American Superconductor Corp (AMSC)
MOTORS & GENERATORS
American Superconductor Corp (AMSC) is listed on Nasdaq, where it has traded since December 11, 1991.
- Listed On
- Nasdaq
- Listed Since
- December 11, 1991
- Employees
- 1,195
- Market Cap
- $1.4B
About American Superconductor Corp
American Superconductor Corp generates the ideas, technologies, and solutions that meet the world's demand for smarter, cleaner, and energy. Through its Windtec Solutions, the company enables manufacturers to launch wind turbines quickly, effectively, and profitably. Through its Gridtec Solutions, the company provides engineering planning services and grid systems that optimize network reliability, efficiency, and performance. The company's segment includes Grid and Wind. It generates maximum revenue from the Grid segment.
Institutional ownership
In 13F filings for the quarter ended June 30, 2026, 268 institutions reported holding AMSC, with 35.1 million shares worth $1.5 billion in aggregate. The largest reported holder was BlackRock, with 4.1 million shares worth $170.0 million. Of the 5 largest holders listed below, 4 added shares and 1 reduced its position during the quarter.
| Institution | Shares | Value | Quarter change |
|---|---|---|---|
| BlackRock | 4,095,371 | $170M | Added 2.83% |
| Vanguard | 3,853,877 | $160M | Reduced 6.83% |
| Barrow Hanley Mewhinney & Strauss | 1,704,006 | $71M | Added 49.5% |
| UBS Group | 1,520,357 | $63M | Added 120.92% |
| State Street | 1,358,225 | $56M | Added 7.7% |
Form 13F is a quarterly report that institutional investment managers with at least $100 million in qualifying securities file with the SEC. It lists long positions as of the last day of the quarter and is due within 45 days of quarter end, so these holdings describe that date rather than today.
Frequently asked questions
What is AMSC?
American Superconductor Corp (AMSC) is listed on Nasdaq, where it has traded since December 11, 1991.
Who are the largest institutional holders of AMSC?
In 13F filings for the quarter ended June 30, 2026, the largest reported holders of AMSC were BlackRock, Vanguard and Barrow Hanley Mewhinney & Strauss.
How many institutions own AMSC?
268 institutions reported a position in AMSC for the quarter ended June 30, 2026, worth $1.5 billion in total.
Did institutions buy or sell AMSC last quarter?
Of the 5 largest reported holders, 4 added shares and 1 reduced its position during the quarter. Every reported holder and its change is on the SentiSense ownership page for AMSC.
Every reported institutional holder, plus insider and congressional trades in AMSC, on SentiSense.