Institutional Ownership
American Superconductor Corp
CUSIP 030111207SHS NEWAMSCQ1 2026
13D / 13G Filings
34
Schedule 13D/13G on record
Beneficial Filers
14
Distinct reporting persons
Largest Stake
9.4%
Max % of class reported
Institutional Holders
234
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
34 filings · latest Jan 30, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Jan 30, 2026 | The Vanguard Group | 13G/A | 7.4% | 3.53M | SEC |
| 2 | Apr 17, 2025 | Blackrock, Inc. | 13G/A | 7.1% | 2.80M | SEC |
| 3 | Feb 12, 2025 | Baillie Gifford &Amp; Co | 13G/A | 4.2% | 1.65M | SEC |
| 4 | Feb 5, 2025 | Blackrock, Inc. | 13G/A | 8.7% | 3.43M | SEC |
| 5 | Nov 12, 2024 | Vanguard Group Inc | 13G/A | 6.3% | 2.43M | SEC |
| 6 | Nov 8, 2024 | Blackrock, Inc. | 13G | 7.1% | 2.72M | SEC |
| 7 | Nov 4, 2024 | Baillie Gifford &Amp; Co | 13G/A | 5.5% | 2.11M | SEC |
| 8 | Nov 4, 2024 | Vanguard Group Inc | 13G | 6.3% | 2.43M | SEC |
| 9 | Oct 22, 2024 | Blackrock, Inc. | 13G | 7.1% | 2.72M | SEC |
| 10 | Aug 9, 2024 | Awm Investment Company, Inc. | 13G/A | 4.6% | 1.72M | SEC |
24 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for American Superconductor Corp.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Blackrock, Inc. | 3.98M | $134.81M |
| 2 | Baillie Gifford & Co | 1.45M | $49.00M |
| 3 | State Street Corp | 1.26M | $42.69M |
| 4 | Geode Capital Management, LLC | 1.17M | $39.58M |
| 5 | Barrow Hanley Mewhinney & Strauss LLC | 1.14M | $38.58M |
| 6 | Nuveen, LLC | 1.02M | $34.56M |
| 7 | Oberweis Asset Management Inc/ | 849.9K | $28.77M |
| 8 | Awm Investment Company, Inc. | 801.6K | $27.13M |
| 9 | First Trust Advisors LP | 778.3K | $26.34M |
| 10 | Emerald Advisers, LLC | 757.4K | $25.64M |