AMERICAN SUPERCONDUCTOR CORP /DE/ AMSC
CIK 0000880807 · CUSIP 030111207
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | BlackRock, Inc. CIK 2012383 · View history | $59.11M 3,258,423 shares | 0.00% | -169.47K(-4.90%)Reduced | SEC filing ↗ May 2, 2025 | ▾ |
| 02 | VANGUARD GROUP INC CIK 102909 · View history | $41.50M 2,287,585 shares | 0.00% | +64.65K(+2.90%)Added | SEC filing ↗ May 9, 2025 | ▾ |
| 03 | AWM Investment Company, Inc. CIK 1535264 · View history | $28.27M 1,558,478 shares | 3.89% | +45.00K(+3.00%)Added | SEC filing ↗ May 15, 2025 | ▾ |
| 04 | BAILLIE GIFFORD & CO CIK 1088875 · View history | $27.55M 1,518,890 shares | 0.02% | -130.90K(-7.90%)Reduced | SEC filing ↗ May 7, 2025 | ▾ |
| 05 | Hood River Capital Management LLC CIK 1578177 · View history | $22.48M 1,239,096 shares | 0.38% | +2.95K(+0.20%)Added | SEC filing ↗ May 15, 2025 | ▾ |
| 06 | MACQUARIE GROUP LTD CIK 1418333 · Amended · View history | $18.63M 1,026,822 shares | 0.02% | -13.36K(-1.30%)Reduced | SEC filing ↗ Aug 14, 2025 | ▾ |
| 07 | STATE STREET CORP CIK 93751 · View history | $16.15M 890,047 shares | 0.00% | -19.25K(-2.10%)Reduced | SEC filing ↗ May 15, 2025 | ▾ |
| 08 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $16.00M 881,681 shares | 0.00% | +25.23K(+2.90%)Added | SEC filing ↗ May 13, 2025 | ▾ |
| 09 | ROYCE & ASSOCIATES LP CIK 906304 · View history | $15.73M 867,342 shares | 0.17% | +28.41K(+3.40%)Added | SEC filing ↗ May 6, 2025 | ▾ |
| 10 | Driehaus Capital Management LLC CIK 938206 · View history | $15.23M 839,843 shares | 0.15% | -102.86K(-10.90%)Reduced | SEC filing ↗ May 15, 2025 | ▾ |
| 11 | Atreides Management, LP CIK 1777813 · View history | $14.95M 824,040 shares | 0.54% | +824.04KNew | SEC filing ↗ May 15, 2025 | ▾ |
| 12 | Nuveen, LLC CIK 1871926 · View history | $14.12M 778,566 shares | 0.00% | — | SEC filing ↗ May 12, 2025 | ▾ |
| 13 | DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history | $12.12M 668,152 shares | 0.00% | +13.85K(+2.10%)Added | SEC filing ↗ May 13, 2025 | ▾ |
| 14 | OBERWEIS ASSET MANAGEMENT INC/ CIK 937886 · View history | $12.12M 668,200 shares | 0.60% | +3.80K(+0.60%)Added | SEC filing ↗ May 15, 2025 | ▾ |
| 15 | Telemark Asset Management, LLC CIK 1420816 · View history | $10.88M 600,000 shares | 1.42% | 0(0.00%)Unchanged | SEC filing ↗ May 12, 2025 | ▾ |
| 16 | MORGAN STANLEY CIK 895421 · View history | $9.25M 509,897 shares | 0.00% | +71.73K(+16.40%)Added | SEC filing ↗ May 15, 2025 | ▾ |
| 17 | GOLDMAN SACHS GROUP INC CIK 886982 · Amended · View history | $8.74M 481,961 shares | 0.00% | +170.24K(+54.60%)Added | SEC filing ↗ May 16, 2025 | ▾ |
| 18 | Qube Research & Technologies Ltd CIK 1729829 · View history | $7.43M 409,407 shares | 0.01% | +225.43K(+122.50%)Added | SEC filing ↗ May 15, 2025 | ▾ |
| 19 | ESSEX INVESTMENT MANAGEMENT CO LLC CIK 201772 · View history | $6.75M 372,221 shares | 1.41% | -57.66K(-13.40%)Reduced | SEC filing ↗ May 7, 2025 | ▾ |
| 20 | Legal & General Group Plc CIK 764068 · View history | $6.61M 364,530 shares | 0.00% | +16.98K(+4.90%)Added | SEC filing ↗ May 15, 2025 | ▾ |
Showing 20 / 190 institutions. The complete set is available through the API.
Coverage & totals by quarter
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