Who owns Amtech Systems (ASYS)?
Amtech Systems' largest shareholders, according to SEC filings, are Robert Averick (17.1%), Orin Hirschman (7.2%) and First Eagle Investment Management, LLC (4.8%). In all, 85 holders named in SEC filings declare between 70.7% and 77.2% of its shares, and 28 smaller fund managers another 0.35%.
Amtech Systems' largest shareholders
| Holder | Filing | Shares | Share of capital | As of | Holding since (13F) |
|---|---|---|---|---|---|
| Robert Averick | 13D | 3.0M | 17.1% | Jun 1, 2026 | — |
| Orin Hirschman | 13G | 1.3M | 7.2% | Jun 30, 2026 | — |
| First Eagle Investment Management, LLC | 13F | 848,426 | 4.8% | Jun 30, 2026 | Q2 2021 |
| BlackRock | 13F | 763,487 | 4.4% | Jun 30, 2026 | Q4 2019 or earlier |
| Vanguard | 13F | 743,658 | 4.2% | Jun 30, 2026 | Q4 2019 or earlier |
| AWM Investment Company, Inc. | 13F | 690,000 | 3.9% | Jun 30, 2026 | Q2 2026 |
| ACADIAN ASSET MANAGEMENT LLC | 13F | 580,278 | 3.3% | Jun 30, 2026 | Q2 2020 |
| Dimensional | 13F | 426,694 | 2.4% | Jun 30, 2026 | Q4 2019 or earlier |
| Marshall Wace | 13F | 398,564 | 2.3% | Jun 30, 2026 | Q3 2025 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 13F | 308,896 | 1.8% | Jun 30, 2026 | Q3 2025 |
| Geode Capital | 13F | 284,836 | 1.6% | Jun 30, 2026 | Q4 2019 or earlier |
| Connor, Clark & Lunn Investment Management Ltd. | 13F | 282,388 | 1.6% | Jun 30, 2026 | Q4 2025 |
| Renaissance Technologies | 13F | 260,605 | 1.5% | Jun 30, 2026 | Q4 2024 |
| Two Sigma | 13F | 254,367 | 1.5% | Jun 30, 2026 | Q4 2025 |
| Jane Street | 13F | 249,465 | 1.4% | Jun 30, 2026 | Q3 2025 |
| Regal Partners Ltd | 13F | 237,503 | 1.4% | Jun 30, 2026 | Q2 2026 |
| Qube Research & Technologies Ltd | 13F | 194,714 | 1.1% | Jun 30, 2026 | Q4 2025 |
| State Street | 13F | 155,849 | 0.89% | Jun 30, 2026 | Q2 2021 |
| Trexquant Investment LP | 13F | 119,750 | 0.68% | Jun 30, 2026 | Q4 2025 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 13F | 111,472 | 0.64% | Jun 30, 2026 | Q4 2019 or earlier |
| Citadel | 13F | 106,246 | 0.61% | Jun 30, 2026 | Q3 2022 |
| Palisades Investment Partners, LLC | 13F | 102,691 | 0.59% | Jun 30, 2026 | Q1 2026 |
| Northern Trust | 13F | 91,857 | 0.52% | Jun 30, 2026 | Q4 2019 or earlier |
| Millennium | 13F | 90,626 | 0.52% | Jun 30, 2026 | Q3 2025 |
| Morgan Stanley | 13F | 82,999 | 0.47% | Jun 30, 2026 | Q1 2025 |
Amtech Systems ownership breakdown
85 holders named in SEC filings declare between 70.7% and 77.2% of Amtech Systems' shares outstanding, as of Aug 24, 2026. The largest are Robert Averick (17.1%), Orin Hirschman (7.2%) and First Eagle Investment Management, LLC (4.8%); the five largest hold 37.7% together. Another 28 institutions hold small positions worth 0.35%. At least 22.5% of the shares appear in no ownership filing: investors who do not have to report, mostly individuals. From Mar 31, 2026 to Jun 30, 2026, institutions that filed both quarters bought 25.5% and sold 8.5% of the shares, a net purchase of 17.0%; 42 opened a position, 37 added, 20 reduced and 12 sold out. Biggest buyers: AIGH Capital Management LLC (+1.3M shares) and AWM Investment Company, Inc. (+690,000 shares). Biggest sellers: Pacific Ridge Capital Partners, LLC (-405,371) and Millennium (-362,971). Schedule 13D/G filings since Mar 31, 2026: First Eagle Investment Management, LLC fell below 5% (4.8% still declared) on Jun 30, 2026, Orin Hirschman crossed 5% (7.2%) on Jun 30, 2026 and Robert Averick crossed 5% (17.1%) on Jun 1, 2026. Directors and officers, from their latest Form 4: Guy Shechter (0.31%). Over time, 105 managers declared Amtech Systems in their 13F for Q2 2026, against 40 for Q4 2019: together at most 70.3% of the shares outstanding, against 40.9%.
