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 2024
Institutional positions in Arcellx, Inc. as of Jun 30, 2024. 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
- 167
- −15 vs. Q1 2024
- Shares held
- 50.2M
- +3.25M (+6.9%) vs. Q1 2024
- Total value
- $2.77B
- −$494.3M (−15.1%) vs. Q1 2024
- New holders
- 22
- 80 more added
- Sold out
- 37
- 49 more reduced
1 institution that held it in Q1 2024 haven't filed for Q2 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 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, Q2 2024
Shares, value and share of portfolio for each institution holding Arcellx, Inc.; share changes are against Q1 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| State of Wisconsin Investment Board | 39,165 | $2.16M | 0.01% | +12,539+47.1% | Added |
| Walleye Capital LLC | 41,144 | $2.27M | 0.02% | −53,064−56.3% | Reduced |
| Alps Advisors Inc | 41,722 | $2.30M | 0.02% | +4,487+12.1% | Added |
| MYDA Advisors LLC | 42,000 | $2.32M | 0.71% | +7,000+20.0% | Added |
| Acuta Capital Partners, LLC | 42,200 | $2.33M | 1.96% | +7,700+22.3% | Added |
| Jacobs Levy Equity Management, Inc | 47,817 | $2.64M | 0.01% | +47,817 | New |
| HighVista Strategies LLC | 51,040 | $2.82M | 1.03% | −21,190−29.3% | Reduced |
| Jane Street Group, LLC | 52,015 | $2.87M | 0.00% | +15,158+41.1% | Added |
| Twinbeech Capital LP | 53,585 | $2.96M | 0.06% | +23,141+76.0% | Added |
| Alliancebernstein L.P. | 55,811 | $3.08M | 0.00% | +16,231+41.0% | Added |
| Franklin Resources Inc | 56,701 | $3.13M | 0.00% | +2,363+4.3% | Added |
| Superstring Capital Management LP | 59,133 | $3.26M | 4.11% | +59,133 | New |
| Rhumbline Advisers | 60,570 | $3.34M | 0.00% | +7,568+14.3% | Added |
| Swiss National Bank | 62,900 | $3.47M | 0.00% | +6,500+11.5% | Added |
| UBS Group AG | 63,577 | $3.51M | 0.00% | −39,904−38.6% | Reduced |
| Thrivent Financial for Lutherans | 64,025 | $3.53M | 0.01% | −3,515−5.2% | Reduced |
| Manufacturers Life Insurance Company, The | 73,332 | $4.05M | 0.00% | +26,134+55.4% | Added |
| Duquesne Family Office LLCSuperinvestorDuquesne Family Office | 74,100 | $4.09M | 0.15% | 00.0% | Unchanged |
| Rafferty Asset Management, LLC | 85,812 | $4.74M | 0.02% | −40,939−32.3% | Reduced |
| Man Group plc | 104,046 | $5.74M | 0.02% | +104,046 | New |
| Woodline Partners LP | 107,699 | $5.94M | 0.06% | +3,639+3.5% | Added |
| Nuveen Asset Management, LLC | 121,911 | $6.73M | 0.00% | −64,872−34.7% | Reduced |
| TD Asset Management Inc | 123,118 | $6.79M | 0.01% | +33,200+36.9% | Added |
| Qube Research & Technologies Ltd | 144,636 | $7.98M | 0.01% | +43,450+42.9% | Added |
| Bank of New York Mellon Corp | 147,198 | $8.12M | 0.00% | +26,134+21.6% | Added |
| Parkman Healthcare Partners LLC | 156,843 | $8.66M | 1.18% | +245+0.2% | Added |
| Soleus Capital Management, L.P. | 170,741 | $9.42M | 0.83% | +20,741+13.8% | Added |
