(AMTX) Stock Institutional Trading Activity


(AMTX) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q3 2025), investors with some of the largest reported share count changes include Renaissance Technologies LLC. 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
Q3 2025Renaissance Technologies LLCBuy287,501363,001$816,752
Q4 2024Renaissance Technologies LLCBuy42,80075,500$203,095
Q3 2023Renaissance Technologies LLCSell-51,96032,700$136
Q1 2023Renaissance Technologies LLCSell-118,15584,660$196
Q4 2022Renaissance Technologies LLCSell-46,400202,815$803
Q3 2022Renaissance Technologies LLCSell-158,556249,215$1,525
Q2 2022Renaissance Technologies LLCSell-7,314407,771$2,002
Q1 2022Renaissance Technologies LLCSell-64,100415,085$5,259
Q4 2021Renaissance Technologies LLCSell-101,972479,185$5,894
Q3 2021Renaissance Technologies LLCSell-342,492581,157$10,624
Q2 2021Renaissance Technologies LLCSell-757,400923,649$10,317
Q1 2021Renaissance Technologies LLCSell-50,3001,681,049$41,219
Q4 2020Renaissance Technologies LLCBuy629,7211,731,349$4,311
Q3 2020Renaissance Technologies LLCBuy726,8211,101,628$3,525
Q2 2020Renaissance Technologies LLCBuy374,807374,807$303

Frequently asked questions about AMTX activity

  • Which institutional owners are buying AMTX?

    Institutional owners buying AMTX 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 AMTX activity?

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

  • Is institutional interest in AMTX increasing?

    Institutional interest in AMTX 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.