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 2025
Institutional positions in Arcellx, Inc. as of Dec 31, 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
- 218
- +11 vs. Q3 2025
- Shares held
- 66.6M
- +3.56M (+5.6%) vs. Q3 2025
- Total value
- $4.34B
- −$833.5M (−16.1%) vs. Q3 2025
- New holders
- 42
- 72 more added
- Sold out
- 31
- 70 more reduced
2 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Arcellx, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Dunhill Financial, LLC | 1 | $44 | 0.00% | +1 | New |
| Massmutual Trust Co FSB | 1 | $65 | 0.00% | 00.0% | Unchanged |
| TFC Financial Management | 1 | $66 | 0.00% | 00.0% | Unchanged |
| TD Private Client Wealth LLC | 2 | $130 | 0.00% | +2 | New |
| Hughes Financial Services, LLC | 2 | $130 | 0.00% | +2 | New |
| TD Capital Management LLC | 5 | $326 | 0.00% | 00.0% | Unchanged |
| Global Retirement Partners, LLC | 5 | $326 | 0.00% | 00.0% | Unchanged |
| Steward Partners Investment Advisory, LLC | 7 | $456 | 0.00% | 00.0% | Unchanged |
| Bell Investment Advisors, Inc | 7 | $457 | 0.00% | 00.0% | Unchanged |
| Ronald Blue Trust, Inc. | 8 | $522 | 0.00% | +8 | New |
| Quadrant Capital Group LLC | 14 | $913 | 0.00% | 00.0% | Unchanged |
| Cornerstone Financial Management LLC | 15 | $978 | 0.00% | +15 | New |
| IFP Advisors, Inc | 20 | $1.30K | 0.00% | +16+400.0% | Added |
| Basecamp Wealth Advisors LLC | 20 | $1.30K | 0.00% | +20 | New |
| First Horizon Corp | 23 | $1.50K | 0.00% | +23 | New |
| Allworth Financial LP | 24 | $1.56K | 0.00% | −4−14.3% | Reduced |
| Bare Financial Services, Inc | 25 | $1.63K | 0.00% | +8+47.1% | Added |
| Northwestern Mutual Wealth Management Co | 25 | $1.63K | 0.00% | +25 | New |
| Fortitude Family Office, LLC | 26 | $1.70K | 0.00% | 00.0% | Unchanged |
| Farther Finance Advisors, LLC | 27 | $1.76K | 0.00% | −38−58.5% | Reduced |
| Parkside Financial Bank & Trust | 29 | $1.89K | 0.00% | 00.0% | Unchanged |
| Bessemer Group Inc | 30 | $2.00K | 0.00% | 00.0% | Unchanged |
| Huntington National Bank | 32 | $2.09K | 0.00% | 00.0% | Unchanged |
| Signaturefd, LLC | 36 | $2.35K | 0.00% | +10+38.5% | Added |
| Rothschild Investment LLC | 40 | $2.61K | 0.00% | −15−27.3% | Reduced |
| Optiver Holding B.V. | 44 | $2.87K | 0.00% | −214−82.9% | Reduced |
| Aventura Private Wealth, LLC | 45 | $2.93K | 0.00% | 00.0% | Unchanged |
| Assetmark, Inc | 50 | $3.26K | 0.00% | +37+284.6% | Added |
| Parallel Advisors, LLC | 55 | $3.59K | 0.00% | 00.0% | Unchanged |
| Comerica Bank | 61 | $3.98K | 0.00% | +2+3.4% | Added |
| Larson Financial Group LLC | 79 | $5.15K | 0.00% | −7−8.1% | Reduced |
| Advisor Group Holdings, Inc. | 94 | $6.13K | 0.00% | −3−3.1% | Reduced |
| Rockefeller Capital Management L.P. | 97 | $6.32K | 0.00% | +89+1,112.5% | Added |
| EverSource Wealth Advisors, LLC | 110 | $7.17K | 0.00% | −36−24.7% | Reduced |
| SRS Capital Advisors, Inc. | 151 | $9.85K | 0.00% | +42+38.5% | Added |
| Pinnacle Wealth Planning Services, Inc. | 160 | $10.4K | 0.00% | +160 | New |
| Daiwa Securities Group Inc. | 174 | $11.0K | 0.00% | 00.0% | Unchanged |
| Kemnay Advisory Services Inc. | 179 | $11.7K | 0.00% | +179 | New |
| CWM, LLC | 201 | $13.0K | 0.00% | −144−41.7% | Reduced |
| Keating Financial Advisory Services, Inc. | 210 | $13.7K | 0.00% | +210 | New |
| Sterling Capital Management LLC | 229 | $14.9K | 0.00% | +146+175.9% | Added |
| Covestor Ltd | 225 | $15.0K | 0.01% | −164−42.2% | Reduced |
| Los Angeles Capital Management LLC | 176 | $15.4K | 0.00% | +176 | New |
| Versant Capital Management, Inc | 243 | $15.8K | 0.00% | 00.0% | Unchanged |
| Smartleaf Asset Management LLC | 317 | $20.2K | 0.00% | +241+317.1% | Added |
| GAMMA Investing LLC | 334 | $21.8K | 0.00% | −36−9.7% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 366 | $24.0K | 0.00% | +104+39.7% | Added |
| The PNC Financial Services Group, Inc. | 425 | $27.7K | 0.00% | −35−7.6% | Reduced |
