AMTECH SYSTEMS INC (ASYS) Stock Institutional Trading Activity


AMTECH SYSTEMS INC (ASYS) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Renaissance Technologies LLC and First Eagle U.S. Value. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q4 2025Renaissance Technologies LLCBuy126,296146,596$1,839,780
Q3 2025Renaissance Technologies LLCBuy5,80020,300$187,978
Q3 2025First Eagle U.S. ValueSell-48,036752,346$6,966,724
Q2 2025Renaissance Technologies LLCBuy1,80014,500$64,380
Q2 2025First Eagle U.S. ValueSell-41,540800,382$3,553,696
Q1 2025Renaissance Technologies LLCBuy1,00012,700$61,341
Q1 2025First Eagle U.S. ValueBuy7,000841,922$4,066,483
Q4 2024Renaissance Technologies LLCSell-65,96111,700$63,765
Q4 2024First Eagle U.S. ValueBuy51,555834,922$4,550,325
Q3 2024First Eagle U.S. ValueBuy107,523783,367$4,543,529
Q2 2024First Eagle U.S. ValueBuy77,799675,844$3,960,446
Q1 2024First Eagle U.S. ValueBuy16,090598,045$3,235,423
Q4 2023First Eagle U.S. ValueBuy7,609581,955$2,444,211
Q3 2023First Eagle U.S. ValueBuy161,267574,346$4,376,517
Q2 2023Renaissance Technologies LLCBuy2,11477,661$742
Q2 2023First Eagle U.S. ValueBuy74,868413,079$3,949,035
Q1 2023Renaissance Technologies LLCBuy7,95175,547$721
Q1 2023First Eagle U.S. ValueBuy41,404338,211$3,226,533
Q4 2022Renaissance Technologies LLCBuy20,80067,596$514
Q4 2022First Eagle U.S. ValueBuy100,890296,807$2,255,733
Q3 2022Renaissance Technologies LLCBuy11,60046,796$398
Q3 2022First Eagle U.S. ValueBuy28,665195,917$1,665
Q2 2022Renaissance Technologies LLCSell-14,90035,196$257
Q2 2022First Eagle U.S. ValueBuy119,882167,252$1,221
Q1 2022First Eagle U.S. ValueBuy35,47847,370$477
Q1 2022Renaissance Technologies LLCSell-100,46150,096$504
Q4 2021First Eagle U.S. ValueSell-4,50011,892$117
Q4 2021Renaissance Technologies LLCBuy67,564150,557$1,488
Q3 2021First Eagle U.S. ValueBuy9,30016,392$187
Q3 2021Renaissance Technologies LLCSell-139,70382,993$949

Frequently asked questions about ASYS activity

  • Which institutional owners are buying ASYS?

    Institutional owners buying ASYS include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in ASYS activity?

    "Buy" means an investor increased their reported position in ASYS compared to the prior reporting period. This reflects growing exposure to AMTECH SYSTEMS INC (ASYS) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in ASYS increasing?

    Institutional interest in ASYS can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.