Amtech Systems institutional ownership over time
| Quarter | 13F managers | Share of the company (upper bound) | Value declared | Held by stock pickers |
|---|---|---|---|---|
| Q4 2019 | 40 | 40.9% | $41.2M | 84.5% |
| Q4 2020 | 41 | 52.2% | $46.8M | 83.3% |
| Q4 2021 | 48 | 67.4% | $95.3M | 90.6% |
| Q4 2022 | 47 | 47.2% | $50.2M | 85.4% |
| Q4 2023 | 44 | 43.4% | $25.9M | 81.8% |
| Q4 2024 | 35 | 38.9% | $30.2M | 80.4% |
| Q4 2025 | 63 | 42.8% | $77.2M | 74.9% |
| Q2 2026 | 105 | 70.3% | $235.4M | 74.8% |
From SEC Form 13F, every quarter since the end of 2019, read like the current quarter: entities of a house summed, a value contradicting its share count set aside. The share of the company is an upper bound — two managers can declare the same shares — over the shares outstanding at that date.
Questions about Amtech Systems' shareholders
Who is the largest shareholder of Amtech Systems?
Robert Averick, with 17.1% of Amtech Systems' shares (3.0 million shares), according to a Schedule 13D as of Jun 1, 2026.
What is Amtech Systems' institutional ownership?
In their 13F filings for Q2 2026, 105 fund managers declared Amtech Systems shares: at most 70.3% of the shares outstanding — an upper bound, since two managers can report the same shares. With large shareholders (Schedule 13D/G) and directors and officers (Form 4), 85 named holders declare between 70.7% and 77.2% of the shares.
How much of Amtech Systems does Orin Hirschman own?
Orin Hirschman declared 1.3 million shares, 7.2% of Amtech Systems' shares, in a Schedule 13G as of Jun 30, 2026.
How much of Amtech Systems does First Eagle Investment Management, LLC own?
First Eagle Investment Management, LLC declared 848,426 shares, 4.8% of Amtech Systems' shares, in its 13F filing for the quarter ended Jun 30, 2026, up 0.09 percentage points from its previous filing (Mar 31, 2026).
How much Amtech Systems stock does Robert Averick own?
Robert Averick declared 3.0 million shares, 17.1% of Amtech Systems' shares, in a Schedule 13D as of Jun 1, 2026.
Who bought and sold Amtech Systems stock last quarter?
From Mar 31, 2026 to Jun 30, 2026, fund managers that filed both quarters bought 25.5% of Amtech Systems' shares and sold 8.5%: 42 opened a position and 12 sold out. Biggest buyers: AIGH Capital Management LLC (+1.3 million shares), AWM Investment Company, Inc. (+690,000 shares) and BlackRock (+618,041 shares). Biggest sellers: Pacific Ridge Capital Partners, LLC (−405,371 shares), Millennium (−362,971 shares) and Dimensional (−102,657 shares).
How much of Amtech Systems do individual investors own?
No filing says it directly: individual investors do not have to report their holdings. At least 22.5% of Amtech Systems' shares appear in no ownership filing — retail investors, holders below the reporting thresholds and foreign funds.
Who owns the other AI companies? The largest shareholder of each, from SEC filings.