AMERICAN SUPERCONDUCTOR CORP /DE/ - Common Stock (AMSC)
CUSIP: 030111207
Q2 2025 13F Holders as of 30 Jun 2025
- Type / Class
- Equity / Common Stock
- Shares outstanding
- 47,657,189
- Total 13F shares
- 32,674,926
- Share change
- +5,122,796
- Total reported value
- $1,198,934,947
- Put/Call ratio
- 76%
- Price per share
- $36.69
- Number of holders
- 228
- Value change
- +$198,037,144
- Number of buys
- 160
- Number of sells
- 74
Quarterly Holders Quick Answers
What is CUSIP 030111207?
CUSIP 030111207 identifies AMSC - AMERICAN SUPERCONDUCTOR CORP /DE/ - Common Stock in SEC institutional holdings data.
Need full ownership history?
Open the full security ownership history page.
Next holder-history checks
These links keep the next click tied to holder verification, nearby quarters, or outside-13F ownership context.
- Back to full security ownership history for the broader multi-quarter picture.
- Latest 13F filings for newly reported positions across managers.
- Latest Schedule 13D/13G reports for ownership changes outside the 13F cadence.
- SEC investors directory for manager drilldown.
Explore More Reporting Periods
Jump to adjacent filing periods for faster comparison and easier crawl discovery.
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
|
3,258,423
|
$59,107,794 | — | 31 Mar 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
4.8%
|
2,287,585
|
$41,496,791 | — | 31 Mar 2025 | |
| BAILLIE GIFFORD & CO |
13D/G
13F
|
Company |
4.2%
|
1,649,790
|
$33,210,273 | -$9,191,459 | 31 Dec 2024 | |
| AWM Investment Company, Inc. |
13F
|
Company |
3.3%
|
1,558,478
|
$28,270,791 | — | 31 Mar 2025 | |
| Hood River Capital Management LLC |
13F
|
Company |
2.6%
|
1,239,096
|
$22,477,201 | — | 31 Mar 2025 | |
| MACQUARIE GROUP LTD |
13F
|
Company |
2.2%
|
1,026,822
|
$18,627,000 | — | 31 Mar 2025 | |
| STATE STREET CORP |
13F
|
Company |
1.9%
|
890,047
|
$16,145,453 | — | 31 Mar 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
1.9%
|
881,681
|
$15,997,972 | — | 31 Mar 2025 | |
| ROYCE & ASSOCIATES LP |
13F
|
Company |
1.8%
|
867,342
|
$15,733,584 | — | 31 Mar 2025 | |
| DRIEHAUS CAPITAL MANAGEMENT LLC |
13F
|
Company |
1.8%
|
839,843
|
$15,234,752 | — | 31 Mar 2025 | |
| Atreides Management, LP |
13F
|
Company |
1.7%
|
824,040
|
$14,948,086 | — | 31 Mar 2025 | |
| Nuveen, LLC |
13F
|
Company |
1.6%
|
778,566
|
$14,123,187 | — | 31 Mar 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
1.4%
|
668,152
|
$12,122,422 | — | 31 Mar 2025 | |
| OBERWEIS ASSET MANAGEMENT INC/ |
13F
|
Company |
1.4%
|
668,200
|
$12,121,148 | — | 31 Mar 2025 | |
| Telemark Asset Management, LLC |
13F
|
Company |
1.3%
|
600,000
|
$10,884,000 | — | 31 Mar 2025 | |
| MORGAN STANLEY |
13F
|
Company |
1.1%
|
509,897
|
$9,249,540 | — | 31 Mar 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
1%
|
481,961
|
$8,742,772 | — | 31 Mar 2025 | |
| Qube Research & Technologies Ltd |
13F
|
Company |
0.86%
|
409,407
|
$7,426,643 | — | 31 Mar 2025 | |
| ESSEX INVESTMENT MANAGEMENT CO LLC |
13F
|
Company |
0.78%
|
372,221
|
$6,752,089 | — | 31 Mar 2025 | |
| Legal & General Group Plc |
13F
|
Company |
0.76%
|
364,530
|
$6,612,574 | — | 31 Mar 2025 | |
| Allspring Global Investments Holdings, LLC |
13F
|
Company |
0.72%
|
341,030
|
$6,274,952 | — | 31 Mar 2025 | |
| FIRST TRUST ADVISORS LP |
13F
|
Company |
0.69%
|
330,552
|
$5,996,213 | — | 31 Mar 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.69%
|
330,513
|
$5,995,506 | — | 31 Mar 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.65%
