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, Q1 2026
Institutional positions in Arcellx, Inc. as of Mar 31, 2026. 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
ACLX is no longer listed, so this page shows Q1 2026. 13F filings for later quarters list far fewer holders.
- Institutional holders
- 240
- +26 vs. Q4 2025
- Shares held
- 57.0M
- −5.51M (−8.8%) vs. Q4 2025
- Total value
- $6.52B
- +$2.44B (+59.9%) vs. Q4 2025
- New holders
- 97
- 62 more added
- Sold out
- 71
- 56 more reduced
4 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Arcellx, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Sterling Capital Management LLC | 249 | $28.6K | 0.00% | +20+8.7% | Added |
| SBI Securities Co., Ltd. | 239 | $27.4K | 0.00% | −3,277−93.2% | Reduced |
| Optiver Holding B.V. | 226 | $25.9K | 0.00% | +182+413.6% | Added |
| Covestor Ltd | 151 | $17.0K | 0.01% | −74−32.9% | Reduced |
| Parallel Advisors, LLC | 133 | $15.3K | 0.00% | +78+141.8% | Added |
| E Fund Management (Hong Kong) Co., Ltd. | 126 | $14.5K | 0.01% | +126 | New |
| Keating Financial Advisory Services, Inc. | 107 | $12.3K | 0.00% | −103−49.0% | Reduced |
| Allworth Financial LP | 80 | $9.19K | 0.00% | +56+233.3% | Added |
| EverSource Wealth Advisors, LLC | 78 | $8.95K | 0.00% | −32−29.1% | Reduced |
| CWM, LLC | 77 | $8.84K | 0.00% | −124−61.7% | Reduced |
| Royal Bank of Canada | 59 | $7.00K | 0.00% | −951−94.2% | Reduced |
| SRS Capital Advisors, Inc. | 60 | $6.89K | 0.00% | −91−60.3% | Reduced |
| SMA Capital LLC | 53 | $6.08K | 0.00% | +53 | New |
| Aventura Private Wealth, LLC | 45 | $5.17K | 0.00% | 00.0% | Unchanged |
| Farther Finance Advisors, LLC | 44 | $5.05K | 0.00% | +17+63.0% | Added |
| AdvisorNet Financial, Inc | 42 | $4.82K | 0.00% | +42 | New |
| Bare Financial Services, Inc | 39 | $4.48K | 0.00% | +14+56.0% | Added |
| Huntington National Bank | 32 | $3.67K | 0.00% | 00.0% | Unchanged |
| Signaturefd, LLC | 31 | $3.56K | 0.00% | −5−13.9% | Reduced |
| First Horizon Corp | 30 | $3.44K | 0.00% | +7+30.4% | Added |
| Parkside Financial Bank & Trust | 29 | $3.33K | 0.00% | 00.0% | Unchanged |
| Bessemer Group Inc | 30 | $3.00K | 0.00% | 00.0% | Unchanged |
| Assetmark, Inc | 18 | $2.07K | 0.00% | −32−64.0% | Reduced |
| TD Private Client Wealth LLC | 18 | $2.07K | 0.00% | +16+800.0% | Added |
| Northwestern Mutual Wealth Management Co | 16 | $1.84K | 0.00% | −9−36.0% | Reduced |
| Cornerstone Financial Management LLC | 15 | $1.72K | 0.00% | 00.0% | Unchanged |
| Quadrant Capital Group LLC | 14 | $1.61K | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 12 | $1.38K | 0.00% | −8−40.0% | Reduced |
| Basecamp Wealth Advisors LLC | 10 | $1.15K | 0.00% | −10−50.0% | Reduced |
| Bell Investment Advisors, Inc | 7 | $804 | 0.00% | 00.0% | Unchanged |
| Steward Partners Investment Advisory, LLC | 7 | $804 | 0.00% | 00.0% | Unchanged |
| Rothschild Investment LLC | 5 | $574 | 0.00% | −35−87.5% | Reduced |
| Hughes Financial Services, LLC | 5 | $574 | 0.00% | +3+150.0% | Added |
| LRI Investments, LLC | 4 | $459 | 0.00% | +4 | New |
| Ronald Blue Trust, Inc. | 3 | $344 | 0.00% | −5−62.5% | Reduced |
| Stone House Investment Management, LLC | 3 | $344 | 0.00% | +3 | New |
| MAI Capital Management | 2 | $230 | 0.00% | +2 | New |
| Twin Peaks Wealth Advisors, LLC | 2 | $230 | 0.00% | +2 | New |
| TFC Financial Management | 1 | $115 | 0.00% | 00.0% | Unchanged |
| Capital Advisors, Ltd. LLC | 1 | $0 | 0.00% | +1 | New |
| Vestal Point Capital, LP | 0 | $0 | 0.00% | −2,925,000−100.0% | Sold out |
| Perceptive Advisors LLC | 0 | $0 | 0.00% | −1,466,071−100.0% | Sold out |
| Ra Capital Management, L.P. | 0 | $0 | 0.00% | −1,267,156−100.0% | Sold out |
| Bamco Inc | 0 | $0 | 0.00% | −609,697−100.0% | Sold out |
| Lord, Abbett & Co. LLC | 0 | $0 | 0.00% | −449,634−100.0% | Sold out |
| American Century Companies Inc | 0 | $0 | 0.00% | −419,080−100.0% | Sold out |
| Hood River Capital Management LLC | 0 | $0 | 0.00% | −335,500−100.0% | Sold out |
