Who owns AXCELIS TECHNOLOGIES INC?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of ACLS from SEC Form 13F filings across 442 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 442 institutions disclosed 30.9M shares of AXCELIS TECHNOLOGIES INC worth $5.85B — about 100.4% of shares outstanding; the largest disclosed holder is BlackRock, Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.
442
13F holders
$5.85B
value, 2026 filers
100.4%
of shares outstanding (30.9M sh)
121
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of ACLS's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 5.0M | $952.8M | 0.0% | 16.3% | +1.9% |
| 2 | FMR LLC | 4.1M | $781.7M | 0.0% | 13.4% | +69.7% |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2.5M | $469.6M | 0.0% | 8% | -0.4% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 1.4M | $262.7M | 0.0% | 4.5% | +0.3% |
| 5 | STATE STREET CORP | 1.2M | $233.2M | 0.0% | 4% | +3.5% |
| 6 | VICTORY CAPITAL MANAGEMENT INC | 1.1M | $214.8M | 0.1% | 3.7% | -11.3% |
| 7 | REINHART PARTNERS, LLC. | 928,660 | $175.9M | 4.0% | 3% | -44.0% |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 833,607 | $158.0M | 0.0% | 2.7% | +2.8% |
| 9 | BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 803,151 | $152.2M | 0.2% | 2.6% | -20.2% |
| 10 | DIMENSIONAL FUND ADVISORS LP | 709,266 | $134.3M | 0.0% | 2.3% | -16.0% |
| 11 | Balyasny Asset Management L.P. | 616,196 | $116.7M | 0.1% | 2% | -54.8% |
| 12 | PRIMECAP MANAGEMENT CO/CA/ | 610,451 | $115.6M | 0.1% | 2% | -7.3% |
| 13 | Invesco Ltd. | 527,724 | $100.0M | 0.0% | 1.7% | +219.7% |
| 14 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 416,230 | $78.9M | 0.0% | 1.4% | -6.6% |
| 15 | PRICE T ROWE ASSOCIATES INC /MD/ | 394,455 | $74.7M | 0.0% | 1.3% | +8.9% |
| 16 | BARROW HANLEY MEWHINNEY & STRAUSS LLC | 392,240 | $74.3M | 0.2% | 1.3% | +688040.4% |
| 17 | MANUFACTURERS LIFE INSURANCE COMPANY, THE | 383,760 | $72.7M | 0.1% | 1.2% | -22.0% |
| 18 | NORTHERN TRUST CORP | 382,027 | $72.4M | 0.0% | 1.2% | -8.3% |
| 19 | AMERICAN CENTURY COMPANIES INC | 369,879 | $70.1M | 0.0% | 1.2% | -61.1% |
| 20 | MORGAN STANLEY | 366,077 | $69.4M | 0.0% | 1.2% | -37.1% |
| 21 | Boston Trust Walden Corp | 359,256 | $68.1M | 0.5% | 1.2% | -5.1% |
| 22 | EMERALD ADVISERS, LLC | 330,469 | $62.6M | 1.5% | 1.1% | +243.4% |
| 23 | UBS Group AG | 320,891 | $60.8M | 0.0% | 1% | -14.9% |
| 24 | Boston Partners | 303,929 | $55.7M | 0.0% | 1% | -10.7% |
| 25 | GOLDMAN SACHS GROUP INC | 235,253 | $44.6M | 0.0% | 0.8% | -52.7% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.