AMERICAN SUPERCONDUCTOR CORP /DE/ - Common Stock (AMSC)
CUSIP: 030111207
Q3 2025 13F Holders as of 30 Sep 2025
- Type / Class
- Equity / Common Stock
- Shares outstanding
- 47,657,189
- Total 13F shares
- 32,698,988
- Share change
- -393,345
- Total reported value
- $1,940,981,155
- Put/Call ratio
- 62%
- Price per share
- $59.39
- Number of holders
- 270
- Value change
- +$32,935,326
- Number of buys
- 160
- Number of sells
- 110
Quarterly Holders Quick Answers
What is CUSIP 030111207?
CUSIP 030111207 identifies AMSC - AMERICAN SUPERCONDUCTOR CORP /DE/ - Common Stock in SEC institutional holdings data.
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Related Filing Research
- Latest 13F filings for newly reported positions.
- Latest Schedule 13D/13G reports for ownership changes outside 13F cadence.
- Latest 10-Q/10-K reports for financial context tied to this issuer.
- Recent insider transactions for executive and insider activity.
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Recent filing periods for CUSIP 030111207:
Top shareholders of AMSC - AMERICAN SUPERCONDUCTOR CORP /DE/ - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
|
Company |
7.1%
from 13D/G
|
3,420,039
|
$125,481,230 | — | 30 Jun 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
5.1%
|
2,447,047
|
$89,782,154 | — | 30 Jun 2025 | |
| Daniel P. McGahn |
3/4/5
|
Chairman, President and CEO, Director |
2.5%
|
1,196,022
|
$65,717,243 | -$9,657,151 | 04 Aug 2025 | |
| AWM Investment Company, Inc. |
13F
|
Company |
3.3%
|
1,558,478
|
$57,180,558 | — | 30 Jun 2025 | |
| BAILLIE GIFFORD & CO |
13F
13D/G
|
Company |
4.2%
from 13D/G
|
1,452,679
|
$53,298,792 | — | 30 Jun 2025 | |
| Hood River Capital Management LLC |
13F
|
Company |
2.5%
|
1,168,906
|
$42,887,161 | — | 30 Jun 2025 | |
| Atreides Management, LP |
13F
|
Company |
2.3%
|
1,104,458
|
$40,522,564 | — | 30 Jun 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
2.2%
|
1,029,047
|
$37,755,734 | — | 30 Jun 2025 | |
| STATE STREET CORP |
13F
|
Company |
2.1%
|
1,020,165
|
$37,429,854 | — | 30 Jun 2025 | |
| Nuveen, LLC |
13F
|
Company |
2.1%
|
997,902
|
$36,613,025 | — | 30 Jun 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2%
|
940,111
|
$34,496,640 | — | 30 Jun 2025 | |
| DRIEHAUS CAPITAL MANAGEMENT LLC |
13F
|
Company |
1.8%
|
839,847
|
$30,813,986 | — | 30 Jun 2025 | |
| MACQUARIE GROUP LTD |
13F
|
Company |
1.7%
|
822,179
|
$30,166,000 | — | 30 Jun 2025 | |
| ROYCE & ASSOCIATES LP |
13F
|
Company |
1.7%
|
811,732
|
$29,782,447 | — | 30 Jun 2025 | |
| Telemark Asset Management, LLC |
13F
|
Company |
1.4%
|
690,000
|
$25,316,100 | — | 30 Jun 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
1.4%
|
689,691
|
$25,304,763 | — | 30 Jun 2025 | |
| OBERWEIS ASSET MANAGEMENT INC/ |
13F
|
Company |
1.4%
|
668,200
|
$24,516,258 | — | 30 Jun 2025 | |
| MORGAN STANLEY |
13F
|
Company |
1.2%
|
570,356
|
$20,926,399 | — | 30 Jun 2025 | |
| John W. Kosiba Jr. |
3/4/5
|
SVP, CFO & Treasurer |
0.74%
|
352,890
|
$19,454,543 | -$5,224,458 | 04 Aug 2025 | |
| EMERALD ADVISERS, LLC |
13F
|
Company |
1%
|
500,054
|
$18,346,981 | — | 30 Jun 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
1%
|
480,753
|
$17,637,989 | — | 30 Jun 2025 | |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
|
Company |
0.91%
|
431,589
|
$15,835,001 | — | 30 Jun 2025 | |
| Legal & General Group Plc |
13F
|
Company |
0.88%
|
417,039
|
$15,301,160 | — | 30 Jun 2025 | |
| ESSEX INVESTMENT MANAGEMENT CO LLC |
13F
|
Company |
0.73%
|
346,042
|
$12,696,281 | — | 30 Jun 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.72%
