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 2024
Institutional positions in Arcellx, Inc. as of Sep 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
- 186
- +21 vs. Q2 2024
- Shares held
- 49.5M
- +2.76M (+5.9%) vs. Q2 2024
- Total value
- $4.13B
- +$1.56B (+60.3%) vs. Q2 2024
- New holders
- 39
- 68 more added
- Sold out
- 18
- 60 more reduced
2 institutions that held it in Q2 2024 haven't filed for Q3 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2024
Shares, value and share of portfolio for each institution holding Arcellx, Inc.; share changes are against Q2 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 6,479,273 | $541.1M | 0.03% | −8,061−0.1% | Reduced |
| BlackRock, Inc. | 4,246,692 | $354.6M | 0.01% | +4,246,692 | New |
| Paradigm Biocapital Advisors LP | 4,000,000 | $334.0M | 11.69% | +151,905+3.9% | Added |
| Perceptive Advisors LLC | 3,888,669 | $324.7M | 6.97% | −1,0700.0% | Reduced |
| NEA Management Company, LLC | 3,745,262 | $312.8M | 17.04% | 00.0% | Unchanged |
| Vanguard Group Inc | 2,462,096 | $205.6M | 0.00% | +165,901+7.2% | Added |
| Sr One Capital Management, LP | 2,346,630 | $196.0M | 39.29% | 00.0% | Unchanged |
| Janus Henderson Group PLC | 2,011,950 | $168.0M | 0.09% | +109,332+5.7% | Added |
| Price T Rowe Associates Inc | 1,900,611 | $158.7M | 0.02% | +269,921+16.6% | Added |
| Ra Capital Management, L.P. | 1,851,479 | $154.6M | 1.78% | +247,465+15.4% | Added |
| State Street Corp | 1,544,939 | $129.0M | 0.01% | −210,725−12.0% | Reduced |
| Cormorant Asset Management, LP | 1,250,000 | $104.4M | 5.54% | −275,000−18.0% | Reduced |
| Geode Capital Management, LLC | 974,967 | $81.4M | 0.01% | +39,781+4.3% | Added |
| T. Rowe Price Investment Management, Inc. | 944,638 | $78.9M | 0.05% | −229,153−19.5% | Reduced |
| Lord, Abbett & Co. LLC | 891,848 | $74.5M | 0.24% | +18,004+2.1% | Added |
| Morgan Stanley | 757,152 | $63.2M | 0.00% | +212,075+38.9% | Added |
| Suvretta Capital Management, LLC | 689,950 | $57.6M | 2.07% | −826,304−54.5% | Reduced |
| Vestal Point Capital, LP | 675,000 | $56.4M | 4.45% | 00.0% | Unchanged |
| Deutsche Bank AG | 465,690 | $38.9M | 0.02% | +19,160+4.3% | Added |
| Affinity Asset Advisors, LLC | 400,000 | $33.4M | 5.18% | −60,000−13.0% | Reduced |
| Northern Trust Corp | 384,108 | $32.1M | 0.01% | +33,528+9.6% | Added |
| Samsara BioCapital, LLC | 353,641 | $29.5M | 5.68% | −100,000−22.0% | Reduced |
| Bamco Inc | 342,832 | $28.6M | 0.08% | +720.0% | Added |
| Charles Schwab Investment Management Inc | 328,093 | $27.4M | 0.01% | +14,200+4.5% | Added |
| Russell Investments Group, Ltd. | 320,670 | $26.8M | 0.04% | +85,079+36.1% | Added |
| Goldman Sachs Group Inc | 299,259 | $25.0M | 0.00% | +41,092+15.9% | Added |
| Adage Capital Partners GP, L.L.C. | 292,009 | $24.4M | 0.04% | −31,459−9.7% | Reduced |
| UBS Asset Management Americas Inc | 282,855 | $23.6M | 0.01% | −27,527−8.9% | Reduced |
