AMERICAN SUPERCONDUCTOR CORP /DE/ - Common Stock (AMSC)
CUSIP: 030111207
Q4 2025 13F Holders as of 31 Dec 2025
- Type / Class
- Equity / Common Stock
- Shares outstanding
- 47,694,720
- Total 13F shares
- 33,047,843
- Share change
- -51,086
- Total reported value
- $951,742,537
- Put/Call ratio
- 42%
- Price per share
- $28.78
- Number of holders
- 237
- Value change
- -$100,421,486
- Number of buys
- 141
- Number of sells
- 133
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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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
|
3,629,296
|
$215,543,880 | — | 30 Sep 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
6.2%
|
2,949,801
|
$175,188,681 | — | 30 Sep 2025 | |
| BAILLIE GIFFORD & CO |
13F
13D/G
|
Company |
4.2%
from 13D/G
|
1,427,332
|
$84,769,248 | — | 30 Sep 2025 | |
| DRIEHAUS CAPITAL MANAGEMENT LLC |
13F
|
Company |
2.6%
|
1,218,944
|
$72,393,084 | — | 30 Sep 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
2.5%
|
1,174,107
|
$69,730,214 | — | 30 Sep 2025 | |
| STATE STREET CORP |
13F
|
Company |
2.4%
|
1,135,878
|
$67,459,794 | — | 30 Sep 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 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2.2%
|
1,069,855
|
$63,548,422 | — | 30 Sep 2025 | |
| Nuveen, LLC |
13F
|
Company |
1.7%
|
826,152
|
$49,065,168 | — | 30 Sep 2025 | |
| FULLER & THALER ASSET MANAGEMENT, INC. |
13F
|
Company |
1.7%
|
809,945
|
$48,102,610 | — | 30 Sep 2025 | |
| Atreides Management, LP |
13F
|
Company |
1.6%
|
771,495
|
$45,819,088 | — | 30 Sep 2025 | |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP |
13F
|
Company |
1.6%
|
760,457
|
$45,163,541 | — | 30 Sep 2025 | |
| D. E. Shaw & Co., Inc. |
13F
|
Company |
1.6%
|
752,703
|
$44,703,031 | — | 30 Sep 2025 | |
| AWM Investment Company, Inc. |
13F
|
Company |
1.6%
|
745,470
|
$44,273,463 | — | 30 Sep 2025 | |
| Telemark Asset Management, LLC |
13F
|
Company |
1.4%
|
690,000
|
$40,979,100 | — | 30 Sep 2025 | |
| OBERWEIS ASSET MANAGEMENT INC/ |
13F
|
Company |
1.4%
|
665,700
|
$39,535,923 | — | 30 Sep 2025 | |
| EMERALD ADVISERS, LLC |
13F
|
Company |
1.1%
|
521,183
|
$30,953,058 | — | 30 Sep 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
0.99%
|
471,484
|
$28,006,294 | — | 30 Sep 2025 | |
| MACQUARIE GROUP LTD |
13F
|
Company |
0.98%
|
465,221
|
$27,629,000 | — | 30 Sep 2025 | |
| FIRST TRUST ADVISORS LP |
13F
|
Company |
0.96%
|
458,391
|
$27,223,841 | — | 30 Sep 2025 | |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
|
Company |
0.84%
|
399,246
|
$23,711,220 | — | 30 Sep 2025 | |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
|
Company |
0.83%
|
396,332
|
$23,540,000 | — | 30 Sep 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.82%
|
392,267
|
$23,296,737 | — | 30 Sep 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.81%
|
388,226
|
$23,056,742 | — | 30 Sep 2025 | |
| ROYCE & ASSOCIATES LP |
13F
|
Company |
0.75%
|
357,580
|
$21,236,676 | — | 30 Sep 2025 | |
| MORGAN STANLEY |
13F
|
Company |
0.7%
|
335,765
|
$19,941,140 | — | 30 Sep 2025 | |
| John W. Kosiba Jr. |
3/4/5
|
SVP, CFO & Treasurer |
0.74%
|
352,890
|
