American Superconductor Corp /De/ (NASDAQ:AMSC) showed up in the 13F filings of 234 institutional investors as of December 2025.
| Owner Name | Date | Shares Held | Change (QoQ) | Change (%) | Value (USD) |
|---|---|---|---|---|---|
| BlackRock, Inc. | 31 Mar, 2026 | 3,982,650 | 232,247 | 6.19% | $134,812,704.00 |
| BlackRock, Inc. | 31 Mar, 2026 | 3,750,403 | 121,107 | 3.34% | $107,936,611.00 |
| VANGUARD GROUP INC | 31 Mar, 2026 | 3,526,632 | 576,831 | 19.55% | $101,496,470.00 |
| VANGUARD CAPITAL MANAGEMENT LLC | 31 Mar, 2026 | 2,039,468 | 2,039,468 | 0.00% | $69,035,992.00 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 31 Mar, 2026 | 1,711,677 | 1,711,677 | 0.00% | $57,940,266.00 |
| Goldman Sachs Group Inc | 31 Mar, 2026 | 1,564,574 | 390,467 | 33.26% | $45,028,440.00 |
| BAILLIE GIFFORD & CO | 31 Mar, 2026 | 1,506,841 | 79,509 | 5.57% | $43,366,884.00 |
| BAILLIE GIFFORD & CO | 31 Mar, 2026 | 1,447,419 | -59,422 | -3.94% | $48,995,134.00 |
| State Street Corp | 31 Mar, 2026 | 1,261,071 | 68,978 | 5.79% | $42,687,253.00 |
| State Street Corp | 31 Mar, 2026 | 1,192,093 | 56,215 | 4.95% | $34,308,437.00 |
| GEODE CAPITAL MANAGEMENT, LLC | 31 Mar, 2026 | 1,169,152 | 78,442 | 7.19% | $39,583,990.00 |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC | 31 Mar, 2026 | 1,139,793 | 1,139,793 | 0.00% | $38,581,993.00 |
| GEODE CAPITAL MANAGEMENT, LLC | 31 Mar, 2026 | 1,090,710 | 20,855 | 1.95% | $31,396,276.00 |
| Atreides Management, LP | 31 Mar, 2026 | 1,044,193 | 272,698 | 35.35% | $30,051,875.00 |
| Nuveen, LLC | 31 Mar, 2026 | 1,020,947 | 59,979 | 6.24% | $34,559,056.00 |
| Nuveen, LLC | 31 Mar, 2026 | 960,968 | 134,816 | 16.32% | $27,656,659.00 |
| OBERWEIS ASSET MANAGEMENT INC/ | 31 Mar, 2026 | 849,900 | 14,000 | 1.67% | $28,769,115.00 |
| OBERWEIS ASSET MANAGEMENT INC/ | 31 Mar, 2026 | 835,900 | 170,200 | 25.57% | $24,057,202.00 |
| AWM Investment Company, Inc. | 31 Mar, 2026 | 801,604 | 47,384 | 6.28% | $27,134,295.00 |
| FIRST TRUST ADVISORS LP | 31 Mar, 2026 | 778,268 | 95,301 | 13.95% | $26,344,371.00 |