| Integral Health Asset Management, LLC | 275,000 | $23.0M | 2.70% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 250,123 | $20.9M | 0.00% | −11,236−4.3% | Reduced |
| Candriam Luxembourg S.C.A. | 240,363 | $20.1M | 0.12% | +23,355+10.8% | Added |
| Victory Capital Management Inc | 227,419 | $19.0M | 0.02% | −56,453−19.9% | Reduced |
| Bank of America Corp | 220,352 | $18.4M | 0.00% | −83,054−27.4% | Reduced |
| First Turn Management, LLC | 214,298 | $17.9M | 2.83% | +214,298 | New |
| Voloridge Investment Management, LLC | 169,262 | $14.1M | 0.05% | −65,466−27.9% | Reduced |
| Eagle Asset Management Inc | 122,329 | $12.6M | 0.06% | −68,275−35.8% | Reduced |
| TD Asset Management Inc | 149,518 | $12.4M | 0.01% | +26,400+21.4% | Added |
| Voya Investment Management LLC | 146,648 | $12.2M | 0.01% | −71,639−32.8% | Reduced |
| Nuveen Asset Management, LLC | 120,896 | $10.1M | 0.00% | −1,015−0.8% | Reduced |
| Dimensional Fund Advisors LP | 119,075 | $9.94M | 0.00% | +119,075 | New |
| Bank of New York Mellon Corp | 117,059 | $9.78M | 0.00% | −30,139−20.5% | Reduced |
| Woodline Partners LP | 110,989 | $9.27M | 0.08% | +3,290+3.1% | Added |
| Great Point Partners LLC | 100,000 | $8.35M | 2.52% | −392,000−79.7% | Reduced |
| Susquehanna International Group, LLP | 95,868 | $8.01M | 0.01% | +56,715+144.9% | Added |
| Soleus Capital Management, L.P. | 93,031 | $7.77M | 0.65% | −77,710−45.5% | Reduced |
| Cutter Capital Management, LP | 89,863 | $7.50M | 2.22% | −97,137−51.9% | Reduced |
| Barclays PLC | 85,322 | $7.13M | 0.00% | +47,852+127.7% | Added |
| Manufacturers Life Insurance Company, The | 84,839 | $7.08M | 0.01% | +11,507+15.7% | Added |
| Jacobs Levy Equity Management, Inc | 79,936 | $6.68M | 0.03% | +32,119+67.2% | Added |
| Duquesne Family Office LLCSuperinvestorDuquesne Family Office | 74,100 | $6.19M | 0.22% | 00.0% | Unchanged |
| Parkman Healthcare Partners LLC | 66,492 | $5.55M | 0.71% | −90,351−57.6% | Reduced |
| Federated Hermes, Inc. | 64,664 | $5.40M | 0.01% | +58,931+1,027.9% | Added |
| Swiss National Bank | 62,900 | $5.25M | 0.00% | 00.0% | Unchanged |
| Acuta Capital Partners, LLC | 62,100 | $5.19M | 4.20% | +19,900+47.2% | Added |
| PFM Health Sciences, LP | 60,602 | $5.06M | 0.29% | −251,378−80.6% | Reduced |
| StemPoint Capital LP | 60,076 | $5.02M | 1.50% | −220,633−78.6% | Reduced |
| Franklin Resources Inc | 56,753 | $4.93M | 0.00% | +52+0.1% | Added |
| Rhumbline Advisers | 58,778 | $4.91M | 0.00% | −1,792−3.0% | Reduced |
| Alliancebernstein L.P. | 57,431 | $4.80M | 0.00% | +1,620+2.9% | Added |
| UBS Group AG | 57,363 | $4.79M | 0.00% | −6,214−9.8% | Reduced |
| Rafferty Asset Management, LLC | 55,744 | $4.66M | 0.02% | −30,068−35.0% | Reduced |
| HighVista Strategies LLC | 55,139 | $4.60M | 1.59% | +4,099+8.0% | Added |
| Jane Street Group, LLC | 54,918 | $4.59M | 0.01% | +2,903+5.6% | Added |
