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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.

Q3 2023 vs. Q2 2023

How the institutions holding Arcellx, Inc. changed between Q2 2023 and Q3 2023.

All holders in Q3 2023All holders in Q2 2023

13F holders of ACLX: Q2 2023 compared with Q3 2023
MeasureQ2 2023Of which not filed for Q3 2023Q3 2023Change
Holders1381136−1
Shares48.1M556.4K47.6M+58.8K (+0.1%)
Value$1.52B$17.6M$1.71B+$204.8M (+13.6%)

1 institution that held it in Q2 2023 haven't filed for Q3 2023 yet. Not filing isn't selling, so the changes leave them out.

New holders (17)

Institutions that held Arcellx, Inc. at the end of Q3 2023 but not at the end of Q2 2023.

Institutions new to ACLX in Q3 2023
InstitutionSharesValue% of portfolio
T. Rowe Price Investment Management, Inc.910,178$32.7M0.02%
Pictet Asset Management Holding SA388,120$13.9M0.02%
Caas Capital Management LP124,959$4.48M1.00%
Healthcare of Ontario Pension Plan Trust Fund64,000$2.30M0.01%
ExodusPoint Capital Management, LP37,952$1.36M0.02%
MYDA Advisors LLC25,000$897.0K0.34%
HRT Financial LP21,015$754.0K0.01%
Connor, Clark & Lunn Investment Management Ltd.19,364$694.8K0.00%
Gsa Capital Partners LLP18,304$657.0K0.06%
SG Americas Securities, LLC17,067$612.0K0.01%
Endurant Capital Management LP14,158$508.0K0.46%
Corton Capital Inc.7,533$270.3K0.14%
LPL Financial LLC6,783$243.4K0.00%
High Net Worth Advisory Group LLC6,500$233.2K0.09%
Bayesian Capital Management, LP6,100$218.9K0.02%
Comerica Bank119$4.27K0.00%
Simplex Trading, LLC9$00.00%

Sold out (18)

Institutions that held Arcellx, Inc. at the end of Q2 2023 and filed for Q3 2023 without it.

Not filed for Q3 2023 yet (1)

Institutions that held Arcellx, Inc. at the end of Q2 2023 and haven't filed a 13F for Q3 2023. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding ACLX in Q2 2023 that haven't filed for Q3 2023
InstitutionShares, Q2 2023Value, Q2 2023
Pictet Asset Management SA556,408$17.6M