Amtech Systems Inc (ASYS)
Technology
Semiconductor Equipment & Materials
15.30 $
+3.7%
vs. previous close
Closing price · As of: 31. Jul 2026
Who owns Amtech Systems Inc (ASYS)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 70.4% of the shares are freely tradable; institutional investors hold 65.1%.
Ownership Structure
Institutional ownership
Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
65.1%
Insiders
Share of the stock held by the executives, founders and major shareholders of the company itself.
9.1%
Float
Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
70.4%
Short % of float
Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
3.7%
Shares Outstanding
Total number of shares issued. Price times share count gives market cap.
18Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Arnhold & S. Bleichroeder Advisers, LLC | 5.78 | 832,453 | +13.4 | 03/31/2026 |
| Vanguard Group Inc | 4.39 | 631,905 | -6.5 | 12/31/2025 |
| Vanguard Capital Management, LLC | 3.92 | 564,327 | +0.0 | 03/31/2026 |
| Dimensional Fund Advisors, Inc. | 3.68 | 529,351 | -21.2 | 03/31/2026 |
| Acadian Asset Management LLC | 3.24 | 466,837 | +0.0 | 03/31/2026 |
| Millennium Management LLC | 3.15 | 453,597 | +1,894.0 | 03/31/2026 |
| Marshall Wace Asset Management Ltd | 2.90 | 417,076 | +18.3 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| First Eagle Small Cap Opportunity I | 5.26 | 756,316 | +4.1 | 05/31/2026 |
| First Eagle US Small Cap Strategy | 5.04 | 724,579 | +10.4 | 03/31/2026 |
| Vanguard Total Stock Mkt Idx Inv | 2.99 | 430,540 | +0.0 | 04/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.