American Superconductor Corporation
At today's price, American Superconductor Corporation (AMSC) is priced for today's economics sustained for ~34.3 years. boothcheck doesn't publish a fair value or a price target; it shows what the price assumes, so you can judge whether that bar is too high. Built from SEC EDGAR filings.
• American Superconductor sells power-electronics systems that strengthen and stabilize the electric grid, with the grid business about 70% of revenue and a wind segment supplying turbine designs and field service for the rest. • The decisive number is the gap between growth and profit: revenue grew 30% in the latest quarter, but operating margin is only about 4%, so the price is paying a very high multiple of today's thin operating income for the promise that the margin scales as volume does. •
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233 institutional managers reported holding AMSC in 13F filings for the quarter ended 2026-03-31. Together they hold about 74% of the company; the top 10 hold 37%. 47 opened new positions that quarter. Held by Vanguard Group, BlackRock, Baillie Gifford, among others. On the short side, 3.5M shares were sold short as of the 2026-06-15 count, about 8% of shares outstanding (2.4 days of typical volume to cover).
Quarterly 13F filings arrive up to 45 days after quarter end, so the picture is never current (filed through 2026-05-29). Nothing here is investment advice.
AMSC's share count grew 56.3% over the past five years even with $126k spent on repurchases. It pays no dividend. Cash returned over the past three years: $126k in repurchases.
Share counts are split-adjusted; repurchase totals are gross of share issuance. Nothing here is investment advice.
No open-market insider buys on file at AMSC over the trailing three years. Absence is a fact about the company, not a signal. 7 officers and directors are on file.
Code P open-market purchases from SEC Form 4 filings, non-derivative, excluding scheduled 10b5-1 plans. Nothing here is investment advice.
AMSC's recent reports: the day-one move, then what the following quarter actually did.
| report | day one | next quarter |
|---|---|---|
| 2023-08-10 | +11.3% | -33.8% |
| 2023-11-02 | +16.0% | +56.2% |
| 2024-01-25 | +32.1% | +2.0% |
| 2024-05-30 | +9.5% | +30.0% |
Day-one is the close-to-close move around the filing. Nothing here is investment advice.
AMSC's latest 8-K filings: 2026-06-02 (items 5.02, 9.01); 2026-05-27 (items 2.02, 9.01); 2026-02-04 (items 2.02, 9.01); 2025-12-23 (items 8.01, 9.01); 2025-12-10 (items 1.01, 2.01, 3.02, 8.01, 9.01).
Item codes are the SEC's own classification of what each report discloses. Nothing here is investment advice.
Last analyzed: June 27, 2026
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