| Eagle Asset Management Inc | 190,604 | $10.2M | 0.05% | −33,930−15.1% | Reduced |
| Cutter Capital Management, LP | 187,000 | $10.3M | 3.15% | +80,000+74.8% | Added |
| Candriam Luxembourg S.C.A. | 217,008 | $12.0M | 0.07% | −3,000−1.4% | Reduced |
| Voya Investment Management LLC | 218,287 | $12.0M | 0.01% | −164,271−42.9% | Reduced |
| Voloridge Investment Management, LLC | 234,728 | $13.0M | 0.05% | −128,365−35.4% | Reduced |
| Russell Investments Group, Ltd. | 235,591 | $13.0M | 0.02% | +40,154+20.5% | Added |
| Goldman Sachs Group Inc | 258,167 | $14.2M | 0.00% | −14,626−5.4% | Reduced |
| JPMorgan Chase & Co | 261,359 | $14.4M | 0.00% | −290,391−52.6% | Reduced |
| Integral Health Asset Management, LLC | 275,000 | $15.2M | 1.51% | +20,000+7.8% | Added |
| StemPoint Capital LP | 280,709 | $15.5M | 4.56% | +140,442+100.1% | Added |
| Victory Capital Management Inc | 283,872 | $15.7M | 0.02% | +48,006+20.4% | Added |
| Bank of America Corp | 303,406 | $16.7M | 0.00% | −111,135−26.8% | Reduced |
| UBS Asset Management Americas Inc | 310,382 | $17.1M | 0.00% | +44,972+16.9% | Added |
| PFM Health Sciences, LP | 311,980 | $17.2M | 0.94% | +8,770+2.9% | Added |
| Charles Schwab Investment Management Inc | 313,893 | $17.3M | 0.00% | +31,883+11.3% | Added |
| Adage Capital Partners GP, L.L.C. | 323,468 | $17.9M | 0.03% | +51,459+18.9% | Added |
| Bamco Inc | 342,760 | $18.9M | 0.05% | +93,767+37.7% | Added |
| Northern Trust Corp | 350,580 | $19.3M | 0.00% | −8,880−2.5% | Reduced |
| Deutsche Bank AG | 446,530 | $24.6M | 0.01% | −1,253−0.3% | Reduced |
| Samsara BioCapital, LLC | 453,641 | $25.0M | 5.24% | 00.0% | Unchanged |
| Affinity Asset Advisors, LLC | 460,000 | $25.4M | 4.00% | +160,000+53.3% | Added |
| Great Point Partners LLC | 492,000 | $27.2M | 5.20% | +192,000+64.0% | Added |
| Morgan Stanley | 545,077 | $30.1M | 0.00% | −151,685−21.8% | Reduced |
| Vestal Point Capital, LP | 675,000 | $37.3M | 2.78% | +575,000+575.0% | Added |
| Lord, Abbett & Co. LLC | 873,844 | $48.2M | 0.16% | −324,273−27.1% | Reduced |
| Geode Capital Management, LLC | 935,186 | $51.6M | 0.00% | +96,717+11.5% | Added |
| T. Rowe Price Investment Management, Inc. | 1,173,791 | $64.8M | 0.04% | +190,929+19.4% | Added |
| Suvretta Capital Management, LLC | 1,516,254 | $83.7M | 3.42% | −46,100−3.0% | Reduced |
| Cormorant Asset Management, LP | 1,525,000 | $84.2M | 4.90% | −255,000−14.3% | Reduced |
| Ra Capital Management, L.P. | 1,604,014 | $88.5M | 1.17% | +1,604,014 | New |
| Price T Rowe Associates Inc | 1,630,690 | $90.0M | 0.01% | +286,137+21.3% | Added |
| State Street Corp | 1,755,664 | $96.9M | 0.00% | −129,454−6.9% | Reduced |
| Janus Henderson Group PLC | 1,902,618 | $105.0M | 0.06% | +380,309+25.0% | Added |
| Vanguard Group Inc | 2,296,195 | $126.7M | 0.00% | +67,339+3.0% | Added |