|
309,681
|
$5,617,613 | — | 31 Mar 2025 | |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
|
Company |
0.61%
|
289,173
|
$5,245,599 | — | 31 Mar 2025 | |
| Invesco Ltd. |
13F
|
Company |
0.51%
|
243,523
|
$4,417,507 | — | 31 Mar 2025 | |
| Trexquant Investment LP |
13F
|
Company |
0.51%
|
242,369
|
$4,396,574 | — | 31 Mar 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.47%
|
225,682
|
$4,093,871 | — | 31 Mar 2025 | |
| AQR CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.44%
|
211,164
|
$3,830,516 | — | 31 Mar 2025 | |
| Hillsdale Investment Management Inc. |
13F
|
Company |
0.4%
|
190,400
|
$3,453,856 | — | 31 Mar 2025 | |
| UBS Group AG |
13F
|
Company |
0.37%
|
175,212
|
$3,178,346 | — | 31 Mar 2025 | |
| RAYMOND JAMES FINANCIAL INC |
13F
|
Company |
0.33%
|
157,889
|
$2,864,106 | — | 31 Mar 2025 | |
| CAPITAL FUND MANAGEMENT S.A. |
13F
|
Company |
0.31%
|
147,473
|
$2,675,160 | — | 31 Mar 2025 | |
| PANAGORA ASSET MANAGEMENT INC |
13F
|
Company |
0.3%
|
145,314
|
$2,635,996 | — | 31 Mar 2025 | |
| Palisades Investment Partners, LLC |
13F
|
Company |
0.3%
|
144,604
|
$2,623,117 | — | 31 Mar 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.28%
|
131,561
|
$2,386,517 | — | 31 Mar 2025 | |
| ArrowMark Colorado Holdings LLC |
13F
|
Company |
0.27%
|
130,432
|
$2,366,036 | — | 31 Mar 2025 | |
| JANE STREET GROUP, LLC |
13F
|
Company |
0.26%
|
121,539
|
$2,204,717 | — | 31 Mar 2025 | |
| TWINBEECH CAPITAL LP |
13F
|
Company |
0.24%
|
115,458
|
$2,094,408 | — | 31 Mar 2025 | |
| Cubist Systematic Strategies, LLC |
13F
|
Company |
0.23%
|
109,285
|
$1,982,427 | — | 31 Mar 2025 | |
| Connor, Clark & Lunn Investment Management Ltd. |
13F
|
Company |
0.23%
|
108,571
|
$1,969,478 | — | 31 Mar 2025 | |
| GMT CAPITAL CORP |
13F
|
Company |
0.23%
|
108,066
|
$1,960,317 | — | 31 Mar 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.23%
|
107,946
|
$1,958,136 | — | 31 Mar 2025 | |
| OSAIC HOLDINGS, INC. |
13F
|
Company |
0.23%
|
107,406
|
$1,948,158 | — | 31 Mar 2025 | |
| ALGERT GLOBAL LLC |
13F
|
Company |
0.2%
|
95,658
|
$1,735,000 | — | 31 Mar 2025 | |
| Baird Financial Group, Inc. |
13F
|
Company |
0.18%
|
85,766
|
$1,555,795 | — | 31 Mar 2025 | |
| RICE HALL JAMES & ASSOCIATES, LLC |
13F
|
Company |
0.17%
|
82,749
|
$1,501,067 | — | 31 Mar 2025 | |
| D. E. Shaw & Co., Inc. |
13F
|
Company |
0.16%
|
74,991
|
$1,360,337 | — | 31 Mar 2025 | |
| Andrew Hill Investment Advisors, Inc. |
13F
|
Company |
0.15%
|
72,891
|
$1,322,261 | — | 31 Mar 2025 | |
| Swiss National Bank |
13F
|
Company |
0.15%
|
72,600
|
$1,316,964 | — | 31 Mar 2025 |
Institutional Holders of AMERICAN SUPERCONDUCTOR CORP /DE/ - Common Stock (AMSC) as of Q2 2025
As of 30 Jun 2025,
AMERICAN SUPERCONDUCTOR CORP /DE/ - Common Stock (AMSC) was held by
228 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
32,674,926 shares.
The largest 10 holders included
BlackRock, Inc., VANGUARD GROUP INC, AWM Investment Company, Inc., BAILLIE GIFFORD & CO, Hood River Capital Management LLC, Atreides Management, LP, GOLDMAN SACHS GROUP INC, STATE STREET CORP, Nuveen, LLC, and GEODE CAPITAL MANAGEMENT, LLC.
This page lists
228
institutional shareholders reporting positions in this security
for the Q2 2025 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q2 2025 vs Q1 2025 Across Filers
Q1 2025 holders
189
Q2 2025 holders
228
Holder diff
39
| Investor | Q1 2025 Shares | Q2 2025 Shares | Share Diff | Share Chg % | Q1 2025 Value $ | Q2 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.