Axcelis Technologies Inc (ACLS) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

31,308,434Shares Outstanding

316,206Shares held by institutions

$31,146,291Value of institutional holdings

97.17%Institutional ownership %

4.67%Shares Changed QoQ

343No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Axcelis Technologies Inc (NASDAQ:ACLS) currently has 343 active institutional owners and shareholders as of today (December 2025), that have filed 13F forms with the Securities Exchange Commission (SEC).

These investors collectively held 97.2% of the company's total shares outstanding in December 2025, down from 97.3% in September 2025.
Institutional share ownership changed by 4.67% QoQ, while the number of institutional owners saw an increase of 6.19% YoY.
Among the 343 institutional holders of Axcelis Technologies, 176 added to their stakes while 108 trimmed their positions and 59 held steady.
The aggregate institutional position in Axcelis Technologies now stands at 30.42Mn shares as of December 2025, after investors increased their holdings (up by 1.36Mn shares quarter on quarter which is down 558.91K shares year over year).
As of December 31, 2025, BlackRock, Inc. held Axcelis Technologies's largest shareholding position with over 4.83Mn shares, representing 15.42% of total outstanding shares.
Among the most significant buyers of Axcelis Technologies during December 2025 were 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 stock in December 2025 included BANK OF AMERICA CORP /DE/ (292.11K), CITIGROUP INC (213.88K), JANUS HENDERSON GROUP PLC (193.64K), PRIMECAP MANAGEMENT CO/CA/ (168.73K), ROYAL BANK OF CANADA (165.02K).
The top 10 institutional holders of Axcelis Technologies for the quarter ending December 2025 included 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).

343 Institutional Holders

316,206 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	4,827,575	-36,598	-0.75%	$387,847,360.00
VANGUARD GROUP INC	31 Dec, 2025	4,122,529	-63,172	-1.51%	$331,203,980.00
VICTORY CAPITAL MANAGEMENT INC	31 Dec, 2025	1,807,404	835,242	85.92%	$145,206,837.00
REINHART PARTNERS, LLC.	31 Dec, 2025	1,589,898	-20,434	-1.27%	$127,733,577.00
AMERICAN CENTURY COMPANIES INC	31 Dec, 2025	1,233,646	-112,115	-8.33%	$99,111,119.00
STATE STREET CORP	31 Dec, 2025	1,186,227	-43,889	-3.57%	$95,301,477.00
BNP Paribas Asset Management Holding S.A.	31 Dec, 2025	1,091,094	160,732	17.28%	$87,659.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	917,747	-8,992	-0.97%	$73,741,718.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	841,040	71,428	9.28%	$67,570,348.00
PRIMECAP MANAGEMENT CO/CA/	31 Dec, 2025	664,942	-168,734	-20.24%	$53,421,440.00
GOLDMAN SACHS GROUP INC	31 Dec, 2025	629,814	135,039	27.29%	$50,599,257.00
FMR LLC	31 Dec, 2025	610,603	59,205	10.74%	$49,055,805.00
D. E. Shaw & Co., Inc.	31 Dec, 2025	470,285	315,947	204.71%	$37,782,697.00
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	31 Dec, 2025	431,195	4,082	0.96%	$34,642,206.00
LSV ASSET MANAGEMENT	31 Dec, 2025	429,500	114,600	36.39%	$34,506.00
Boston Trust Walden Corp	31 Dec, 2025	427,736	-32,551	-7.07%	$34,364,310.00
Boston Partners	31 Dec, 2025	422,435	-46,306	-9.88%	$35,065,691.00
NORTHERN TRUST CORP	31 Dec, 2025	405,146	-29,842	-6.86%	$32,549,430.00
JPMORGAN CHASE & CO	31 Dec, 2025	357,502	140,108	64.45%	$28,721,711.00
MORGAN STANLEY	31 Dec, 2025	350,220	-103,867	-22.87%	$28,136,779.00

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