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 2024
Institutional positions in Arcellx, Inc. as of Mar 31, 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
- 183
- +28 vs. Q4 2023
- Shares held
- 47.0M
- +337.3K (+0.7%) vs. Q4 2023
- Total value
- $3.27B
- +$678.4M (+26.2%) vs. Q4 2023
- New holders
- 42
- 69 more added
- Sold out
- 14
- 58 more reduced
1 institution that held it in Q4 2023 haven't filed for Q1 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2023: 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 2024
Shares, value and share of portfolio for each institution holding Arcellx, Inc.; share changes are against Q4 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 5,394,495 | $375.2M | 0.03% | +1,015,326+23.2% | Added |
| Perceptive Advisors LLC | 3,933,556 | $273.6M | 4.82% | −611,253−13.4% | Reduced |
| Paradigm Biocapital Advisors LP | 3,818,095 | $265.5M | 9.35% | +159,471+4.4% | Added |
| NEA Management Company, LLC | 3,745,262 | $260.5M | 16.17% | 00.0% | Unchanged |
| BlackRock Inc. | 3,066,068 | $213.2M | 0.00% | +47,530+1.6% | Added |
| Sr One Capital Management, LP | 2,346,630 | $163.2M | 44.83% | −800,000−25.4% | Reduced |
| Vanguard Group Inc | 2,228,856 | $155.0M | 0.00% | +167,037+8.1% | Added |
| State Street Corp | 1,885,118 | $131.1M | 0.01% | +111,279+6.3% | Added |
| Cormorant Asset Management, LP | 1,780,000 | $123.8M | 5.45% | +80,000+4.7% | Added |
| Suvretta Capital Management, LLC | 1,562,354 | $108.7M | 4.58% | −873,620−35.9% | Reduced |
| Janus Henderson Group PLC | 1,522,309 | $105.9M | 0.06% | −15,901−1.0% | Reduced |
| Price T Rowe Associates Inc | 1,344,553 | $93.5M | 0.01% | +84,373+6.7% | Added |
| Lord, Abbett & Co. LLC | 1,198,117 | $83.3M | 0.27% | +1,550+0.1% | Added |
| T. Rowe Price Investment Management, Inc. | 982,862 | $68.4M | 0.04% | +60,463+6.6% | Added |
| Geode Capital Management, LLC | 838,469 | $58.3M | 0.01% | +53,067+6.8% | Added |
| Morgan Stanley | 696,762 | $48.5M | 0.00% | +23,477+3.5% | Added |
| JPMorgan Chase & Co | 551,750 | $38.4M | 0.00% | −50,163−8.3% | Reduced |
| Samsara BioCapital, LLC | 453,641 | $31.6M | 4.88% | −6,800−1.5% | Reduced |
| Deutsche Bank AG | 447,783 | $31.1M | 0.01% | +308,596+221.7% | Added |
| Bank of America Corp | 414,541 | $28.8M | 0.00% | +220,254+113.4% | Added |
| Voya Investment Management LLC | 382,558 | $26.6M | 0.03% | +301,086+369.6% | Added |
| Voloridge Investment Management, LLC | 363,093 | $25.3M | 0.09% | +127,333+54.0% | Added |
| Northern Trust Corp | 359,460 | $25.0M | 0.00% | −3,961−1.1% | Reduced |
| PFM Health Sciences, LP | 303,210 | $21.1M | 1.05% | −31,988−9.5% | Reduced |
| Affinity Asset Advisors, LLC | 300,000 | $20.9M | 3.39% | −40,000−11.8% | Reduced |
| Great Point Partners LLC | 300,000 | $20.9M | 3.25% | +251,736+521.6% | Added |
| Charles Schwab Investment Management Inc | 282,010 | $19.6M | 0.00% | +17,832+6.7% | Added |