|
341,549
|
$12,531,434 | — | 30 Jun 2025 | |
| HEIGHTS CAPITAL MANAGEMENT, INC |
13F
|
Company |
0.71%
|
340,102
|
$12,478,342 | — | 30 Jun 2025 | |
| FIRST TRUST ADVISORS LP |
13F
|
Company |
0.71%
|
337,574
|
$12,385,590 | — | 30 Jun 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.68%
|
322,958
|
$11,849,329 | — | 30 Jun 2025 | |
| Allspring Global Investments Holdings, LLC |
13F
|
Company |
0.57%
|
273,396
|
$9,836,788 | — | 30 Jun 2025 | |
| TUDOR INVESTMENT CORP ET AL |
13F
|
Company |
0.55%
|
260,121
|
$9,543,839 | — | 30 Jun 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.53%
|
251,807
|
$9,238,799 | — | 30 Jun 2025 | |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP |
13F
|
Company |
0.5%
|
236,396
|
$8,673,369 | — | 30 Jun 2025 | |
| WELLS FARGO & COMPANY/MN |
13F
|
Company |
0.46%
|
220,796
|
$8,101,006 | — | 30 Jun 2025 | |
| Hillsdale Investment Management Inc. |
13F
|
Company |
0.46%
|
220,000
|
$8,071,800 | — | 30 Jun 2025 | |
| EMERALD MUTUAL FUND ADVISERS TRUST |
13F
|
Company |
0.45%
|
213,914
|
$7,848,505 | — | 30 Jun 2025 | |
| ALGERT GLOBAL LLC |
13F
|
Company |
0.43%
|
205,705
|
$7,547,000 | — | 30 Jun 2025 | |
| Ghisallo Capital Management LLC |
13F
|
Company |
0.42%
|
200,000
|
$7,338,000 | — | 30 Jun 2025 | |
| UBS Group AG |
13F
|
Company |
0.42%
|
198,401
|
$7,279,333 | — | 30 Jun 2025 | |
| Lisanti Capital Growth, LLC |
13F
|
Company |
0.38%
|
180,750
|
$6,631,718 | — | 30 Jun 2025 | |
| PANAGORA ASSET MANAGEMENT INC |
13F
|
Company |
0.36%
|
171,988
|
$6,310,240 | — | 30 Jun 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.35%
|
169,141
|
$6,205,784 | — | 30 Jun 2025 | |
| AQR CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.35%
|
168,890
|
$6,196,575 | — | 30 Jun 2025 | |
| RAYMOND JAMES FINANCIAL INC |
13F
|
Company |
0.35%
|
166,914
|
$6,124,075 | — | 30 Jun 2025 | |
| JANE STREET GROUP, LLC |
13F
|
Company |
0.34%
|
164,105
|
$6,021,012 | — | 30 Jun 2025 | |
| Trexquant Investment LP |
13F
|
Company |
0.33%
|
159,483
|
$5,851,431 | — | 30 Jun 2025 | |
| Invesco Ltd. |
13F
|
Company |
0.33%
|
159,292
|
$5,844,424 | — | 30 Jun 2025 | |
| ArrowMark Colorado Holdings LLC |
13F
|
Company |
0.33%
|
156,432
|
$5,739,490 | — | 30 Jun 2025 | |
| Andrew Hill Investment Advisors, Inc. |
13F
|
Company |
0.32%
|
152,779
|
$5,605,481 | — | 30 Jun 2025 | |
| OSAIC HOLDINGS, INC. |
13F
|
Company |
0.32%
|
151,278
|
$5,550,043 | — | 30 Jun 2025 | |
| Squarepoint Ops LLC |
13F
|
Company |
0.31%
|
147,224
|
$5,401,649 | — | 30 Jun 2025 |
Institutional Holders of AMERICAN SUPERCONDUCTOR CORP /DE/ - Common Stock (AMSC) as of Q3 2025
As of 30 Sep 2025,
AMERICAN SUPERCONDUCTOR CORP /DE/ - Common Stock (AMSC) was held by
270 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
32,698,988 shares.
The largest 10 holders included
BlackRock, Inc., VANGUARD GROUP INC, BAILLIE GIFFORD & CO, Driehaus Capital Management LLC, GOLDMAN SACHS GROUP INC, STATE STREET CORP, GEODE CAPITAL MANAGEMENT, LLC, Nuveen, LLC, FULLER & THALER ASSET MANAGEMENT, INC., and Atreides Management, LP.
This page lists
270
institutional shareholders reporting positions in this security
for the Q3 2025 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q3 2025 vs Q2 2025 Across Filers
Q2 2025 holders
228
Q3 2025 holders
270
Holder diff
42
| Investor | Q2 2025 Shares | Q3 2025 Shares | Share Diff | Share Chg % | Q2 2025 Value $ | Q3 2025 Value $ | Value Diff $ | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.
An asterisk sign (*) next to the price indicates that the price is likely invalid.