AMSC AMERICAN SUPERCONDUCTOR CORP /DE/: institutional ownership and insider trading
297 funds reported holding $1.69B of AMERICAN SUPERCONDUCTOR CORP /DE/ in their latest 13F filings; in Q2 2026 funds net bought $114M, with 62 new positions and 31 funds selling out; over the last 12 months insiders bought $0 and sold $7.80M on the open market.
Famous investors holding AMSC
- D. E. Shaw (D. E. Shaw & Co.): $15.2M, 0.0% of the portfolio
- Ken Griffin (Citadel Advisors): $17.8M, 0.0% of the portfolio
- Izzy Englander (Millennium Management): $4.18M, 0.0% of the portfolio
- Two Sigma (Two Sigma Investments): $4.02M, 0.0% of the portfolio
Largest institutional holders of AMSC
- BlackRock, Inc. (BLK) — $170M
- VANGUARD GROUP INC — $101M
- VANGUARD CAPITAL MANAGEMENT LLC — $84.4M
- BARROW HANLEY MEWHINNEY & STRAUSS LLC — $70.7M
- UBS Group AG (UBS) — $59.3M
- VANGUARD PORTFOLIO MANAGEMENT LLC — $58.9M
- STATE STREET CORP (STT, STT-PG) — $56.4M
- GOLDMAN SACHS GROUP INC (GS, GSCE, GS-PA, GS-PC, GS-PD) — $53.7M
- GEODE CAPITAL MANAGEMENT, LLC — $51.6M
- FIRST TRUST ADVISORS LP — $48.5M
Recent AMSC insider trades
- Jun 11, 2026: Dambier Laura A. sold 4,000 shares ($151K)
- Jun 11, 2026: McGahn Daniel P sold 16,117 shares ($603K)
- Jun 11, 2026: Kosiba John W JR sold 6,769 shares ($254K)
- Jun 8, 2026: McGahn Daniel P sold 9,670 shares ($404K)
5%+ owners
- BlackRock, Inc.: 7.1% (Schedule 13G/A, filed Apr 17, 2025)