Amtech Systems Inc (NASDAQ:ASYS) currently has 11 active institutional owners and shareholders as of today (December 2025), that have filed 13F forms with the Securities Exchange Commission (SEC).
| Owner Name | Date | Shares Held | Change (QoQ) | Change (%) | Value (USD) |
|---|---|---|---|---|---|
| DIMENSIONAL FUND ADVISORS LP | 30 Sep, 2025 | 849,815 | -59,751 | -6.57% | $7,869,244.00 |
| First Eagle Investment Management, LLC | 30 Sep, 2025 | 752,346 | -48,036 | -6.00% | $6,966,724.00 |
| VANGUARD GROUP INC | 30 Sep, 2025 | 676,006 | 17,099 | 2.60% | $6,259,815.00 |
| Pacific Ridge Capital Partners, LLC | 30 Sep, 2025 | 646,489 | -14,878 | -2.25% | $5,986,488.00 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 30 Sep, 2025 | 182,429 | 182,429 | 0.00% | $1,689,293.00 |
| JANE STREET GROUP, LLC | 30 Sep, 2025 | 175,422 | 175,422 | 0.00% | $1,624,408.00 |
| BlackRock, Inc. | 30 Sep, 2025 | 132,873 | 8,275 | 6.64% | $1,230,404.00 |
| GEODE CAPITAL MANAGEMENT, LLC | 30 Sep, 2025 | 131,281 | -5,093 | -3.73% | $1,216,191.00 |
| MARSHALL WACE, LLP | 30 Sep, 2025 | 105,272 | 105,272 | 0.00% | $974,820.00 |
| ACADIAN ASSET MANAGEMENT LLC | 30 Sep, 2025 | 83,532 | 40,564 | 94.41% | $771.00 |
| CITADEL ADVISORS LLC | 30 Sep, 2025 | 78,454 | 78,454 | 0.00% | $726,484.00 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 30 Sep, 2025 | 64,800 | 0 | 0.00% | $600,048.00 |
| STATE STREET CORP | 30 Sep, 2025 | 54,790 | 0 | 0.00% | $507,355.00 |
| ESSEX INVESTMENT MANAGEMENT CO LLC | 30 Sep, 2025 | 37,816 | 37,816 | 0.00% | $350,176.00 |
| NORTHERN TRUST CORP | 30 Sep, 2025 | 36,703 | -10,064 | -21.52% | $339,870.00 |
| WealthTrust Axiom LLC | 30 Sep, 2025 | 35,800 | -6,324 | -15.01% | $331,508.00 |
| Ancora Advisors LLC | 30 Sep, 2025 | 35,247 | -75,775 | -68.25% | $326,387.00 |
| GSA CAPITAL PARTNERS LLP | 30 Sep, 2025 | 33,817 | -10,602 | -23.87% | $313.00 |
| Kovack Advisors, Inc. | 30 Sep, 2025 | 32,150 | -40,850 | -55.96% | $297,709.00 |
| GOLDMAN SACHS GROUP INC | 30 Sep, 2025 | 31,251 | 11,297 | 56.62% | $289,384.00 |