Who owns Axcelis Technologies, Inc.?
Institutional ownership of ACLS from SEC Form 13F filings across 287 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.
287
13F holders
$4.67B
value, 2026 filers
82.4%
of shares outstanding (25.3M sh)
67
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% | 16.4% | +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% | 8.1% | -0.4% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 1.4M | $262.7M | 0.0% | 4.5% | -49.9% |
| 5 | VICTORY CAPITAL MANAGEMENT INC | 1.1M | $214.8M | 0.1% | 3.7% | -11.3% |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | 833,607 | $158.0M | 0.0% | 2.7% | +2.8% |
| 7 | BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 803,151 | $152.2M | 0.2% | 2.6% | -20.2% |
| 8 | Balyasny Asset Management L.P. | 616,196 | $116.7M | 0.1% | 2% | -54.8% |
| 9 | PRIMECAP MANAGEMENT CO/CA/ | 610,451 | $115.6M | 0.1% | 2% | -7.3% |
| 10 | Invesco Ltd. | 527,724 | $100.0M | 0.0% | 1.7% | +219.7% |
| 11 | Sixth Street Partners Management Company, L.P.NEW | 416,230 | $78.9M | 13.6% | 1.4% | new |
| 12 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 416,230 | $78.9M | 0.0% | 1.4% | -6.6% |
| 13 | PRICE T ROWE ASSOCIATES INC /MD/ | 394,455 | $74,730 | 0.0% | 1.3% | +8.9% |
| 14 | MANUFACTURERS LIFE INSURANCE COMPANY, THE | 383,760 | $72.7M | 0.1% | 1.2% | -22.0% |
| 15 | NORTHERN TRUST CORP | 382,027 | $72.4M | 0.0% | 1.2% | -8.3% |
| 16 | AMERICAN CENTURY COMPANIES INC | 369,879 | $70.1M | 0.0% | 1.2% | -61.1% |
| 17 | MORGAN STANLEY | 366,077 | $69.4M | 0.0% | 1.2% | -37.1% |
| 18 | UBS Group AG | 320,891 | $60.8M | 0.0% | 1% | -14.9% |
| 19 | GOLDMAN SACHS GROUP INC | 235,253 | $44.6M | 0.0% | 0.8% | -52.7% |
| 20 | VANGUARD FIDUCIARY TRUST CO | 220,809 | $41.8M | 0.0% | 0.7% | +10.1% |
| 21 | Allspring Global Investments Holdings, LLC | 219,357 | $39.1M | 0.1% | 0.7% | -15.2% |
| 22 | PRINCIPAL FINANCIAL GROUP INC | 218,113 | $41.3M | 0.0% | 0.7% | +3.8% |
| 23 | Public Sector Pension Investment Board | 211,202 | $40.0M | 0.1% | 0.7% | +92.4% |
| 24 | Bank of New York Mellon Corp | 204,964 | $38.8M | 0.0% | 0.7% | +2.7% |
| 25 | CITIGROUP INC | 184,124 | $34.9M | 0.0% | 0.6% | +647.1% |
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.