AMSC — American Superconductor Corp COM

Ownership history in GMT CAPITAL CORP  ·  36 quarters on record

This page tracks every 13F SEC filing in which GMT CAPITAL CORP reported a position in American Superconductor Corp COM (AMSC). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.

Peak position
0.54% (2020 Q3)
Avg. % of fund
0.09%
First filed
2011 Q2
Last filed
2025 Q3
Quarters held
36
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q3 UNCHANGED 108,066 — 0% 0.29% $6.4M $59.39
2025 Q2 UNCHANGED 108,066 — 0% 0.17% $4.0M $36.69
2025 Q1 UNCHANGED 108,066 — 0% 0.10% $2.0M $18.14
2024 Q4 UNCHANGED 108,066 — 0% 0.13% $2.7M $24.63
32 older quarters hidden  —  Sign in free or upgrade to Premium to see full history
% of Fund (quarterly)    AMSC price (monthly, adj. close)

Other funds also holding AMSC

As of 2025 Q4 — sorted by position size

AWM Investment Company, Inc. 3Y 7Y 2.1% Telemark Asset Management, LLC 3Y 7Y 1.78% ESSEX INVESTMENT MANAGEMENT CO LLC 3Y 7Y 0.94% OBERWEIS ASSET MANAGEMENT INC/ 3Y 7Y 0.88% Lumbard & Kellner, LLC 3Y 7Y 0.72% EMERALD ADVISERS, LLC 3Y 7Y 0.67% Dynamic Technology Lab Private Ltd 3Y 7Y 0.45% Atreides Management, LP 3Y 0.37% VIRTUS ADVISERS, LLC 3Y 7Y 0.35% Fund Advisors of America Inc/FL 0.29%
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