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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.

13F holders, Q1 2025

Institutional positions in Arcellx, Inc. as of Mar 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
198
−12 vs. Q4 2024
Shares held
61.6M
+2.52M (+4.3%) vs. Q4 2024
Total value
$4.04B
−$486.0M (−10.7%) vs. Q4 2024
New holders
25
74 more added
Sold out
37
70 more reduced

1 institution that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 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.

Institutional holdersQ1 2025: 198 institutions
Q1 2021: 0 institutionsQ2 2021: 0 institutionsQ3 2021: 0 institutionsQ4 2021: 0 institutionsQ1 2022: 49 institutionsQ2 2022: 68 institutionsQ3 2022: 74 institutionsQ4 2022: 125 institutionsQ1 2023: 117 institutionsQ2 2023: 138 institutionsQ3 2023: 136 institutionsQ4 2023: 156 institutionsQ1 2024: 183 institutionsQ2 2024: 167 institutionsQ3 2024: 186 institutionsQ4 2024: 211 institutionsQ1 2025: 198 institutionsQ2 2025: 203 institutionsQ3 2025: 209 institutionsQ4 2025: 218 institutionsQ1 2026: 240 institutionsQ2 2026: 2 institutions
Value heldQ1 2025: $4.04B
Q1 2021: $0Q2 2021: $0Q3 2021: $0Q4 2021: $0Q1 2022: $357.9MQ2 2022: $621.5MQ3 2022: $781.8MQ4 2022: $1.30BQ1 2023: $1.40BQ2 2023: $1.52BQ3 2023: $1.71BQ4 2023: $2.59BQ1 2024: $3.27BQ2 2024: $2.77BQ3 2024: $4.13BQ4 2024: $4.54BQ1 2025: $4.04BQ2 2025: $4.01BQ3 2025: $5.18BQ4 2025: $4.34BQ1 2026: $6.52BQ2 2026: $3.43M
Institutions holding ACLX and their total value by quarter
QuarterHoldersValue
Q2 20262$3.43M
Q1 2026240$6.52B
Q4 2025218$4.34B
Q3 2025209$5.18B
Q2 2025203$4.01B
Q1 2025198$4.04B
Q4 2024211$4.54B
Q3 2024186$4.13B
Q2 2024167$2.77B
Q1 2024183$3.27B
Q4 2023156$2.59B
Q3 2023136$1.71B
Q2 2023138$1.52B
Q1 2023117$1.40B
Q4 2022125$1.30B
Q3 202274$781.8M
Q2 202268$621.5M
Q1 202249$357.9M
Q4 20210$0
Q3 20210$0
Q2 20210$0
Q1 20210$0

Institutions, Q1 2025

Shares, value and share of portfolio for each institution holding Arcellx, Inc.; share changes are against Q4 2024.

Institutions holding ACLX in Q1 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Jacobs Levy Equity Management, Inc0$00.00%−78,584−100.0%Sold out
Duquesne Family Office LLCSuperinvestorDuquesne Family Office0$00.00%−74,100−100.0%Sold out
Thrivent Financial for Lutherans0$00.00%−69,461−100.0%Sold out
Nicholas Investment Partners, LP0$00.00%−48,086−100.0%Sold out
EAM Investors, LLC0$00.00%−43,009−100.0%Sold out
State of New Jersey Common Pension Fund D0$00.00%−23,966−100.0%Sold out
Jackson Creek Investment Advisors LLC0$00.00%−15,389−100.0%Sold out
Acuta Capital Partners, LLC0$00.00%−10,743−100.0%Sold out
Moody Aldrich Partners LLC0$00.00%−10,683−100.0%Sold out
Walleye Capital LLC0$00.00%−10,659−100.0%Sold out
Scientech Research LLC0$00.00%−10,281−100.0%Sold out
Diadema Partners LP0$00.00%−10,100−100.0%Sold out
SEI Investments Co0$00.00%−9,688−100.0%Sold out
Y-Intercept (Hong Kong) Ltd0$00.00%−7,735−100.0%Sold out
Bryce Point Capital, LLC0$00.00%−7,475−100.0%Sold out
Trexquant Investment LP0$00.00%−7,237−100.0%Sold out
Fieldview Capital Management, LLC0$00.00%−7,237−100.0%Sold out
Algert Global LLC0$00.00%−6,844−100.0%Sold out
Brevan Howard Capital Management LP0$00.00%−6,079−100.0%Sold out
Legato Capital Management LLC0$00.00%−5,999−100.0%Sold out
Two Sigma Advisers, LP0$00.00%−5,600−100.0%Sold out
Squarepoint Ops LLC0$00.00%−5,330−100.0%Sold out
Jump Financial, LLC0$00.00%−4,359−100.0%Sold out
FORA Capital, LLC0$00.00%−4,064−100.0%Sold out
Sherbrooke Park Advisers LLC0$00.00%−3,805−100.0%Sold out
Mackenzie Financial Corp0$00.00%−3,301−100.0%Sold out
Advisory Alpha, LLC0$00.00%−3,000−100.0%Sold out
Landscape Capital Management, L.L.C.0$00.00%−2,793−100.0%Sold out
Envestnet Asset Management Inc0$00.00%−2,747−100.0%Sold out
Kazazian Asset Management, LLC0$00.00%−2,660−100.0%Sold out
Virtus ETF Advisers LLC0$00.00%−852−100.0%Sold out
Headlands Technologies LLC0$00.00%−529−100.0%Sold out
Meeder Asset Management Inc0$00.00%−45−100.0%Sold out
CoreCap Advisors, LLC0$00.00%−19−100.0%Sold out
Quantbot Technologies LP0$00.00%−1−100.0%Sold out
Nuveen Asset Management, LLC––––Not filed