Amtech Systems Inc (ASYS)

About Amtech Systems Inc

Amtech Systems Inc provides equipment, consumables and services for semiconductor device packaging, wafer production and device fabrication. Its products are used to fabricate and package GPUs for AI applications, SiC and Si power devices, and other optical, analog and digital devices, and are sold to semiconductor packaging, electronic assembly and device fabrication companies. It operates through two segments: Thermal Processing Solutions, which includes conveyorized reflow equipment, high-temperature conveyorized furnaces and diffusion furnaces with maximum revenue; and Semiconductor Fabrication Solutions, which includes consumables, equipment and services for wafer polishing, dicing and cleaning. The majority of revenue is derived from the United States.

Institutional ownership

In 13F filings for the quarter ended June 30, 2026, 110 institutions reported holding ASYS, with 10.5 million shares worth $241.6 million in aggregate. The largest reported holder was Aigh Capital Management, with 1.3 million shares worth $28.9 million. Of the 5 largest holders listed below, 2 opened new positions in ASYS and 3 added shares during the quarter.

Form 13F is a quarterly report that institutional investment managers with at least $100 million in qualifying securities file with the SEC. It lists long positions as of the last day of the quarter and is due within 45 days of quarter end, so these holdings describe that date rather than today.

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