AMERICAN SUPERCONDUCTOR CORP (AMSC) Institutional Ownership Changes & 13F Activity

AMERICAN SUPERCONDUCTOR CORP (AMSC). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Goldman Sachs Group Inc, T. Rowe Price Investment Management, Inc., Hrt Financial Lp, Price T Rowe Associates Inc, and Portolan Capital Management, Llc.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
State Street CorpBuy+97,154+7.7%1,358,225$56.38MQ2 2026Sep 22, 2026
Manufacturers Life Insurance Company, TheSell-402-1.9%20,426$847.88KQ2 2026Sep 09, 2026
Citadel Advisors LlcSell-196,185-90.5%20,528$852.12KQ2 2026Sep 02, 2026
Corient Private Wealth LlcBuy+5,372—5,372$222.99KQ2 2026Aug 27, 2026
California State Teachers Retirement SystemSell-6,128-10.7%50,888$2.11MQ2 2026Aug 24, 2026
Assenagon Asset Management S.A.Sell-12,455-66.7%6,224$258.36KQ2 2026Aug 21, 2026
Mercer Global Advisors IncBuy+5,550—5,550$230.38KQ2 2026Aug 19, 2026
Goldman Sachs Group IncBuy+584,543+82.4%1,294,047$53.72MQ2 2026Aug 14, 2026
T. Rowe Price Investment Management, Inc.Buy+306,182—306,182$12.71MQ2 2026Aug 14, 2026
Hrt Financial LpBuy+298,420—298,420$12.39MQ2 2026Aug 14, 2026
Price T Rowe Associates IncBuy+285,255+486.7%343,867$14.27MQ2 2026Aug 14, 2026
Portolan Capital Management, LlcSell-266,322-90.1%29,314$1.22MQ2 2026Aug 14, 2026
Legal & General Group PlcBuy+226,732+42.8%756,863$31.42MQ2 2026Aug 14, 2026
D. E. Shaw & Co., Inc.Sell-200,729-35.4%366,845$15.23MQ2 2026Aug 14, 2026
Invesco Ltd.Buy+180,660—180,660$7.50MQ2 2026Aug 14, 2026
Susquehanna International Group, LlpBuy+173,421+280.6%235,235$9.76MQ2 2026Aug 14, 2026
Jane Street Group, LlcBuy+170,319—170,319$7.07MQ2 2026Aug 14, 2026
Awm Investment Company, Inc.Buy+150,000+18.7%951,604$39.50MQ2 2026Aug 14, 2026
Sei Investments CoSell-139,221-62.0%85,215$3.54MQ2 2026Aug 14, 2026
Oberweis Asset Management Inc/Buy+137,600+16.2%987,500$40.99MQ2 2026Aug 14, 2026
Ameriprise Financial IncBuy+111,856—111,856$4.64MQ2 2026Aug 14, 2026
Bank Of America CorpSell-103,235-49.3%106,216$4.41MQ2 2026Aug 14, 2026
Silvercrest Asset Management Group LlcBuy+100,026—100,026$4.15MQ2 2026Aug 14, 2026
Wellington Management Group LlpBuy+85,244—85,244$3.54MQ2 2026Aug 14, 2026
Holocene Advisors, LpBuy+83,588+689.2%95,716$3.97MQ2 2026Aug 14, 2026
Qube Research & Technologies LtdSell-78,840-23.9%250,573$10.40MQ2 2026Aug 14, 2026
Two Sigma Investments, LpSell-78,676-46.5%90,340$3.75MQ2 2026Aug 14, 2026
Balyasny Asset Management L.P.Sell-75,297-52.2%68,847$2.86MQ2 2026Aug 14, 2026
Defiance Etfs, LlcBuy+57,168+135.4%99,395$3.97MQ2 2026Aug 14, 2026
Polymer Capital Management (Us) LlcBuy+34,521—34,521$1.43MQ2 2026Aug 14, 2026
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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 AMERICAN SUPERCONDUCTOR CORP (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.

AMSC Institutional Ownership Changes and 13F Activity Q2 2026 | InsiderSet