Axcelis Technologies Inc (ACLS) Ownership & Trading Activity
Institutional holders, insider transactions, and congressional trades for ACLS. 13F holdings as of 2026-03-31.
Top Institutional Holders
| Institution | Shares | Value | Change |
|---|---|---|---|
| BlackRock, Inc. | 4,936,774 | $460M | INCREASED |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2,488,293 | $232M | NEW |
| FMR LLC | 2,431,121 | $226M | INCREASED |
| REINHART PARTNERS, LLC. | 1,657,745 | $154M | INCREASED |
| VANGUARD CAPITAL MANAGEMENT LLC | 1,382,770 | $129M | NEW |
Recent Insider Trades
| Insider | Type | Shares | Value | Date |
|---|---|---|---|---|
| David Ryzhik (SVP Interim CFO) | SELL | 76 | $13K | 2026-06-16 |
| Gerald M Blumenstock (EVP, Research, Dev. & Eng.) | SELL | 506 | $97K | 2026-06-15 |
| Necip Sayiner (Director) | SELL | 1,586 | $250K | 2026-06-03 |
| Robert John Mahoney (EVP Global Operations) | SELL | 1,155 | $179K | 2026-06-02 |
| Todd Sutton (VP Corporate Controller) | SELL | 2,000 | $320K | 2026-05-27 |
Full institutional holdings, insider history, and congressional trades for Axcelis Technologies Inc on SentiSense.