| Sr One Capital Management, LP | 2,346,630 | $129.5M | 40.55% | 00.0% | Unchanged |
| BlackRock Inc. | 3,516,364 | $194.1M | 0.00% | +450,296+14.7% | Added |
| NEA Management Company, LLC | 3,745,262 | $206.7M | 15.55% | 00.0% | Unchanged |
| Paradigm Biocapital Advisors LP | 3,848,095 | $212.4M | 8.13% | +30,000+0.8% | Added |
| Perceptive Advisors LLC | 3,889,739 | $214.7M | 5.18% | −43,817−1.1% | Reduced |
| FMR LLC | 6,487,334 | $358.0M | 0.02% | +1,092,839+20.3% | Added |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −77,730−100.0% | Sold out |
| EAM Investors, LLC | 0 | $0 | 0.00% | −66,052−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −61,210−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | 0 | $0 | 0.00% | −57,248−100.0% | Sold out |
| D. E. Shaw & Co., Inc. | 0 | $0 | 0.00% | −25,286−100.0% | Sold out |
| FORA Capital, LLC | 0 | $0 | 0.00% | −22,217−100.0% | Sold out |
| American International Group, Inc. | 0 | $0 | 0.00% | −18,904−100.0% | Sold out |
| Seven Eight Capital, LP | 0 | $0 | 0.00% | −17,351−100.0% | Sold out |
| Norges Bank | 0 | $0 | 0.00% | −16,369−100.0% | Sold out |
| Advantage Alpha Capital Partners LP | 0 | $0 | 0.00% | −15,475−100.0% | Sold out |
| Entropy Technologies, LP | 0 | $0 | 0.00% | −14,526−100.0% | Sold out |
| SG Americas Securities, LLC | 0 | $0 | 0.00% | −12,253−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −9,310−100.0% | Sold out |
| Danske Bank A/S | 0 | $0 | 0.00% | −8,990−100.0% | Sold out |
| Acadian Asset Management LLC | 0 | $0 | 0.00% | −7,882−100.0% | Sold out |
| Eschler Asset Management LLP | 0 | $0 | 0.00% | −6,787−100.0% | Sold out |
| Oxford Asset Management LLP | 0 | $0 | 0.00% | −5,305−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −4,062−100.0% | Sold out |
| Pictet Asset Management Holding SA | 0 | $0 | 0.00% | −3,519−100.0% | Sold out |
| Arrowstreet Capital, Limited Partnership | 0 | $0 | 0.00% | −3,500−100.0% | Sold out |
| Prudential Financial Inc | 0 | $0 | 0.00% | −3,484−100.0% | Sold out |
| Simplicity Wealth,LLC | 0 | $0 | 0.00% | −3,331−100.0% | Sold out |
| Bleakley Financial Group, LLC | 0 | $0 | 0.00% | −3,331−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −3,300−100.0% | Sold out |
| Advisory Alpha, LLC | 0 | $0 | 0.00% | −3,000−100.0% | Sold out |
| Envestnet Asset Management Inc | 0 | $0 | 0.00% | −2,948−100.0% | Sold out |
| Mackenzie Financial Corp | 0 | $0 | 0.00% | −2,912−100.0% | Sold out |
| Metropolitan Life Insurance Co | 0 | $0 | 0.00% | −2,107−100.0% | Sold out |
| Point72 Asia (Singapore) Pte. Ltd. | 0 | $0 | 0.00% | −1,498−100.0% | Sold out |
| Harvest Fund Management Co., Ltd | 0 | $0 | 0.00% | −1,391−100.0% | Sold out |
| Plato Investment Management Ltd | 0 | $0 | 0.00% | −729−100.0% | Sold out |
| Point72 (DIFC) Ltd | 0 | $0 | 0.00% | −644−100.0% | Sold out |
| GWM Advisors LLC | 0 | $0 | 0.00% | −527−100.0% | Sold out |