Axcelis Technologies Inc (ACLS) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

0Shares Outstanding

262,715Shares held by institutions

$23,780,962Value of institutional holdings

99.59%Institutional ownership %

-1.08%Shares Changed QoQ

328No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Axcelis Technologies Inc (NASDAQ:ACLS) has 360 institutional investors with active 13F positions as of December 2025.

Collectively, these holders controlled 98.8% of Axcelis Technologies's outstanding shares in December 2025, up from 98.8% in September 2025.
They increased total shares held in Axcelis Technologies by 3.12% from the prior quarter, while the number of investors in ACLS increased 11.8% year over year.
Activity in ACLS broke down as 182 buyers, 121 sellers, and 57 unchanged among 360 total holders.
Combined, these investors held 31.06Mn shares in ACLS for December 2025, up by 939.06K shares quarter on quarter, and down 661.54K shares year over year.
As of December 31, 2025, BlackRock, Inc. held the largest stake in Axcelis Technologies with 4.83Mn shares, accounting for 15.35% of total shares outstanding.
The most significant purchases of ACLS for the quarter ending December 2025 came from VICTORY CAPITAL MANAGEMENT INC (835.24K), D. E. Shaw & Co., Inc. (315.95K), BALYASNY ASSET MANAGEMENT L.P. (241.18K), BNP Paribas Asset Management Holding S.A. (160.73K), Allspring Global Investments Holdings, LLC (156.39K).
Leading sellers of Axcelis Technologies shares for the quarter ending December 2025 were Bank Of America Corp /De/ (702.42K), Citigroup Inc (213.88K), Janus Henderson Group Plc (193.64K), PRIMECAP MANAGEMENT CO/CA/ (168.73K), Royal Bank Of Canada (165.02K).
Per Business Quant data, the top 10 holders of Axcelis Technologies for the quarter ending December 2025 are BlackRock, Inc. (4.83Mn), VANGUARD GROUP INC (4.12Mn), VICTORY CAPITAL MANAGEMENT INC (1.81Mn), REINHART PARTNERS, LLC. (1.59Mn), AMERICAN CENTURY COMPANIES INC (1.23Mn), State Street Corp (1.19Mn), BNP Paribas Asset Management Holding S.A. (1.09Mn), GEODE CAPITAL MANAGEMENT, LLC (917.75K), DIMENSIONAL FUND ADVISORS LP (841.04K), PRIMECAP MANAGEMENT CO/CA/ (664.94K).

360 Institutional Holders

262,715 Total Shares Held

Rows:

Download Data

Owner Name	Date	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	-36,598	-0.75%	$0.00
VANGUARD GROUP INC	31 Dec, 2025	-63,172	-1.51%	$0.00
Allspring Global Investments Holdings, LLC	31 Dec, 2025	156,387	142.65%	$0.00
Barclays Plc	31 Dec, 2025	-61,714	-44.82%	$0.00
VICTORY CAPITAL MANAGEMENT INC	31 Dec, 2025	835,242	85.92%	$0.00
UBS Group AG	31 Dec, 2025	86,065	67.60%	$0.00
HSBC HOLDINGS PLC	31 Dec, 2025	3,747	18.05%	$0.00
REINHART PARTNERS, LLC.	31 Dec, 2025	-20,434	-1.27%	$0.00
Squarepoint Ops LLC	31 Dec, 2025	24,832	19.27%	$0.00
Rockefeller Capital Management L.P.	31 Dec, 2025	1,912	238.40%	$0.00
AMERICAN CENTURY COMPANIES INC	31 Dec, 2025	-112,115	-8.33%	$0.00
BlackBarn Capital Partners LP	31 Dec, 2025	-103,427	-51.71%	$0.00
State Street Corp	31 Dec, 2025	-43,889	-3.57%	$0.00
Nuveen, LLC	31 Dec, 2025	-2,889	-3.94%	$0.00
BNP Paribas Asset Management Holding S.A.	31 Dec, 2025	160,732	17.28%	$0.00
Susquehanna Portfolio Strategies, LLC	31 Dec, 2025	-2,873	-4.04%	$0.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	-8,992	-0.97%	$0.00
QSM Asset Management Ltd	31 Dec, 2025	0	0.00%	$0.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	71,428	9.28%	$0.00
Soviero Asset Management, LP	31 Dec, 2025	15,000	48.39%	$0.00

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