AXCELIS TECHNOLOGIES INC

ACLSNASDAQ

$142.31-5.46 (-3.69%)as of Oct 5, 2026

Legend

Insider buy

Insider sell

Congress buy

Congress sell

Hedge Funds
bought vs soldGreener markers show more buyers; redder markers show more sellers.

Company share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size.

Insider buy
Insider sell
Congress buy
Congress sell
Hedge Funds bought vs sold

Share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size. Greener fund markers mean more buyers.

Insider Buy
Insider Sell
Congress Buy
Congress Sell
Hedge funds bought vs sold
BuybackNo changeNet dilution

AXCELIS TECHNOLOGIES INC price and activity chart data

Showing the 1Y range: Oct 6, 2025 to Oct 5, 2026. Price (+62.3%). 0 insider or congressional trades plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Largest institutional holders

13F · Q2 2026

Fund	% of company held	Value	% of portfolio	Quarterly activity
BlackRock, Inc.	16.29%	$953M	0.01%	Not reported
FMR LLC	13.36%	$782M	0.03%	Not reported
Vanguard Portfolio Management LLC	8.03%	$470M	0.02%	Not reported
Vanguard Capital Management LLC	4.49%	$263M	0.01%	Not reported
State Street Corp	3.99%	$233M	0.01%	Not reported
Victory Capital Management Inc	3.67%	$215M	0.12%	Not reported
Reinhart Partners, LLC.	3.01%	$176M	4.02%	Reduce 43.98%
Geode Capital Management, LLC	2.70%	$158M	0.01%	Not reported
BNP PARIBAS ASSET MANAGEMENT Holding S.A.	2.60%	$152M	0.15%	Reduce 20.17%
Dimensional Fund Advisors LP	2.30%	$134M	0.02%	Not reported
Balyasny Asset Management L.P.	2.00%	$117M	0.15%	Not reported
Primecap Management Co	1.98%	$116M	0.07%	Reduce 7.32%
Invesco Ltd.	1.71%	$100M	0.01%	Not reported
Charles Schwab Investment Management Inc	1.35%	$78.9M	0.01%	Not reported
Barrow Hanley Mewhinney & Strauss LLC	1.27%	$74.3M	0.23%	Not reported
Manufacturers Life Insurance Company, the	1.24%	$72.7M	0.06%	Not reported
Northern Trust Corp	1.24%	$72.4M	0.01%	Not reported
American Century Companies Inc	1.20%	$70.1M	0.03%	Not reported
Morgan Stanley	1.19%	$69.4M	0.00%	Not reported
Boston Trust Walden Corp	1.16%	$68.1M	0.52%	Reduce 5.09%
Emerald Advisers, LLC	1.07%	$62.6M	1.47%	Add 243.39%
UBS Group AG	1.04%	$60.8M	0.01%	Not reported
Goldman Sachs Group Inc	0.76%	$44.6M	0.00%	Not reported
Vanguard Fiduciary Trust Co	0.72%	$41.8M	0.01%	Not reported
Emerald Mutual Fund Advisers Trust	0.71%	$41.6M	1.46%	Add 362.84%
Principal Financial Group Inc	0.71%	$41.3M	0.02%	Not reported
Bank of New York Mellon Corp	0.66%	$38.8M	0.01%	Not reported
Citigroup Inc	0.60%	$34.9M	0.01%	Not reported
First Eagle Investment Management, LLC	0.47%	$27.3M	0.02%	Add 43.06%
Millennium Management LLC	0.45%	$26.4M	0.01%	Not reported
Grantham, Mayo, Van Otterloo & Co. LLC	0.44%	$25.7M	0.06%	Reduce 59.50%
Alpine Associates Management Inc.	0.44%	$25.6M	1.60%	New Not reported
Sagefield Capital LP	0.43%	$25.3M	1.88%	Add 62.66%
D. E. Shaw & Co., Inc.	0.43%	$25.2M	0.01%	Not reported
Federated Hermes, Inc.	0.43%	$25.1M	0.04%	Not reported
First Trust Advisors LP	0.40%	$23.4M	0.01%	Reduce 10.52%
Alberta Investment Management Corp	0.35%	$20.3M	0.11%	Not reported
Public Sector Pension Investment Board	0.34%	$20M	0.05%	Reduce 3.82%
Weiss Asset Management LP	0.33%	$19.6M	0.21%	New Not reported
Kennedy Capital Management LLC	0.31%	$18M	0.32%	Reduce 46.61%
Bessemer Group Inc	0.31%	$18M	0.02%	Add 150.00%
Old West Investment Management, LLC	0.29%	$17.1M	1.81%	Add 112.65%
Bank of America Corp	0.29%	$17.1M	0.00%	Not reported
BNP Paribas Financial Markets	0.28%	$16.6M	0.01%	Not reported
Creative Planning	0.27%	$15.8M	0.01%	Not reported
Nuveen, LLC	0.26%	$15.4M	0.00%	Not reported
Rhumbline Advisers	0.25%	$14.5M	0.01%	Not reported
Legal & General Group Plc	0.23%	$13.3M	0.00%	Not reported
Wellington Management Group LLP	0.22%	$13.1M	0.00%	New Not reported
Deutsche Bank Ag\	0.22%	$12.9M	0.00%	Not reported

50 of 420 holders

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