American Superconductor Corp
AMSC · US
Held by 1 big investorsLargest: Baillie Gifford
American Superconductor Corp is held by 1 of the 24 tracked investors in their latest 13F filings. The largest position is Baillie Gifford's at $38.7M, 0.04% of that portfolio.
Big investors holding this stock
Latest 13F of the 24 tracked investors. Common shares only.
| Investor | Value ($) | vs prior quarter |
|---|---|---|
| Baillie Gifford weight 0.04% · Q2 2026 |
38.7M | ▼ 36% |
Questions
Which big investors own American Superconductor Corp?
Baillie Gifford ($38.7M), per their latest 13F filings.
Does Warren Buffett own American Superconductor Corp?
Berkshire Hathaway did not report it in its latest 13F.
Does Korea's National Pension Service own American Superconductor Corp?
Not in its latest 13F.
Restated and computed from SEC (13F, 13D/G, Form 4) and DART filings and NPS public data. Filings describe a past date and may differ from current holdings (13F: quarter end, up to 45 days later). Not investment advice.
Sources: SEC EDGAR, DART, data.go.kr (NPS), OpenFIGI. See Methodology for how figures are computed.