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 2025
Institutional positions in Arcellx, Inc. as of Sep 30, 2025. 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
- 209
- +9 vs. Q2 2025
- Shares held
- 63.1M
- +1.70M (+2.8%) vs. Q2 2025
- Total value
- $5.18B
- +$1.17B (+29.1%) vs. Q2 2025
- New holders
- 30
- 59 more added
- Sold out
- 21
- 81 more reduced
3 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2025: 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 2025
Shares, value and share of portfolio for each institution holding Arcellx, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Jasper Ridge Partners, L.P. | 15,107 | $1.24M | 0.03% | +3,287+27.8% | Added |
| Cinctive Capital Management LP | 13,626 | $1.12M | 0.06% | −3,913−22.3% | Reduced |
| Franklin Resources Inc | 13,325 | $1.09M | 0.00% | −695−5.0% | Reduced |
| Caption Management, LLC | 12,600 | $1.03M | 0.06% | −14,156−52.9% | Reduced |
| HighTower Advisors, LLC | 12,560 | $1.03M | 0.00% | +18+0.1% | Added |
| Intech Investment Management LLC | 12,255 | $1.01M | 0.01% | −4,225−25.6% | Reduced |
| Fred Alger Management, LLC | 11,895 | $976.6K | 0.00% | +11,895 | New |
| Handelsbanken Fonder AB | 11,600 | $952.0K | 0.00% | 00.0% | Unchanged |
| StemPoint Capital LP | 11,376 | $934.0K | 0.19% | −190,076−94.4% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 11,117 | $912.7K | 0.00% | 00.0% | Unchanged |
| State Board of Administration of Florida Retirement System | 10,850 | $890.8K | 0.00% | 00.0% | Unchanged |
| Profund Advisors LLC | 10,785 | $885.4K | 0.03% | −1,102−9.3% | Reduced |
| Martingale Asset Management L P | 10,515 | $863.3K | 0.02% | 00.0% | Unchanged |
| Jefferies Financial Group Inc. | 10,500 | $862.0K | 0.01% | −2,500−19.2% | Reduced |
| Lighthouse Investment Partners, LLC | 10,500 | $862.0K | 0.03% | +10,500 | New |
| Creative Planning | 10,162 | $834.3K | 0.00% | +1,670+19.7% | Added |
| LPL Financial LLC | 10,021 | $822.7K | 0.00% | +75+0.8% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 9,910 | $813.6K | 0.00% | +1,365+16.0% | Added |
| Gotham Asset Management, LLC | 9,842 | $808.0K | 0.00% | 00.0% | Unchanged |
| Prudential Financial Inc | 9,770 | $802.1K | 0.00% | +4,870+99.4% | Added |
| China Universal Asset Management Co., Ltd. | 9,721 | $798.1K | 0.07% | −1,347−12.2% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 9,644 | $791.8K | 0.01% | +1,183+14.0% | Added |
| ExodusPoint Capital Management, LP | 9,446 | $775.5K | 0.01% | +9,446 | New |
| Guggenheim Capital LLC | 8,172 | $670.9K | 0.00% | −10.0% | Reduced |
| Arizona State Retirement System | 8,122 | $666.8K | 0.00% | −1,456−15.2% | Reduced |
| SG Americas Securities, LLC | 8,115 | $666.0K | 0.00% | +2,800+52.7% | Added |
| Advisors Asset Management, Inc. | 8,075 | $663.0K | 0.01% | −724−8.2% | Reduced |
| High Net Worth Advisory Group LLC | 8,000 | $656.8K | 0.16% | 00.0% | Unchanged |
| ProShare Advisors LLC | 7,831 | $642.9K | 0.00% | −1,734−18.1% | Reduced |
| Legato Capital Management LLC | 7,675 | $630.1K | 0.07% | +2,216+40.6% | Added |
| Susquehanna International Group, LLP | 7,344 | $602.9K | 0.00% | −55,589−88.3% | Reduced |
| Mariner, LLC | 7,315 | $600.6K | 0.00% | +1,846+33.8% | Added |
| Allianz Asset Management GmbH | 6,900 | $566.5K | 0.00% | −2,300−25.0% | Reduced |
| Teacher Retirement System of Texas | 6,797 | $558.0K | 0.00% | −2,086−23.5% | Reduced |
| KLP Kapitalforvaltning AS | 5,500 | $451.6K | 0.00% | −1,100−16.7% | Reduced |
| Aquatic Capital Management LLC | 5,232 | $429.5K | 0.01% | +5,232 | New |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 4,048 | $332.3K | 0.00% | +4,048 | New |
| Farallon Capital Management, L.L.C. | 4,000 | $328.4K | 0.00% | 00.0% | Unchanged |
| JustInvest LLC | 3,805 | $312.4K | 0.00% | +377+11.0% | Added |
| Brevan Howard Capital Management LP | 3,805 | $312.4K | 0.00% | −10,631−73.6% | Reduced |
| CIBC Bancorp USA Inc. | 3,650 | $299.7K | 0.00% | +3,650 | New |
| Mercer Global Advisors Inc | 3,452 | $283.4K | 0.00% | +3,452 | New |
| Integrated Wealth Concepts LLC | 3,423 | $281.0K | 0.00% | +283+9.0% | Added |