| Goldman Sachs Group Inc | 272,793 | $19.0M | 0.00% | −82,900−23.3% | Reduced |
| Adage Capital Partners GP, L.L.C. | 272,009 | $18.9M | 0.04% | −60,895−18.3% | Reduced |
| UBS Asset Management Americas Inc | 265,410 | $18.5M | 0.01% | +135,274+103.9% | Added |
| Integral Health Asset Management, LLC | 255,000 | $17.7M | 1.74% | +95,000+59.4% | Added |
| Bamco Inc | 248,993 | $17.3M | 0.05% | +185,493+292.1% | Added |
| Victory Capital Management Inc | 235,866 | $16.4M | 0.02% | +80,214+51.5% | Added |
| Federated Hermes, Inc. | 231,661 | $16.1M | 0.04% | +17,062+8.0% | Added |
| Candriam Luxembourg S.C.A. | 220,008 | $15.3M | 0.10% | −62,005−22.0% | Reduced |
| Eagle Asset Management Inc | 224,534 | $15.0M | 0.08% | +224,534 | New |
| Russell Investments Group, Ltd. | 195,437 | $13.6M | 0.02% | +5,895+3.1% | Added |
| Two Sigma Investments, LP | 188,854 | $13.1M | 0.03% | +43,580+30.0% | Added |
| Nuveen Asset Management, LLC | 186,783 | $13.0M | 0.00% | −92,843−33.2% | Reduced |
| Parkman Healthcare Partners LLC | 156,598 | $10.9M | 1.34% | −11,664−6.9% | Reduced |
| Soleus Capital Management, L.P. | 150,000 | $10.4M | 0.92% | −9,000−5.7% | Reduced |
| StemPoint Capital LP | 140,267 | $9.76M | 2.61% | −173,337−55.3% | Reduced |
| Rafferty Asset Management, LLC | 126,751 | $8.82M | 0.03% | +14,799+13.2% | Added |
| Bank of New York Mellon Corp | 121,064 | $8.42M | 0.00% | −10,870−8.2% | Reduced |
| Squarepoint Ops LLC | 121,011 | $8.42M | 0.03% | −8,145−6.3% | Reduced |
| Citigroup Inc | 114,947 | $7.99M | 0.01% | +62,616+119.7% | Added |
| Cutter Capital Management, LP | 107,000 | $7.44M | 2.87% | +107,000 | New |
| Woodline Partners LP | 104,060 | $7.24M | 0.07% | 00.0% | Unchanged |
| UBS Group AG | 103,481 | $7.20M | 0.00% | +6,436+6.6% | Added |
| Qube Research & Technologies Ltd | 101,186 | $7.04M | 0.01% | +87,261+626.6% | Added |
| Vestal Point Capital, LP | 100,000 | $6.96M | 0.58% | +40,000+66.7% | Added |
| Walleye Capital LLC | 94,208 | $6.55M | 0.07% | −24,127−20.4% | Reduced |
| TD Asset Management Inc | 89,918 | $6.25M | 0.01% | +8,600+10.6% | Added |
| Citadel Advisors LLC | 77,730 | $5.41M | 0.01% | +54,534+235.1% | Added |
| Duquesne Family Office LLCSuperinvestorDuquesne Family Office | 74,100 | $5.15M | 0.14% | +74,100 | New |
| HighVista Strategies LLC | 72,230 | $5.02M | 1.79% | 00.0% | Unchanged |
| Thrivent Financial for Lutherans | 67,540 | $4.70M | 0.01% | +67,540 | New |
| EAM Investors, LLC | 66,052 | $4.59M | 0.72% | +1,000+1.5% | Added |
| Millennium Management LLC | 61,210 | $4.26M | 0.00% | +3,836+6.7% | Added |
| Cubist Systematic Strategies, LLC | 57,248 | $3.98M | 0.05% | −69,810−54.9% | Reduced |
| Swiss National Bank | 56,400 | $3.92M | 0.00% | −800−1.4% | Reduced |
| Franklin Resources Inc | 54,338 | $3.78M | 0.00% | +36,095+197.9% | Added |
| Rhumbline Advisers | 53,002 | $3.69M | 0.00% | +1,567+3.0% | Added |
