Who Owns Axcelis Technologies, Inc. (ACLS)?Hedge Fund & Institutional Holders

$83.37-1.81 (-2.13%)TechnologyNASDAQ

Institutional Holders

50

as of Q4 2025

Total Institutional Value

$3.11574273000145e+235T

% of Float Held

1.2700899293565313e+299%

QoQ Change in Holders

+14 / -0

Price History

$42.42$58.83$75.23$91.64$108.05Sep 24Jun 25Mar 26

ACLS — Biggest New Institutional Buyers This Quarter

FundActionShares AddedValue Added
REINHART PARTNERS, LLC.New Position+1.6M+$127.7M
Boston Trust Walden CorpNew Position+428K+$34.4M
Allspring Global Investments Holdings, LLCNew Position+266K+$22.9M
FEDERATED HERMES, INC.New Position+276K+$21.0M
PRINCIPAL FINANCIAL GROUP INCNew Position+200K+$16.1M
Bank of New York Mellon CorpNew Position+204K+$14.0M
NORGES BANKNew Position+88K+$7.0M
RENAISSANCE TECHNOLOGIES LLCNew Position+67K+$5.0M
QSM Asset Management LtdNew Position+53K+$4.3M
ENVESTNET ASSET MANAGEMENT INCNew Position+52K+$4.0M
LSV ASSET MANAGEMENTIncreased+115K+$3.8M
HARBOR CAPITAL ADVISORS, INC.New Position+45K+$3.6M
BESSEMER GROUP INCNew Position+38K+$3.0M
BRIDGES INVESTMENT MANAGEMENT INCNew Position+28K+$2.0M
BURNEY CO/New Position+25K+$2.0M

ACLS — Institutions Reducing or Closing Positions

FundActionShares SoldValue Sold
BlackRock, Inc.Decreased-37K-$474.6B
VANGUARD GROUP INCDecreased-63K-$408.4B
AMERICAN CENTURY COMPANIES INCDecreased-112K-$131.3B
STATE STREET CORPDecreased-44K-$120.0B
GEODE CAPITAL MANAGEMENT, LLCDecreased-9K-$90.4B
PRIMECAP MANAGEMENT CO/CA/Decreased-169K-$81.3B
Boston PartnersDecreased-46K-$44.9B
MORGAN STANLEYDecreased-104K-$44.3B
Grantham, Mayo, Van Otterloo & Co. LLCDecreased-121K-$43.3B
NORTHERN TRUST CORPDecreased-30K-$42.4B
BANK OF AMERICA CORP /DE/Decreased-292K-$40.1B
CITIGROUP INCDecreased-214K-$31.7B
BNP PARIBAS FINANCIAL MARKETSDecreased-120K-$27.7B
MILLENNIUM MANAGEMENT LLCDecreased-132K-$25.5B
JANUS HENDERSON GROUP PLCDecreased-194K-$23.0B

Top Institutional Holders(Q4 2025)