| Quarry LP | 3,376 | $277.2K | 0.07% | +675+25.0% | Added |
| SBI Securities Co., Ltd. | 3,362 | $276.0K | 0.01% | −93−2.7% | Reduced |
| Public Employees Retirement Association of Colorado | 3,217 | $264.0K | 0.00% | 00.0% | Unchanged |
| Virginia Retirement Systems Et Al | 3,100 | $254.5K | 0.00% | +3,100 | New |
| Advisory Alpha, LLC | 3,000 | $246.7K | 0.01% | +3,000 | New |
| SEI Investments Co | 2,895 | $237.7K | 0.00% | +2,895 | New |
| Ameritas Investment Partners, Inc. | 2,861 | $234.9K | 0.01% | −877−23.5% | Reduced |
| Xponance, Inc. | 2,694 | $221.2K | 0.00% | +2,694 | New |
| Principal Financial Group Inc | 2,622 | $215.3K | 0.00% | +2,622 | New |
| Mirae Asset Global Investments Co., Ltd. | 2,144 | $176.0K | 0.00% | +15+0.7% | Added |
| US Bancorp | 1,797 | $147.5K | 0.00% | +654+57.2% | Added |
| Virtus Investment Advisers, Inc. | 1,711 | $140.5K | 0.04% | +297+21.0% | Added |
| Avanza Fonder AB | 1,219 | $100.1K | 0.00% | 00.0% | Unchanged |
| GF Fund Management Co. Ltd. | 1,193 | $97.9K | 0.00% | −191−13.8% | Reduced |
| Amalgamated Bank | 1,109 | $91.0K | 0.00% | −140−11.2% | Reduced |
| KBC Group NV | 1,056 | $87.0K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 996 | $81.8K | 0.00% | −5,147−83.8% | Reduced |
| Abich Financial Wealth Management LLC | 750 | $61.6K | 0.02% | +750 | New |
| Wexford Capital LP | 686 | $56.3K | 0.02% | −1,734−71.7% | Reduced |
| Group One Trading, L.P. | 581 | $47.7K | 0.00% | +581 | New |
| Federated Hermes, Inc. | 564 | $46.3K | 0.00% | −26,371−97.9% | Reduced |
| Nisa Investment Advisors, LLC | 525 | $43.1K | 0.00% | 00.0% | Unchanged |
| Ramirez Asset Management, Inc. | 500 | $41.0K | 0.01% | +500 | New |
| The PNC Financial Services Group, Inc. | 460 | $37.8K | 0.00% | −291−38.7% | Reduced |
| State of Wyoming | 435 | $35.7K | 0.00% | +10+2.4% | Added |
| Covestor Ltd | 389 | $32.0K | 0.02% | −247−38.8% | Reduced |
| GAMMA Investing LLC | 370 | $30.4K | 0.00% | +67+22.1% | Added |
| CWM, LLC | 345 | $28.0K | 0.00% | +251+267.0% | Added |
| MAI Capital Management | 318 | $26.1K | 0.00% | +318 | New |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 262 | $22.0K | 0.00% | −39−13.0% | Reduced |
| Optiver Holding B.V. | 258 | $21.2K | 0.00% | +128+98.5% | Added |
| Versant Capital Management, Inc | 243 | $19.9K | 0.00% | 00.0% | Unchanged |
| Quest Partners LLC | 240 | $19.7K | 0.00% | −129−35.0% | Reduced |
| Daiwa Securities Group Inc. | 174 | $14.0K | 0.00% | −24−12.1% | Reduced |
| EverSource Wealth Advisors, LLC | 146 | $12.0K | 0.00% | +42+40.4% | Added |
| SRS Capital Advisors, Inc. | 109 | $8.95K | 0.00% | +58+113.7% | Added |
| Advisor Group Holdings, Inc. | 97 | $7.90K | 0.00% | +13+15.5% | Added |
| Larson Financial Group LLC | 86 | $7.06K | 0.00% | +29+50.9% | Added |
| Sterling Capital Management LLC | 83 | $6.81K | 0.00% | −5−5.7% | Reduced |
| Smartleaf Asset Management LLC | 76 | $6.01K | 0.00% | +55+261.9% | Added |
| Farther Finance Advisors, LLC | 65 | $5.34K | 0.00% | +57+712.5% | Added |
| Comerica Bank | 59 | $4.82K | 0.00% | 00.0% | Unchanged |
| Rothschild Investment LLC | 55 | $4.52K | 0.00% | −5−8.3% | Reduced |
| Parallel Advisors, LLC | 55 | $4.52K | 0.00% | 00.0% | Unchanged |
| Aventura Private Wealth, LLC | 45 | $3.69K | 0.00% | 00.0% | Unchanged |
| J.Safra Asset Management Corp | 40 | $3.28K | 0.00% | 00.0% | Unchanged |
| Huntington National Bank | 32 | $2.63K | 0.00% | 00.0% | Unchanged |
| Parkside Financial Bank & Trust | 29 | $2.38K | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 28 | $2.30K | 0.00% | −38−57.6% | Reduced |
| Fortitude Family Office, LLC | 26 | $2.13K | 0.00% | 00.0% | Unchanged |
| Signaturefd, LLC | 26 | $2.13K | 0.00% | +17+188.9% | Added |
| Bessemer Group Inc | 30 | $2.00K | 0.00% | 00.0% | Unchanged |
| Marquette Asset Management, LLC | 22 | $1.81K | 0.00% | +22 | New |
| Essential Partners LLC | 18 | $1.48K | 0.00% | +18 | New |
| Bare Financial Services, Inc | 17 | $1.40K | 0.00% | +7+70.0% | Added |
| Quadrant Capital Group LLC | 14 | $1.15K | 0.00% | +14 | New |
| Assetmark, Inc | 13 | $1.07K | 0.00% | 00.0% | Unchanged |