| Tower Research Capital LLC (TRC) | 427 | $27.8K | 0.00% | −569−57.1% | Reduced |
| Nisa Investment Advisors, LLC | 429 | $28.0K | 0.00% | −96−18.3% | Reduced |
| Ramirez Asset Management, Inc. | 500 | $32.6K | 0.00% | 00.0% | Unchanged |
| State of Wyoming | 537 | $35.0K | 0.00% | +102+23.4% | Added |
| Federated Hermes, Inc. | 697 | $45.4K | 0.00% | +133+23.6% | Added |
| US Bancorp | 948 | $61.8K | 0.00% | −849−47.2% | Reduced |
| Jones Financial Companies LLLP | 967 | $63.0K | 0.00% | +967 | New |
| Royal Bank of Canada | 1,010 | $66.0K | 0.00% | −61,888−98.4% | Reduced |
| KBC Group NV | 1,056 | $69.0K | 0.00% | 00.0% | Unchanged |
| Amalgamated Bank | 1,076 | $70.0K | 0.00% | −33−3.0% | Reduced |
| GF Fund Management Co. Ltd. | 1,136 | $74.1K | 0.00% | −57−4.8% | Reduced |
| Caption Management, LLC | 1,825 | $119.0K | 0.01% | −10,775−85.5% | Reduced |
| Group One Trading, L.P. | 1,969 | $128.4K | 0.00% | +1,388+238.9% | Added |
| Avanza Fonder AB | 2,003 | $130.6K | 0.00% | +784+64.3% | Added |
| Mirae Asset Global Investments Co., Ltd. | 2,810 | $183.2K | 0.00% | +666+31.1% | Added |
| Ameritas Investment Partners, Inc. | 2,861 | $186.5K | 0.01% | 00.0% | Unchanged |
| Mariner, LLC | 3,113 | $205.8K | 0.00% | −4,202−57.4% | Reduced |
| Public Employees Retirement Association of Colorado | 3,217 | $210.0K | 0.00% | 00.0% | Unchanged |
| Advisory Alpha, LLC | 3,313 | $216.0K | 0.01% | +313+10.4% | Added |
| Man Group plc | 3,322 | $216.6K | 0.00% | +3,322 | New |
| Simplex Trading, LLC | 3,414 | $222.6K | 0.01% | +3,414 | New |
| SBI Securities Co., Ltd. | 3,516 | $229.2K | 0.01% | +154+4.6% | Added |
| JustInvest LLC | 3,526 | $229.9K | 0.00% | −279−7.3% | Reduced |
| BNP Paribas Arbitrage, SA | 3,605 | $235.0K | 0.00% | −65,228−94.8% | Reduced |
| Virtus Investment Advisers, Inc. | 3,701 | $241.3K | 0.07% | +1,990+116.3% | Added |
| Harbour Capital Advisors, LLC | 3,825 | $242.3K | 0.05% | +3,825 | New |
| Quest Partners LLC | 3,796 | $247.5K | 0.01% | +3,556+1,481.7% | Added |
| Quantinno Capital Management LP | 3,871 | $252.4K | 0.00% | +3,871 | New |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 3,952 | $257.7K | 0.00% | −96−2.4% | Reduced |
| Farallon Capital Management, L.L.C. | 4,000 | $260.8K | 0.00% | 00.0% | Unchanged |
| Virginia Retirement Systems Et Al | 4,000 | $260.8K | 0.00% | +900+29.0% | Added |
| Mercer Global Advisors Inc | 4,107 | $267.8K | 0.00% | +655+19.0% | Added |
| Teacher Retirement System of Texas | 4,144 | $270.2K | 0.00% | −2,653−39.0% | Reduced |
| Marks Group Wealth Management, Inc | 4,524 | $295.0K | 0.03% | +4,524 | New |
| Advisors Asset Management, Inc. | 4,670 | $304.5K | 0.01% | −3,405−42.2% | Reduced |
| Banque Pictet & Cie SA | 5,109 | $333.1K | 0.00% | +5,109 | New |
| KLP Kapitalforvaltning AS | 5,900 | $384.7K | 0.00% | +400+7.3% | Added |
| Allianz Asset Management GmbH | 6,200 | $404.2K | 0.00% | −700−10.1% | Reduced |
| Twinbeech Capital LP | 6,949 | $453.1K | 0.03% | +6,949 | New |
| Susquehanna International Group, LLP | 7,258 | $473.2K | 0.00% | −86−1.2% | Reduced |
| Creative Planning | 7,319 | $477.2K | 0.00% | −2,843−28.0% | Reduced |
| Headlands Technologies LLC | 7,320 | $477.3K | 0.04% | +7,320 | New |
| Arizona State Retirement System | 7,613 | $496.4K | 0.00% | −509−6.3% | Reduced |
| Aspiriant, LLC | 7,910 | $515.7K | 0.01% | +7,910 | New |
| AQR Capital Management LLC | 7,960 | $519.0K | 0.00% | −23,755−74.9% | Reduced |
| High Net Worth Advisory Group LLC | 8,000 | $521.6K | 0.12% | 00.0% | Unchanged |
| PSP Research LLC | 8,224 | $536.2K | 0.47% | +8,224 | New |
| Marshall Wace, LLP | 8,442 | $550.4K | 0.00% | +8,442 | New |
| Guggenheim Capital LLC | 8,538 | $556.7K | 0.00% | +366+4.5% | Added |
| ProShare Advisors LLC | 8,818 | $574.9K | 0.00% | +987+12.6% | Added |
| Millennium Management LLC | 8,821 | $575.1K | 0.00% | −31,520−78.1% | Reduced |
| Dimensional Fund Advisors LP | 8,903 | $580.5K | 0.00% | −74,621−89.3% | Reduced |