$19,454,543 | -$5,224,458 | 04 Aug 2025 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
0.68%
|
323,989
|
$19,241,707 | — | 30 Sep 2025 | |
| EMERALD MUTUAL FUND ADVISERS TRUST |
13F
|
Company |
0.65%
|
307,737
|
$18,276,500 | — | 30 Sep 2025 | |
| ALGERT GLOBAL LLC |
13F
|
Company |
0.6%
|
287,880
|
$17,097,000 | — | 30 Sep 2025 | |
| Invesco Ltd. |
13F
|
Company |
0.6%
|
285,406
|
$16,950,262 | — | 30 Sep 2025 | |
| AXIOM INVESTORS LLC /DE |
13F
|
Company |
0.55%
|
264,660
|
$15,718,157 | — | 30 Sep 2025 | |
| Legal & General Group Plc |
13F
|
Company |
0.54%
|
259,563
|
$15,415,449 | — | 30 Sep 2025 | |
| Qube Research & Technologies Ltd |
13F
|
Company |
0.54%
|
257,595
|
$15,298,567 | — | 30 Sep 2025 | |
| ESSEX INVESTMENT MANAGEMENT CO LLC |
13F
|
Company |
0.51%
|
245,581
|
$14,585,056 | — | 30 Sep 2025 | |
| WELLS FARGO & COMPANY/MN |
13F
|
Company |
0.46%
|
217,826
|
$12,936,686 | — | 30 Sep 2025 | |
| PANAGORA ASSET MANAGEMENT INC |
13F
|
Company |
0.42%
|
202,594
|
$12,032,058 | — | 30 Sep 2025 | |
| Allspring Global Investments Holdings, LLC |
13F
|
Company |
0.42%
|
199,571
|
$11,808,616 | — | 30 Sep 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.42%
|
198,030
|
$11,761,001 | — | 30 Sep 2025 | |
| UBS Group AG |
13F
|
Company |
0.41%
|
193,734
|
$11,505,862 | — | 30 Sep 2025 | |
| TUDOR INVESTMENT CORP ET AL |
13F
|
Company |
0.37%
|
175,039
|
$10,395,566 | — | 30 Sep 2025 | |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC |
13F
|
Company |
0.36%
|
171,606
|
$10,191,680 | — | 30 Sep 2025 | |
| AQR CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.35%
|
168,751
|
$10,022,123 | — | 30 Sep 2025 | |
| RAYMOND JAMES FINANCIAL INC |
13F
|
Company |
0.35%
|
167,316
|
$9,936,896 | — | 30 Sep 2025 | |
| Palisades Investment Partners, LLC |
13F
|
Company |
0.3%
|
141,109
|
$8,380,382 | — | 30 Sep 2025 | |
| JANE STREET GROUP, LLC |
13F
|
Company |
0.29%
|
136,102
|
$8,083,097 | — | 30 Sep 2025 | |
| CASTLEARK MANAGEMENT LLC |
13F
|
Company |
0.28%
|
135,617
|
$8,054,294 | — | 30 Sep 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.28%
|
133,520
|
$7,929,763 | — | 30 Sep 2025 | |
| NEXT CENTURY GROWTH INVESTORS LLC |
13F
|
Company |
0.27%
|
128,220
|
$7,614,985 | — | 30 Sep 2025 | |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP |
13F
|
Company |
0.27%
|
127,171
|
$7,552,686 | — | 30 Sep 2025 |
Institutional Holders of AMERICAN SUPERCONDUCTOR CORP /DE/ - Common Stock (AMSC) as of Q4 2025
As of 31 Dec 2025,
AMERICAN SUPERCONDUCTOR CORP /DE/ - Common Stock (AMSC) was held by
237 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
33,047,843 shares.
The largest 10 holders included
BlackRock, Inc., VANGUARD GROUP INC, BAILLIE GIFFORD & CO, STATE STREET CORP, GEODE CAPITAL MANAGEMENT, LLC, Atreides Management, LP, Nuveen, LLC, OBERWEIS ASSET MANAGEMENT INC/, GOLDMAN SACHS GROUP INC, and EMERALD ADVISERS, LLC.
This page lists
237
institutional shareholders reporting positions in this security
for the Q4 2025 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
270
Q4 2025 holders
237
Holder diff
-33
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 Value $ | Q4 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.