| Schonfeld Strategic Advisors LLC | 52,924 | $3.68M | 0.03% | +12,414+30.6% | Added |
| Two Sigma Advisers, LP | 48,400 | $3.37M | 0.01% | +40,600+520.5% | Added |
| Manufacturers Life Insurance Company, The | 47,198 | $3.28M | 0.00% | +1,747+3.8% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 45,698 | $3.18M | 0.01% | +8,716+23.6% | Added |
| First Trust Advisors LP | 40,277 | $2.80M | 0.00% | +14,772+57.9% | Added |
| Barclays PLC | 39,703 | $2.76M | 0.00% | −89,723−69.3% | Reduced |
| Alliancebernstein L.P. | 39,580 | $2.75M | 0.00% | +2,580+7.0% | Added |
| Credit Suisse AG | 38,739 | $2.69M | 0.00% | +1,556+4.2% | Added |
| Alps Advisors Inc | 37,235 | $2.59M | 0.02% | +4,833+14.9% | Added |
| Jane Street Group, LLC | 36,857 | $2.56M | 0.00% | −47,534−56.3% | Reduced |
| Principal Financial Group Inc | 36,835 | $2.56M | 0.00% | +26,197+246.3% | Added |
| Susquehanna International Group, LLP | 36,575 | $2.54M | 0.00% | +13,494+58.5% | Added |
| MYDA Advisors LLC | 35,000 | $2.43M | 0.85% | −5,000−12.5% | Reduced |
| Acuta Capital Partners, LLC | 34,500 | $2.40M | 1.56% | −42,500−55.2% | Reduced |
| Twinbeech Capital LP | 30,444 | $2.12M | 0.04% | −33,020−52.0% | Reduced |
| DekaBank Deutsche Girozentrale | 30,000 | $2.11M | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 29,548 | $2.06M | 0.00% | −2,610−8.1% | Reduced |
| Legal & General Group Plc | 29,344 | $2.04M | 0.00% | −418−1.4% | Reduced |
| Algert Global LLC | 28,310 | $1.97M | 0.08% | +19,120+208.1% | Added |
| State of Wisconsin Investment Board | 26,626 | $1.85M | 0.00% | −4,755−15.2% | Reduced |
| D. E. Shaw & Co., Inc. | 25,286 | $1.76M | 0.00% | −41,788−62.3% | Reduced |
| Congress Asset Management Co | 23,228 | $1.62M | 0.01% | −1,831−7.3% | Reduced |
| Martingale Asset Management L P | 22,932 | $1.59M | 0.03% | −4,202−15.5% | Reduced |
| FORA Capital, LLC | 22,217 | $1.55M | 0.13% | 00.0% | Unchanged |
| Erste Asset Management GmbH | 21,000 | $1.48M | 0.02% | +21,000 | New |
| Moody Aldrich Partners LLC | 20,560 | $1.43M | 0.24% | +20,560 | New |
| Invesco Ltd. | 20,223 | $1.41M | 0.00% | −4,771−19.1% | Reduced |
| Profund Advisors LLC | 20,033 | $1.39M | 0.05% | +1,436+7.7% | Added |
| Allianz Asset Management GmbH | 19,900 | $1.38M | 0.00% | +4,100+25.9% | Added |
| MetLife Investment Management | 19,594 | $1.36M | 0.01% | −590−2.9% | Reduced |
| American International Group, Inc. | 18,904 | $1.31M | 0.00% | −162−0.8% | Reduced |
| Harbor Capital Advisors, Inc. | 18,794 | $1.31M | 0.17% | +18,794 | New |
| Wells Fargo & Company | 17,834 | $1.24M | 0.00% | +7,319+69.6% | Added |
| HealthInvest Partners AB | 17,496 | $1.22M | 0.74% | +6,096+53.5% | Added |
| Seven Eight Capital, LP | 17,351 | $1.21M | 0.13% | +17,351 | New |
| New York State Common Retirement Fund | 16,975 | $1.18M | 0.00% | +1,537+10.0% | Added |
| Norges Bank | 16,369 | $1.14M | 0.00% | +16,369 | New |