ACLSAxcelis Technologies, Inc.

$120.30

Who owns ACLS

368 institutions reported holding ACLS for 2026Q1, together 105% of the company, more than the 361 a quarter earlier.

368

Institutions reporting a position · as of 2026Q1 · up from 361 the quarter before

Shares held by institutions
32.5M

Shares held by institutions · 105% of the company · long US equity positions only, as reported on Form 13F

Reported value
$3.03B

Reported value · at 2026-03-31 prices, not today's

Top 5 holders
47%

Top 5 holders · of the whole company, between five filers

Details
Reporting quarter2026-03-31
2026Q1
Quarters on record
52
New positions
63
Positions exited
60
Added to
90
Reduced
124
Top 10 holdersof the company
64%
Institutional ownership by quarter, 2013Q2 to 2026Q1
QuarterFilersSharesReported value
2026Q136832.5M$3.03B
2025Q436131.3M$2.52B
2025Q335430.3M$2.95B
2025Q232231.4M$2.19B
2025Q129831.1M$1.54B
2024Q432030.9M$2.16B
2024Q336330.2M$3.16B
2024Q239030.6M$4.35B
2024Q138230.2M$3.37B
2023Q441729.4M$3.81B
2023Q341629.6M$4.83B
2023Q240229.5M$5.41B
2023Q137429.1M$3.85B
2022Q432429.3M$2.31B
2022Q328628.4M$1.72B
2022Q227427.6M$1.51B
Largest reported holders, 2026Q1
HolderShares% of companyValue
BlackRock Inc.4.9M16%$460M
VANGUARD GROUP INC4.1M13%$384M
FMR LLC2.4M7.8%$226M
REINHART PARTNERS, LLC.1.7M5.4%$154M
Balyasny Asset Management L.P.1.4M4.4%$127M
VICTORY CAPITAL MANAGEMENT INC1.3M4.1%$119M
STATE STREET CORP1.2M3.8%$111M
BNP PARIBAS ASSET MANAGEMENT Holding S.A.1.0M3.2%$94M
AMERICAN CENTURY COMPANIES INC1.0M3.1%$89M
DIMENSIONAL FUND ADVISORS LP0.8M2.7%$79M

SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold.

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