Arcellx, Inc.

ACLXDelisted Apr 28, 2026

Industry: Biological Products, (No Diagnostic Substances)
SEC CIK: 0001786205

SEC filings (opens in a new tab)

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.

Q4 2024 vs. Q3 2024

How the institutions holding Arcellx, Inc. changed between Q3 2024 and Q4 2024.

All holders in Q4 2024 All holders in Q3 2024

13F holders of ACLX: Q3 2024 compared with Q4 2024
Measure	Q3 2024	Of which not filed for Q4 2024	Q4 2024	Change
Holders	186	2	211	+27
Shares	49.5M	127.3K	59.2M	+9.81M (+19.9%)
Value	$4.13B	$13.0M	$4.54B	+$416.0M (+10.1%)

2 institutions that held it in Q3 2024 haven't filed for Q4 2024 yet. Not filing isn't selling, so the changes leave them out.

New holders (52)

Institutions that held Arcellx, Inc. at the end of Q4 2024 but not at the end of Q3 2024.

Institutions new to ACLX in Q4 2024
Institution	Shares	Value	% of portfolio
Gilead Sciences, Inc.	6,720,803	$515.4M	33.23%
AJU IB Investment Co., Ltd.	1,047,557	$80.3M	78.18%
Capital World Investors	252,878	$19.4M	0.00%
Artia Global Partners LP	229,785	$17.6M	7.11%
Raymond James Financial Inc	130,601	$10.0M	0.00%
Renaissance Technologies LLC	49,100	$3.77M	0.01%
EAM Investors, LLC	43,009	$3.30M	0.47%
Allostery Investments LP	35,000	$2.68M	5.27%
Schonfeld Strategic Advisors LLC	32,737	$2.51M	0.02%
American Century Companies Inc	29,446	$2.26M	0.00%
Norges Bank	27,251	$2.09M	0.00%
State of New Jersey Common Pension Fund D	23,966	$1.84M	0.01%
Millennium Management LLC	22,370	$1.72M	0.00%
BNP Paribas Arbitrage, SA	19,965	$1.53M	0.00%
Jackson Creek Investment Advisors LLC	15,389	$1.18M	0.36%
Walleye Capital LLC	10,659	$817.4K	0.01%
Scientech Research LLC	10,281	$788.5K	0.22%
Diadema Partners LP	10,100	$774.6K	0.87%
Police & Firemen's Retirement System of New Jersey	9,182	$704.2K	0.01%
Guggenheim Capital LLC	8,303	$636.8K	0.01%
Bryce Point Capital, LLC	7,475	$573.3K	0.17%
Tema ETFs LLC	7,468	$572.7K	0.24%
Verition Fund Management LLC	7,449	$571.3K	0.00%
Trexquant Investment LP	7,237	$555.0K	0.01%
Fieldview Capital Management, LLC	7,237	$555.0K	0.09%
Algert Global LLC	6,844	$524.9K	0.01%
KLP Kapitalforvaltning AS	6,600	$506.2K	0.00%
Brevan Howard Capital Management LP	6,079	$466.2K	0.01%
Squarepoint Ops LLC	5,330	$408.8K	0.00%
Jump Financial, LLC	4,359	$334.3K	0.01%
Creative Planning	4,193	$321.6K	0.00%
SBI Securities Co., Ltd.	4,123	$316.2K	0.01%
CIBC World Markets Corp	4,033	$309.3K	0.00%
Sherbrooke Park Advisers LLC	3,805	$291.8K	0.09%
Mercer Global Advisors Inc	3,619	$277.5K	0.00%
Landscape Capital Management, L.L.C.	2,793	$214.2K	0.02%
Kazazian Asset Management, LLC	2,660	$204.0K	0.16%
Avanza Fonder AB	2,398	$183.9K	0.01%
GF Fund Management Co. Ltd.	1,135	$87.0K	0.00%
Headlands Technologies LLC	529	$40.6K	0.00%
Caitong International Asset Management Co., Ltd	239	$18.3K	0.02%
Meeder Asset Management Inc	45	$3.45K	0.00%
Aventura Private Wealth, LLC	45	$3.45K	0.00%
EverSource Wealth Advisors, LLC	21	$1.61K	0.00%
CoreCap Advisors, LLC	19	$1.46K	0.00%
SRS Capital Advisors, Inc.	14	$1.07K	0.00%
Assetmark, Inc	10	$767	0.00%
Signaturefd, LLC	8	$614	0.00%
Lindbrook Capital, LLC	7	$537	0.00%
Skopos Labs, Inc.	7	$537	0.00%
IFP Advisors, Inc	2	$307	0.00%
Quantbot Technologies LP	1	$77	0.00%

Sold out (25)

Institutions that held Arcellx, Inc. at the end of Q3 2024 and filed for Q4 2024 without it.

Institutions that sold out of ACLX in Q4 2024
Institution	Shares, Q3 2024	Value, Q3 2024
Suvretta Capital Management, LLC	689,950	$57.6M
Adage Capital Partners GP, L.L.C.	292,009	$24.4M
Great Point Partners LLC	100,000	$8.35M
Cutter Capital Management, LP	89,863	$7.50M
StemPoint Capital LP	60,076	$5.02M
Jane Street Group, LLC	54,918	$4.59M
Standard Life Aberdeen plc	50,796	$4.24M
Alps Advisors Inc	40,988	$3.42M
Caption Management, LLC	37,580	$3.14M
SG Americas Securities, LLC	12,035	$1.00M
MYDA Advisors LLC	10,000	$835.1K
D. E. Shaw & Co., Inc.	6,305	$526.5K
GTS Securities LLC	4,739	$395.8K
Tudor Investment Corp Et Al	4,409	$368.2K
Group One Trading, L.P.	3,709	$309.7K
Glenmede Trust Co NA	3,615	$301.9K
Entropy Technologies, LP	3,509	$293.0K
Nomura Holdings Inc	3,197	$267.0K
Acadian Asset Management LLC	2,953	$246.0K
EntryPoint Capital, LLC	2,501	$208.9K
Torno Capital, LLC	2,000	$167.0K
Quest Partners LLC	1,532	$127.9K
Quarry LP	1,500	$125.3K
Catalyst Funds Management Pty Ltd	400	$33.4K
Global Retirement Partners, LLC	12	$1.00K

Not filed for Q4 2024 yet (2)

Institutions that held Arcellx, Inc. at the end of Q3 2024 and haven't filed a 13F for Q4 2024. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding ACLX in Q3 2024 that haven't filed for Q4 2024
Institution	Shares, Q3 2024	Value, Q3 2024
Eagle Asset Management Inc	122,329	$12.6M
Raymond James & Associates	4,992	$416.9K