#FundSharesValue% of PortfolioType
1VANGUARD GROUP INC3,878,195$311.6M0.00%Share
2BlackRock, Inc.3,405,725$273.0M0.00%Share
3VICTORY CAPITAL MANAGEMENT INC1,807,404$145.0M0.08%Share
4REINHART PARTNERS, LLC.1,589,898$127.7M3.83%Share
5AMERICAN CENTURY COMPANIES INC1,233,646$99.0M0.05%Share
6STATE STREET CORP1,186,227$95.0M0.00%Share
7BNP Paribas Asset Management Holding S.A.1,041,032$83.0M0.10%Share
8BlackRock, Inc.943,730$75.0M0.00%Share
9GEODE CAPITAL MANAGEMENT, LLC816,603$65.0M0.00%Share
10DIMENSIONAL FUND ADVISORS LP794,948$63.0M0.01%Share
11PRIMECAP MANAGEMENT CO/CA/664,942$53.4M0.04%Share
12FMR LLC545,902$43.0M0.00%Share
13D. E. Shaw & Co., Inc.460,057$36.0M0.02%Share
14Invesco Ltd.447,947$36.0M0.01%Share
15LSV ASSET MANAGEMENT429,500$34.5M0.08%Share
16CHARLES SCHWAB INVESTMENT MANAGEMENT INC431,195$34.0M0.01%Share
17PRICE T ROWE ASSOCIATES INC /MD/353,636$28.0M0.00%Share
18NORTHERN TRUST CORP350,579$28.0M0.00%Share
19GOLDMAN SACHS GROUP INC334,780$26.0M0.00%Share
20Grantham, Mayo, Van Otterloo & Co. LLC322,849$25.0M0.06%Share
21JPMORGAN CHASE & CO305,136$24.0M0.00%Share
22GOLDMAN SACHS GROUP INC295,034$23.0M0.00%Share
23Allspring Global Investments Holdings, LLC265,576$22.9M0.04%Share
24Boston Trust Walden Corp267,436$21.5M0.16%Share
25FEDERATED HERMES, INC.269,826$21.0M0.04%Share
26BALYASNY ASSET MANAGEMENT L.P.243,202$19.0M0.02%Share
27NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO116,997$17.7M0.01%Share
28VOLORIDGE INVESTMENT MANAGEMENT, LLC220,713$17.0M0.06%Share
29ARROWSTREET CAPITAL, LIMITED PARTNERSHIP212,050$17.0M0.01%Share
30KENNEDY CAPITAL MANAGEMENT LLC205,737$16.5M0.35%Share
31PRINCIPAL FINANCIAL GROUP INC198,651$16.0M0.01%Share
32VANGUARD GROUP INC198,613$16.0M0.00%Share
33MORGAN STANLEY171,511$13.0M0.00%Share
34BNP PARIBAS FINANCIAL MARKETS164,027$13.0M0.01%Share
35Boston Trust Walden Corp160,300$12.9M0.10%Share
36UBS Group AG158,115$12.7M0.00%Share
37Squarepoint Ops LLC153,703$12.0M0.01%Share
38First Eagle Investment Management, LLC136,100$10.9M0.02%Share
39MILLENNIUM MANAGEMENT LLC130,090$10.0M0.00%Share
40CITADEL ADVISORS LLC136,795$10.0M0.00%Share
41PUBLIC SECTOR PENSION INVESTMENT BOARD129,777$10.0M0.03%Share
42ROYCE & ASSOCIATES LP116,375$9.3M0.09%Share
43SEGALL BRYANT & HAMILL, LLC102,187$8.2M0.11%Share
44Bank of New York Mellon Corp100,749$8.0M0.00%Share
45Clark Capital Management Group, Inc.110,294$8.0M0.05%Share
46CITIGROUP INC108,288$8.0M0.00%Share
47GEODE CAPITAL MANAGEMENT, LLC101,144$8.0M0.00%Share
48BlackRock, Inc.106,314$8.0M0.00%Share
49BlackBarn Capital Partners LP96,573$7.8M0.51%Share
50FIRST TRUST ADVISORS LP88,396$7.0M0.01%Share

ACLS Institutional Ownership History

QuarterHoldersTotal ValueChange
Q4 2025366$2.4B+117
Q3 2025249$2.4T-40
Q2 2025289$1.7T-14
Q1 2025303$1.4T+6
Q4 2024297$84.2T+15
Q3 2024282$2183.9T-26
Q2 2024308$2294.2T+19
Q1 2024289$1525.2T—

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As of Q4 2025, 50 institutional investors hold ACLS (Axcelis Technologies, Inc.). The largest holder is VANGUARD GROUP INC with $311.6M in shares. This quarter, 14 institutions opened new positions and 0 closed their positions.

Frequently Asked Questions

How many hedge funds own ACLS?

As of Q4 2025, 50 institutional investors report holding ACLS (Axcelis Technologies, Inc.) in their 13F filings.

Who is the largest institutional holder of ACLS?

The largest institutional holder of ACLS is VANGUARD GROUP INC with $311.6M in shares.

Is institutional ownership of ACLS increasing or decreasing?

This quarter, 14 institutions opened new positions in ACLS and 0 closed their positions.