| StemPoint Capital LP | 0 | $0 | 0.00% | −332,860−100.0% | Sold out |
| Fisher Asset Management, LLC | 0 | $0 | 0.00% | −322,855−100.0% | Sold out |
| TD Asset Management Inc | 0 | $0 | 0.00% | −300,856−100.0% | Sold out |
| Wellington Management Group LLP | 0 | $0 | 0.00% | −214,776−100.0% | Sold out |
| Integral Health Asset Management, LLC | 0 | $0 | 0.00% | −200,000−100.0% | Sold out |
| Catalio Capital Management, LP | 0 | $0 | 0.00% | −156,109−100.0% | Sold out |
| Rhenman & Partners Asset Management AB | 0 | $0 | 0.00% | −133,500−100.0% | Sold out |
| Clough Capital Partners L P | 0 | $0 | 0.00% | −129,780−100.0% | Sold out |
| Parkman Healthcare Partners LLC | 0 | $0 | 0.00% | −128,111−100.0% | Sold out |
| Raymond James Financial Inc | 0 | $0 | 0.00% | −122,346−100.0% | Sold out |
| Logos Global Management LP | 0 | $0 | 0.00% | −115,000−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −99,131−100.0% | Sold out |
| Candriam Luxembourg S.C.A. | 0 | $0 | 0.00% | −96,420−100.0% | Sold out |
| HighVista Strategies LLC | 0 | $0 | 0.00% | −75,002−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −72,583−100.0% | Sold out |
| Standard Life Aberdeen plc | 0 | $0 | 0.00% | −60,364−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −60,178−100.0% | Sold out |
| Pier Capital, LLC | 0 | $0 | 0.00% | −59,063−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −54,670−100.0% | Sold out |
| Edmond de Rothschild Holding S.A. | 0 | $0 | 0.00% | −45,480−100.0% | Sold out |
| HealthInvest Partners AB | 0 | $0 | 0.00% | −41,717−100.0% | Sold out |
| Schroder Investment Management Group | 0 | $0 | 0.00% | −42,478−100.0% | Sold out |
| NEOS Investment Management LLC | 0 | $0 | 0.00% | −39,904−100.0% | Sold out |
| Tema ETFs LLC | 0 | $0 | 0.00% | −39,314−100.0% | Sold out |
| J. Goldman & Co LP | 0 | $0 | 0.00% | −31,219−100.0% | Sold out |
| Soleus Capital Management, L.P. | 0 | $0 | 0.00% | −30,000−100.0% | Sold out |
| D. E. Shaw & Co., Inc. | 0 | $0 | 0.00% | −25,165−100.0% | Sold out |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −24,538−100.0% | Sold out |
| Harbor Capital Advisors, Inc. | 0 | $0 | 0.00% | −24,121−100.0% | Sold out |
| First Trust Advisors LP | 0 | $0 | 0.00% | −20,896−100.0% | Sold out |
| Intech Investment Management LLC | 0 | $0 | 0.00% | −15,031−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −14,915−100.0% | Sold out |
| HighTower Advisors, LLC | 0 | $0 | 0.00% | −12,558−100.0% | Sold out |
| Shay Capital LLC | 0 | $0 | 0.00% | −11,400−100.0% | Sold out |
| Martingale Asset Management L P | 0 | $0 | 0.00% | −10,618−100.0% | Sold out |
| Franklin Resources Inc | 0 | $0 | 0.00% | −10,131−100.0% | Sold out |
| Gotham Asset Management, LLC | 0 | $0 | 0.00% | −9,842−100.0% | Sold out |
| LPL Financial LLC | 0 | $0 | 0.00% | −9,622−100.0% | Sold out |
| Dimensional Fund Advisors LP | 0 | $0 | 0.00% | −8,903−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −8,442−100.0% | Sold out |
| PSP Research LLC | 0 | $0 | 0.00% | −8,224−100.0% | Sold out |
| AQR Capital Management LLC | 0 | $0 | 0.00% | −7,960−100.0% | Sold out |
| Headlands Technologies LLC | 0 | $0 | 0.00% | −7,320−100.0% | Sold out |
| Twinbeech Capital LP | 0 | $0 | 0.00% | −6,949−100.0% | Sold out |
| Allianz Asset Management GmbH | 0 | $0 | 0.00% | −6,200−100.0% | Sold out |
| Banque Pictet & Cie SA | 0 | $0 | 0.00% | −5,109−100.0% | Sold out |
| Farallon Capital Management, L.L.C. | 0 | $0 | 0.00% | −4,000−100.0% | Sold out |
| Virginia Retirement Systems Et Al | 0 | $0 | 0.00% | −4,000−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −3,796−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −3,414−100.0% | Sold out |
| Public Employees Retirement Association of Colorado | 0 | $0 | 0.00% | −3,217−100.0% | Sold out |
| Avanza Fonder AB | 0 | $0 | 0.00% | −2,003−100.0% | Sold out |
| Caption Management, LLC | 0 | $0 | 0.00% | −1,825−100.0% | Sold out |