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 | $84.43M 3,427,893 shares | 0.00% | +707.11K(+26.00%)Added | SEC filing ↗ Feb 7, 2025 | ▾ |
| 02 | VANGUARD GROUP INC CIK 102909 · View history | $54.75M 2,222,935 shares | 0.00% | -203.34K(-8.40%)Reduced | SEC filing ↗ Feb 11, 2025 | ▾ |
| 03 | BAILLIE GIFFORD & CO CIK 1088875 · View history | $40.63M 1,649,790 shares | 0.03% | -456.61K(-21.70%)Reduced | SEC filing ↗ Jan 31, 2025 | ▾ |
| 04 | AWM Investment Company, Inc. CIK 1535264 · View history | $37.28M 1,513,478 shares | 4.54% | -205.59K(-12.00%)Reduced | SEC filing ↗ Feb 18, 2025 | ▾ |
| 05 | Hood River Capital Management LLC CIK 1578177 · View history | $30.45M 1,236,146 shares | 0.45% | -195.79K(-13.70%)Reduced | SEC filing ↗ Feb 14, 2025 | ▾ |
| 06 | MACQUARIE GROUP LTD CIK 1418333 · View history | $25.62M 1,040,179 shares | 0.03% | +44.61K(+4.50%)Added | SEC filing ↗ Feb 14, 2025 | ▾ |
| 07 | Driehaus Capital Management LLC CIK 938206 · View history | $23.22M 942,698 shares | 0.19% | +143.94K(+18.00%)Added | SEC filing ↗ Feb 14, 2025 | ▾ |
| 08 | STATE STREET CORP CIK 93751 · View history | $22.40M 909,295 shares | 0.00% | +3.04K(+0.30%)Added | SEC filing ↗ Feb 14, 2025 | ▾ |
| 09 | Nuveen Asset Management, LLC CIK 1521019 · View history | $21.64M 878,624 shares | 0.01% | -151.69K(-14.70%)Reduced | SEC filing ↗ Feb 14, 2025 | ▾ |
| 10 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $21.10M 856,455 shares | 0.00% | +9.04K(+1.10%)Added | SEC filing ↗ Feb 12, 2025 | ▾ |
| 11 | ROYCE & ASSOCIATES LP CIK 906304 · View history | $20.66M 838,932 shares | 0.19% | -116.24K(-12.20%)Reduced | SEC filing ↗ Feb 10, 2025 | ▾ |
| 12 | OBERWEIS ASSET MANAGEMENT INC/ CIK 937886 · View history | $16.36M 664,400 shares | 0.77% | 0(0.00%)Unchanged | SEC filing ↗ Feb 14, 2025 | ▾ |
| 13 | DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history | $16.12M 654,299 shares | 0.00% | +46.35K(+7.60%)Added | SEC filing ↗ Feb 13, 2025 | ▾ |
| 14 | Telemark Asset Management, LLC CIK 1420816 · View history | $14.78M 600,000 shares | 1.47% | 0(0.00%)Unchanged | SEC filing ↗ Feb 10, 2025 | ▾ |
| 15 | WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · Amended · View history | $11.36M 461,230 shares | 0.00% | +461.23KNew | SEC filing ↗ Feb 12, 2025 | ▾ |
| 16 | MORGAN STANLEY CIK 895421 · Amended · View history | $10.79M 438,171 shares | 0.00% | +60.77K(+16.10%)Added | SEC filing ↗ May 15, 2025 | ▾ |
| 17 | ESSEX INVESTMENT MANAGEMENT CO LLC CIK 201772 · View history | $10.59M 429,876 shares | 1.90% | -34.63K(-7.50%)Reduced | SEC filing ↗ Feb 7, 2025 | ▾ |
| 18 | UBS Group AG CIK 1610520 · View history | $10.49M 425,877 shares | 0.00% | +365.05K(+600.10%)Added | SEC filing ↗ Feb 14, 2025 | ▾ |
| 19 | RAYMOND JAMES FINANCIAL INC CIK 720005 · Amended · View history | $10.19M 413,646 shares | 0.00% | — | SEC filing ↗ Apr 23, 2025 | ▾ |
| 20 | Allspring Global Investments Holdings, LLC CIK 1890906 · View history | $9.29M 377,375 shares | 0.01% | -56.77K(-13.10%)Reduced | SEC filing ↗ Jan 29, 2025 | ▾ |
Showing 20 / 191 institutions. The complete set is available through the API.
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