169+0.3% | Added |
| Schonfeld Strategic Advisors LLC | 56,357 | $2.02M | 0.02% | +7,099+14.4% | Added |
| Renaissance Technologies LLC | 53,800 | $1.93M | 0.00% | −290,867−84.4% | Reduced |
| Millennium Management LLC | 51,365 | $1.84M | 0.00% | −190,770−78.8% | Reduced |
| Rhumbline Advisers | 51,352 | $1.84M | 0.00% | +923+1.8% | Added |
| Bamco Inc | 50,000 | $1.79M | 0.01% | +10,000+25.0% | Added |
| UBS Group AG | 49,432 | $1.77M | 0.00% | −72,075−59.3% | Reduced |
| Citadel Advisors LLC | 44,696 | $1.60M | 0.00% | −316,379−87.6% | Reduced |
| Two Sigma Advisers, LP | 41,700 | $1.50M | 0.00% | −88,100−67.9% | Reduced |
| Putnam Investments LLC | 41,256 | $1.48M | 0.00% | −356−0.9% | Reduced |
| ExodusPoint Capital Management, LP | 37,952 | $1.36M | 0.02% | +37,952 | New |
| Wells Fargo & Company | 36,659 | $1.32M | 0.00% | −3,867−9.5% | Reduced |
| Alliancebernstein L.P. | 36,210 | $1.30M | 0.00% | 00.0% | Unchanged |
| Alps Advisors Inc | 35,710 | $1.28M | 0.01% | +432+1.2% | Added |
| Credit Suisse AG | 34,479 | $1.24M | 0.00% | −474−1.4% | Reduced |
| California State Teachers Retirement System | 33,824 | $1.21M | 0.00% | −52,189−60.7% | Reduced |
| Manufacturers Life Insurance Company, The | 33,183 | $1.19M | 0.00% | −9,685−22.6% | Reduced |
| Legal & General Group Plc | 29,867 | $1.07M | 0.00% | +5,230+21.2% | Added |
| Victory Capital Management Inc | 29,650 | $1.06M | 0.00% | −12,055−28.9% | Reduced |
| STRS Ohio | 29,481 | $1.06M | 0.00% | +23,281+375.5% | Added |
| State of Wisconsin Investment Board | 27,660 | $992.4K | 0.00% | +2,942+11.9% | Added |
| Martingale Asset Management L P | 26,883 | $964.6K | 0.02% | +6,655+32.9% | Added |
| Profund Advisors LLC | 26,872 | $964.2K | 0.05% | +527+2.0% | Added |
| Jefferies Financial Group Inc. | 25,476 | $914.1K | 0.02% | 00.0% | Unchanged |
| Congress Asset Management Co | 25,078 | $899.8K | 0.01% | +33+0.1% | Added |
| MYDA Advisors LLC | 25,000 | $897.0K | 0.34% | +25,000 | New |
| Invesco Ltd. | 23,930 | $858.6K | 0.00% | +6,162+34.7% | Added |
| Mirae Asset Global Investments Co., Ltd. | 23,581 | $846.1K | 0.00% | +228+1.0% | Added |
| HRT Financial LP | 21,015 | $754.0K | 0.01% | +21,015 | New |
| MetLife Investment Management | 20,184 | $724.2K | 0.01% | 00.0% | Unchanged |
| Knott David M Jr | 20,000 | $718.0K | 0.28% | −20,000−50.0% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 19,364 | $694.8K | 0.00% | +19,364 | New |
| Deutsche Bank AG | 19,090 | $684.9K | 0.00% | −126,921−86.9% | Reduced |
| American International Group, Inc. | 18,941 | $679.6K | 0.00% | +673+3.7% | Added |
| Teachers Retirement System of the State of Kentucky | 18,443 | $662.0K | 0.01% | 00.0% | Unchanged |
| Gsa Capital Partners LLP | 18,304 | $657.0K | 0.06% | +18,304 | New |
| Franklin Resources Inc | 18,243 | $654.6K | 0.00% | +6,143+50.8% | Added |
| SG Americas Securities, LLC | 17,067 | $612.0K | 0.01% | +17,067 | New |
| Graham Capital Management, L.P. | 16,826 | $603.7K | 0.02% | +4,312+34.5% | Added |
| DekaBank Deutsche Girozentrale | 16,000 | $583.0K | 0.00% | 00.0% | Unchanged |
| AQR Capital Management LLC | 15,809 | $567.2K | 0.00% | −26,451−62.6% | Reduced |
| New York State Common Retirement Fund | 15,500 | $556.1K | 0.00% | +174+1.1% | Added |
| First Trust Advisors LP | 15,417 | $553.2K | 0.00% | −24,884−61.7% | Reduced |
| Walleye Trading LLC | 14,804 | $531.2K | 0.01% | +379+2.6% | Added |
| Endurant Capital Management LP | 14,158 | $508.0K | 0.46% | +14,158 | New |
| Susquehanna International Group, LLP | 14,100 | $505.9K | 0.00% | −2,002−12.4% | Reduced |
| Utah Retirement Systems | 12,895 | $462.7K | 0.01% | 00.0% | Unchanged |
| HighTower Advisors, LLC | 12,408 | $445.0K | 0.00% | +118+1.0% | Added |
| Jasper Ridge Partners, L.P. | 11,820 | $424.1K | 0.02% | 00.0% | Unchanged |