AMSC (AMSC) Institutional Buying Activity

Institutional investors tracked by InsiderSet increased exposure to AMSC during the quarter ended December 31, 2025 through a combination of new purchases and expanded existing positions disclosed in SEC Form 13F filings.

The largest institutional buyer of AMSC during the latest reporting period was Renaissance Technologies LLC, which increased its reported AMSC position by approximately $9.83M based on quarter-end filing values. Several additional hedge funds and long-term asset managers also reported meaningful increases in AMSC exposure during the quarter.

Institutional buying activity can provide insight into investor conviction, sector allocation trends, and smart money positioning toward AMSC. InsiderSet tracks quarterly accumulation trends, new institutional positions, ownership increases, and estimated performance of newly disclosed holdings using SEC filing data and recent market prices.

The investors highlighted on this page collectively added approximately $13.33M in reported AMSC exposure during the latest filing period, reflecting continued institutional interest in AMSC's growth initiatives and strategic positioning.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q3 2025Renaissance Technologies LLCBuy165,600323,989$19,241,707
Q3 2025Polen Capital ManagementBuy7047,291$2,808,612
Q2 2025Polen Capital ManagementBuy47,22147,221$1,732,538
Q2 2024Renaissance Technologies LLCBuy74,500187,989$4,397,063
Q1 2024Renaissance Technologies LLCBuy44,000113,489$1,533
Q2 2023Renaissance Technologies LLCBuy12,88969,489$435
Q3 2022Renaissance Technologies LLCBuy95,200136,889$600
Q1 2022Renaissance Technologies LLCBuy36,08179,889$608
Q2 2020Renaissance Technologies LLCBuy121,9001,282,317$10,425
Q3 2019Renaissance Technologies LLCBuy91,2251,249,158$9,793
Q2 2019Renaissance Technologies LLCBuy415,2861,157,933$10,746
Q1 2019Renaissance Technologies LLCBuy628,689742,647$9,550
Q4 2018Renaissance Technologies LLCBuy42,200113,958$1,271
Q3 2017Renaissance Technologies LLCBuy68,100554,288$2,516
Q2 2017Renaissance Technologies LLCBuy26,600486,188$2,246
Q1 2017Renaissance Technologies LLCBuy33,700459,588$3,153
Q4 2016Renaissance Technologies LLCBuy7,800425,888$3,139
Q3 2016Renaissance Technologies LLCBuy49,800418,088$2,931
Q2 2016Renaissance Technologies LLCBuy49,000368,288$3,108
Q1 2016Renaissance Technologies LLCBuy30,600319,288$2,427
Q4 2015Renaissance Technologies LLCBuy26,000288,688$1,839
Q3 2015Renaissance Technologies LLCBuy81,200262,688$1,137
Q2 2015Renaissance Technologies LLCBuy107,200181,488$949
Q1 2015Renaissance Technologies LLCBuy74,28874,288$478

Frequently asked questions about AMSC activity

  • Which institutional owners are buying AMSC?

    Institutional owners buying AMSC 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 AMSC activity?

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

  • Is institutional interest in AMSC increasing?

    Institutional interest in AMSC 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.

Related Buying Insights

AMSC Institutional Buying Activity | InsiderSet