American Superconductor (AMSC) Superinvestor holders
10 of the superinvestors we track hold American Superconductor (AMSC) in their latest 13F filings, $98M in total.
Summary
The largest holder is Baillie Gifford (Baillie Gifford & Co), with $26M, 0.0% of the portfolio.
In their latest quarter: 1 opened a new position, 4 added, 5 trimmed.
Who holds it
Each investor's latest 13F filing, largest stake first. What a 13F shows.
| Investor | Last change | Shares | Value | % of portfolio | Filed for |
|---|---|---|---|---|---|
| Baillie Gifford Baillie Gifford & Co |
Trimmed | 902,388 | $26M | 0.0% | Q3 2026 |
| Chuck Royce Royce Investment Partners |
Added | 759,633 | $22M | 0.2% | Q3 2026 |
| David Shaw D. E. Shaw & Co. |
Trimmed | 366,845 | $15M | 0.0% | Q2 2026 |
| Arrowstreet Capital | Trimmed | 230,903 | $10M | 0.0% | Q2 2026 |
| Cliff Asness AQR Capital Management |
Added | 194,477 | $8M | 0.0% | Q2 2026 |
| Eddie Brown Brown Capital Management |
Added | 239,521 | $7M | 1.3% | Q3 2026 |
| Brandon Haley Holocene Advisors |
Added | 95,716 | $4M | 0.0% | Q2 2026 |
| Two Sigma Two Sigma Investments |
Trimmed | 90,340 | $4M | 0.0% | Q2 2026 |
| Paul Marshall Marshall Wace |
New position | 53,261 | $2M | 0.0% | Q2 2026 |
| Ensign Peak Ensign Peak Advisors |
Trimmed | 3,050 | $126,606 | 0.0% | Q2 2026 |
Holders by quarter
| Quarter | Superinvestors holding it |
|---|---|
| Q2 2026 | 10 |
| Q1 2026 | 11 |
| Q4 2025 | 17 |
| Q3 2025 | 15 |
| Q2 2025 | 11 |
| Q1 2025 | 9 |
| Q4 2024 | 7 |
| Q3 2024 | 10 |
Questions about American Superconductor
Which superinvestors own American Superconductor?
10 of the superinvestors we track hold American Superconductor (AMSC) in their latest 13F filings, $98M in total. Baillie Gifford, Chuck Royce, David Shaw, Arrowstreet Capital, Cliff Asness, Eddie Brown.
Who is the largest superinvestor holder of AMSC?
The largest holder is Baillie Gifford (Baillie Gifford & Co), with $26M, 0.0% of the portfolio.
From American Superconductor's annual reports filed with the SEC (XBRL data), standardised by Investingly. Information only, not investment advice.