Institutional shares held 31.7 Million
534K calls
512K puts
Total value of holdings $2.36B
$39.8M calls
$38.1M puts
Market Cap $2.49B
33,033,800 Shares Out.
Institutional ownership 95.97%
# of Institutions 345


Latest Institutional Activity in ACLS

Top Purchases

Q2 2025
Reinhart Partners, Inc. Shares Held: 1.52M ($114M)
Q2 2025
Qsm Asset Management LTD Shares Held: 60.4K ($4.55M)
Q2 2025
Ruffer LLP Shares Held: 24.7K ($1.86M)
Q2 2025
Janney Montgomery Scott LLC Shares Held: 38.9K ($2.93M)
Q2 2025
Ausbil Investment Management LTD Shares Held: 5.39K ($405K)

Top Sells

Q2 2025
Gsa Capital Partners LLP Shares Held: 10.2K ($765K)
Q2 2025
Harbor Capital Advisors, Inc. Shares Held: 136K ($10.2M)
Q2 2025
Exchange Traded Concepts, LLC Shares Held: 3.67K ($276K)
Q2 2025
Signaturefd, LLC Shares Held: 1.02K ($76.4K)
Q2 2025
Farther Finance Advisors, LLC Shares Held: 197 ($14.8K)

About ACLS

Axcelis Technologies, Inc. designs, manufactures, and services ion implantation and other processing equipment used in the fabrication of semiconductor chips in the United States, Europe, and Asia. The company offers high energy, high current, and medium current implanters for various application requirements. It also provides aftermarket lifecycle products and services, including used tools, spare parts, equipment upgrades, maintenance services, and customer training. It sells its equipment and services to semiconductor chip manufacturers through its direct sales force. The company was founded in 1978 and is headquartered in Beverly, Massachusetts.


Insider Transactions at ACLS

Insider Transaction List

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Date Insider Transaction Ownership Type Shares Traded Value / Price
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Last 12 Months Summary

Buy / Acquisition
174K Shares
From 13 Insiders
Grant, award, or other acquisition 174K shares
Sell / Disposition
34.6K Shares
From 8 Insiders
Open market or private sale 7.77K shares
Payment of exercise price or tax liability 26.9K shares

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