| Standard Life Aberdeen plc | 50,796 | $4.24M | 0.01% | +50,796 | New |
| Qube Research & Technologies Ltd | 50,251 | $4.20M | 0.01% | −94,385−65.3% | Reduced |
| Thrivent Financial for Lutherans | 48,240 | $4.03M | 0.01% | −15,785−24.7% | Reduced |
| Edmond de Rothschild Holding S.A. | 45,480 | $3.80M | 0.06% | +45,480 | New |
| Citigroup Inc | 43,154 | $3.60M | 0.00% | +21,262+97.1% | Added |
| Alps Advisors Inc | 40,988 | $3.42M | 0.02% | −734−1.8% | Reduced |
| Legal & General Group Plc | 40,702 | $3.40M | 0.00% | +5,297+15.0% | Added |
| HealthInvest Partners AB | 40,230 | $3.36M | 1.58% | +17,734+78.8% | Added |
| Caption Management, LLC | 37,580 | $3.14M | 0.34% | +37,580 | New |
| Nicholas Investment Partners, LP | 36,586 | $3.06M | 0.28% | +36,586 | New |
| First Trust Advisors LP | 35,857 | $2.99M | 0.00% | +18,963+112.2% | Added |
| Wexford Capital LP | 33,464 | $2.79M | 0.67% | −3,000−8.2% | Reduced |
| Rhenman & Partners Asset Management AB | 32,000 | $2.67M | 0.22% | +32,000 | New |
| California State Teachers Retirement System | 31,167 | $2.60M | 0.00% | −897−2.8% | Reduced |
| State of Wisconsin Investment Board | 30,240 | $2.53M | 0.01% | −8,925−22.8% | Reduced |
| Harbor Capital Advisors, Inc. | 27,896 | $2.33M | 0.10% | +7,534+37.0% | Added |
| Dark Forest Capital Management LP | 27,603 | $2.31M | 0.29% | +27,603 | New |
| Moody Aldrich Partners LLC | 26,805 | $2.24M | 0.41% | −532−1.9% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 25,774 | $2.15M | 0.00% | +3,019+13.3% | Added |
| DekaBank Deutsche Girozentrale | 30,000 | $2.11M | 0.00% | 00.0% | Unchanged |
| Two Sigma Investments, LP | 25,128 | $2.10M | 0.00% | −9,333−27.1% | Reduced |
| MetLife Investment Management | 24,981 | $2.09M | 0.01% | 00.0% | Unchanged |
| Corebridge Financial, Inc. | 23,047 | $1.92M | 0.01% | −142−0.6% | Reduced |
| Invesco Ltd. | 22,940 | $1.92M | 0.00% | +1,442+6.7% | Added |
| Congress Asset Management Co | 22,735 | $1.90M | 0.01% | −247−1.1% | Reduced |
| Martingale Asset Management L P | 21,184 | $1.77M | 0.04% | +992+4.9% | Added |
| Decheng Capital LLC | 21,177 | $1.77M | 0.42% | +20,000+1,699.2% | Added |
| Wellington Management Group LLP | 20,968 | $1.75M | 0.00% | +2,768+15.2% | Added |
| Erste Asset Management GmbH | 21,000 | $1.74M | 0.02% | 00.0% | Unchanged |
| Wells Fargo & Company | 19,636 | $1.64M | 0.00% | −359−1.8% | Reduced |
| New York State Common Retirement Fund | 18,828 | $1.57M | 0.00% | −71−0.4% | Reduced |
| Citadel Advisors LLC | 17,087 | $1.43M | 0.00% | +17,087 | New |
| AQR Capital Management LLC | 16,539 | $1.38M | 0.00% | −313−1.9% | Reduced |
| Gotham Asset Management, LLC | 13,001 | $1.09M | 0.01% | +3,551+37.6% | Added |
| FORA Capital, LLC | 12,935 | $1.08M | 0.13% | +12,935 | New |
| Handelsbanken Fonder AB | 12,600 | $1.05M | 0.00% | +2,300+22.3% | Added |
| HighTower Advisors, LLC | 12,485 | $1.04M | 0.00% | +40+0.3% | Added |