Arcellx, Inc. (ACLX) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

56,587,167Shares Outstanding

71,202,697Shares held by institutions

$8,191,514,276Value of institutional holdings

125.83%Institutional ownership %

18.06%Shares Changed QoQ

214No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Arcellx, Inc. (NASDAQ:ACLX) appears in 214 institutional 13F filings for the quarter ending December 2025.

Collectively, these holders controlled 124.6% of Arcellx's outstanding shares in December 2025, up from 113.3% in September 2025.
They increased total shares held in Arcellx by 17.33% from the prior quarter, while the number of investors in ACLX increased 2.39% year over year.
Of these 214 funds, 113 grew their exposure to Arcellx, 69 cut back, and 32 maintained positions.
Institutional investors collectively held 70.53Mn shares in Arcellx as of December 2025, up by 10.42Mn shares quarter on quarter, and up 10.06Mn shares year over year.
T. Rowe Price Investment Management, Inc. is the top holder of Arcellx as of December 31, 2025, with 16.21Mn shares representing 28.65% of outstanding stock.
Top purchasers of ACLX stock for the quarter ending December 2025 included T. Rowe Price Investment Management, Inc. (9.86Mn), Vestal Point Capital, LP (1.67Mn), Paradigm Biocapital Advisors LP (1.08Mn), Goldman Sachs Group Inc (888.52K), Woodline Partners LP (496.44K).
The largest sellers of Arcellx for the quarter ending December 2025 were FMR LLC (2.2Mn), RA CAPITAL MANAGEMENT, L.P. (1.77Mn), PERCEPTIVE ADVISORS LLC (1.0Mn), AJU IB Investment Co., Ltd. (824.07K), Schonfeld Strategic Advisors LLC (401.18K).
Per Business Quant, the top 10 investors in ACLX for the quarter ending December 2025 include T. Rowe Price Investment Management, Inc. (16.21Mn), Gilead Sciences, Inc. (6.72Mn), Paradigm Biocapital Advisors LP (5.72Mn), VANGUARD GROUP INC (4.08Mn), FMR LLC (3.56Mn), BlackRock, Inc. (3.55Mn), NEA Management Company, LLC (3.05Mn), Vestal Point Capital, LP (2.92Mn), SR ONE CAPITAL MANAGEMENT, LP (2.35Mn), State Street Corp (2.0Mn).

214 Institutional Holders

71,202,697 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
T. Rowe Price Investment Management, Inc.	31 Dec, 2025	16,213,948	9,861,592	155.24%	$1,057,150.00
Gilead Sciences, Inc.	31 Dec, 2025	6,720,803	0	0.00%	$438,196,356.00
Paradigm Biocapital Advisors LP	31 Dec, 2025	5,724,016	1,075,000	23.12%	$373,205,843.00
VANGUARD GROUP INC	31 Dec, 2025	4,081,519	174,432	4.46%	$266,115,040.00
FMR LLC	31 Dec, 2025	3,563,728	-2,197,589	-38.14%	$232,355,097.00
BlackRock, Inc.	31 Dec, 2025	3,548,787	160,891	4.75%	$231,380,928.00
NEA Management Company, LLC	31 Dec, 2025	3,045,262	0	0.00%	$198,551,082.00
Vestal Point Capital, LP	31 Dec, 2025	2,925,000	1,675,000	134.00%	$190,710,000.00
SR ONE CAPITAL MANAGEMENT, LP	31 Dec, 2025	2,346,630	0	0.00%	$153,000,276.00
State Street Corp	31 Dec, 2025	1,998,503	472,476	30.96%	$130,302,396.00
CITADEL ADVISORS LLC	31 Dec, 2025	1,500,223	478,770	46.87%	$97,814,539.00
PERCEPTIVE ADVISORS LLC	31 Dec, 2025	1,466,071	-1,002,282	-40.61%	$95,587,829.00
Jpmorgan Chase & Co	31 Dec, 2025	1,454,477	-310,529	-17.59%	$94,831,912.00
Goldman Sachs Group Inc	31 Dec, 2025	1,336,960	888,519	198.14%	$87,169,792.00
RA CAPITAL MANAGEMENT, L.P.	31 Dec, 2025	1,267,156	-1,769,371	-58.27%	$82,618,571.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	958,057	31,753	3.43%	$62,478,756.00
Janus Henderson Group Plc	31 Dec, 2025	919,578	-94,343	-9.30%	$59,957,552.00
Woodline Partners LP	31 Dec, 2025	737,824	496,435	205.66%	$48,106,125.00
BAMCO INC /NY/	31 Dec, 2025	609,697	59,461	10.81%	$39,752,244.00
Affinity Asset Advisors, LLC	31 Dec, 2025	523,725	23,725	4.75%	$34,146,870.00

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