Institutional Ownership American Superconductor Corp (AMSC)
This table provides information about the institutional ownership of American Superconductor Corp (AMSC). We have compiled data on the 298 institutions that hold shares in the stock, with a total of 32.4 Million shares, which have been reported (via 13F filing form) to have a value of $1.1 Billion.
| Holding | Report Date | shares Held | Holding Value (Reported) | Last Trade | Trade History |
|---|---|---|---|---|---|
|
Vanguard Group Inc
Valley Forge, PA |
Nov 07, 2025 Q3 2025 |
2,949,801
shares
|
$101 Million
0.0% of portfolio
|
Q3 2025
Added 20.55%
|
|
|
Black Rock Inc.
New York, NY |
Aug 13, 2024 Q2 2024 |
2,544,019
shares
|
$86.7 Million
0.0% of portfolio
|
Q2 2024
Added 240.9%
|
|
|
Baillie Gifford & CO
|
Oct 31, 2025 Q3 2025 |
1,427,332
shares
|
$48.6 Million
0.07% of portfolio
|
Q3 2025
Reduced 1.74%
|
|
|
Driehaus Capital Management LLC
Chicago, IL |
Nov 14, 2025 Q3 2025 |
1,218,944
shares
|
$41.5 Million
0.61% of portfolio
|
Q3 2025
Added 45.14%
|
|
|
Goldman Sachs Group Inc
New York, NY |
Nov 14, 2025 Q3 2025 |
1,174,107
shares
|
$40 Million
0.01% of portfolio
|
Q3 2025
Added 14.1%
|
|
|
State Street Corp
Boston, MA |
Nov 14, 2025 Q3 2025 |
1,135,878
shares
|
$38.7 Million
0.0% of portfolio
|
Q3 2025
Added 11.34%
|
|
|
Geode Capital Management, LLC
Boston, MA |
Nov 12, 2025 Q3 2025 |
1,069,855
shares
|
$36.5 Million
0.0% of portfolio
|
Q3 2025
Added 13.8%
|
|
|
Nuveen Asset Management, LLC
Chicago, IL |
Feb 14, 2025 Q4 2024 |
878,624
shares
|
$29.9 Million
0.01% of portfolio
|
Q4 2024
Reduced 14.72%
|
|
|
Nuveen, LLC
Charlotte, NC |
Nov 12, 2025 Q3 2025 |
826,152
shares
|
$28.2 Million
0.01% of portfolio
|
Q3 2025
Reduced 17.21%
|
|
|
Fuller & Thaler Asset Management, Inc.
San Mateo, CA |
Nov 13, 2025 Q3 2025 |
809,945
shares
|
$27.6 Million
0.17% of portfolio
|
Q3 2025
New holding
|
|
|
Atreides Management, LP
Boston, MA |
Nov 14, 2025 Q3 2025 |
771,495
shares
|
$26.3 Million
0.95% of portfolio
|
Q3 2025
Reduced 30.15%
|
|
|
Arrowstreet Capital, Limited Partnership
Boston, MA |
Nov 13, 2025 Q3 2025 |
760,457
shares
|
$25.9 Million
0.03% of portfolio
|
Q3 2025
Added 221.69%
|
|
|
D. E. Shaw & Co., Inc.
New York, NY |
Nov 14, 2025 Q3 2025 |
752,703
shares
|
$25.7 Million
0.03% of portfolio
|
Q3 2025
Added 463.21%
|
|
|
Awm Investment Company, Inc.
New York, NY |
Nov 13, 2025 Q3 2025 |
745,470
shares
|
$25.4 Million
5.43% of portfolio
|
Q3 2025
Reduced 52.17%
|
|
|
Telemark Asset Management, LLC
Boston, MA |
Nov 10, 2025 Q3 2025 |
690,000
shares
|
$23.5 Million
4.11% of portfolio
|
Q3 2025
Added 15.0%
|
|
|
Oberweis Asset Management Inc
Lisle, IL |
Nov 17, 2025 Q3 2025 |
665,700
shares
|
$22.7 Million
1.64% of portfolio
|
Q3 2025
Reduced 0.37%
|
|
|
Emerald Advisers, LLC
|
Oct 30, 2025 Q3 2025 |
521,183
shares
|
$17.8 Million
1.05% of portfolio
|
Q3 2025
Added 4.23%
|
|
|
Dimensional Fund Advisors LP
Austin, TX |
Nov 12, 2025 Q3 2025 |
471,484
shares
|
$16.1 Million
0.01% of portfolio
|
Q3 2025
Reduced 1.93%
|
|
|
Macquarie Group LTD
Australia, C3 |
Nov 13, 2025 Q3 2025 |
465,221
shares
|
$15.9 Million
0.03% of portfolio
|
Q3 2025
Reduced 43.42%
|
|
|
First Trust Advisors LP
Wheaton, IL |
Nov 12, 2025 Q3 2025 |
458,391
shares
|
$15.6 Million
0.02% of portfolio
|
Q3 2025
Added 35.79%
|
|
|
Wellington Management Group LLP
Boston, MA |
Nov 14, 2025 Q3 2025 |
399,246
shares
|
$13.6 Million
0.0% of portfolio
|
Q3 2025
Reduced 7.49%
|
|
|
Price T Rowe Associates Inc
Baltimore, MD |
Nov 14, 2025 Q3 2025 |
396,332
shares
|
$13.5 Million
0.0% of portfolio
|
Q3 2025
Added 1322.94%
|
|
|
Northern Trust Corp
Chicago, IL |
Nov 14, 2025 Q3 2025 |
392,267
shares
|
$13.4 Million
0.0% of portfolio
|
Q3 2025
Added 14.85%
|
|
|
Charles Schwab Investment Management Inc
San Francisco, CA |
Nov 10, 2025 Q3 2025 |
388,226
shares
|
$13.2 Million
0.0% of portfolio
|
Q3 2025
Added 20.21%
|
|
|
Royce & Associates LP
|
Nov 12, 2025 Q3 2025 |
357,580
shares
|
$12.2 Million
0.23% of portfolio
|
Q3 2025
Reduced 55.95%
|
|