AMERICAN SUPERCONDUCTOR CORP /DE/ - Common Stock (AMSC)
CUSIP: 030111207
Q1 2015 13F Holders as of 31 Mar 2015
- Type / Class
- Equity / Common Stock
- Shares outstanding
- 47,694,720
- Total 13F shares
- 866,078
- Share change
- +866,078
- Total reported value
- $5,573,911
- Put/Call ratio
- 3350%
- Price per share
- $6.43
- Number of holders
- 35
- Value change
- +$5,573,911
- Number of buys
- 35
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?
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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.
- Newer quarter: Q2 2015
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 |
|---|---|---|---|---|---|---|---|---|
| VANGUARD GROUP INC |
13F
|
Company |
—
class O/S missing
|
2,126,621
|
$1,575,000 | — | 31 Dec 2014 | |
| Hudson Bay Capital Management LP |
13F
|
Company |
—
class O/S missing
|
1,936,511
|
$1,435,000 | — | 31 Dec 2014 | |
| BlackRock Institutional Trust Company, N.A. |
13F
|
Company |
—
class O/S missing
|
1,643,655
|
$1,218,000 | — | 31 Dec 2014 | |
| JACOBS LEVY EQUITY MANAGEMENT, INC |
13F
|
Company |
—
class O/S missing
|
672,047
|
$498,000 | — | 31 Dec 2014 | |
| PRESCOTT GROUP CAPITAL MANAGEMENT, L.L.C. |
13F
|
Company |
—
class O/S missing
|
650,798
|
$482,000 | — | 31 Dec 2014 | |
| IRONWOOD INVESTMENT MANAGEMENT LLC |
13F
|
Company |
—
class O/S missing
|
586,460
|
$434,000 | — | 31 Dec 2014 | |
| CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM |
13F
|
Company |
—
class O/S missing
|
487,700
|
$323,000 | — | 31 Dec 2014 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
—
class O/S missing
|
382,044
|
$283,000 | — | 31 Dec 2014 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
—
class O/S missing
|
343,585
|
$254,000 | — | 31 Dec 2014 | |
| RUSSELL FRANK CO/ |
13F
|
Company |
—
class O/S missing
|
321,570
|
$241,000 | — | 31 Dec 2014 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
—
class O/S missing
|
315,189
|
$233,000 | — | 31 Dec 2014 | |
| D. E. Shaw & Co., Inc. |
13F
|
Company |
—
class O/S missing
|
301,547
|
$223,000 | — | 31 Dec 2014 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
—
class O/S missing
|
268,882
|
$199,000 | — | 31 Dec 2014 | |
| Anson Funds Management LP |
13F
|
Company |
—
class O/S missing
|
261,759
|
$194,000 | — | 31 Dec 2014 | |
| BROWN ADVISORY INC |
13F
|
Company |
—
class O/S missing
|
234,385
|
$173,000 | — | 31 Dec 2014 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
—
class O/S missing
|
217,046
|
$161,000 | — | 31 Dec 2014 | |
| FIRST MANHATTAN CO. LLC. |
13F
|
Company |
—
class O/S missing
|
156,200
|
$115,000 | — | 31 Dec 2014 | |
| NORTHERN TRUST CORP |
13F
|
Company |
—
class O/S missing
|
152,725
|
$113,000 | — | 31 Dec 2014 | |
| BlackRock Fund Advisors |
13F
|
Company |
—
class O/S missing
|
136,698
|
$101,000 | — | 31 Dec 2014 | |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP |
13F
|
Company |
—
class O/S missing
|
131,877
|
$98,000 | — | 31 Dec 2014 | |
| PANAGORA ASSET MANAGEMENT INC |
13F
|
Company |
—
class O/S missing
|
101,900
|
$75,000 | — | 31 Dec 2014 | |
| KBC Group NV |
13F
|
Company |
—
class O/S missing
|
100,637
|
$75,000 | — | 31 Dec 2014 | |
| UBS Group AG |
13F
|
Company |
—
class O/S missing
|
91,490
|
$68,000 | — | 31 Dec 2014 | |
| DEUTSCHE BANK AG\ |
13F
|
Company |
—
class O/S missing
|
86,995
|
$64,000 | — | 31 Dec 2014 | |
| Spark Investment Management LLC |
13F
|
Company |
—
class O/S missing
|
84,200
|
$62,000 | — | 31 Dec 2014 | |
| FIRST TRUST ADVISORS LP |
13F
|
Company |
—
class O/S missing
|
72,764
|
$54,000 | — | 31 Dec 2014 | |
| INVERNESS COUNSEL LLC /NY/ |
13F
|
Company |
—
class O/S missing
|
71,000
|
$53,000 | — | 31 Dec 2014 | |
| Virtu KCG Holdings LLC |
13F
|
Company |
—
class O/S missing
|
67,951
|
$50,000 | — | 31 Dec 2014 | |
| Bank of New York Mellon Corp |
13F
|
Company |
—
class O/S missing
|
61,050
|
$46,000 | — | 31 Dec 2014 | |
| OXFORD ASSET MANAGEMENT LLP |
13F
|
Company |
—
class O/S missing
|
60,448
|
$45,000 | — | 31 Dec 2014 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
—
class O/S missing
|
50,047
|
$37,000 | — | 31 Dec 2014 | |
| MORGAN STANLEY |
13F
|
Company |
—
class O/S missing
|
42,352
|
$32,000 | — | 31 Dec 2014 | |
| Airain ltd |
13F
|
Company |
—
class O/S missing
|
34,027
|
$25,000 | — | 31 Dec 2014 | |
| STATE STREET CORP |
13F
|
Company |
—
class O/S missing
|
32,631
|
$24,000 | — | 31 Dec 2014 | |
| COWEN INC. |
13F
|
Company |
—
class O/S missing
|
30,000
|
$22,000 | — | 31 Dec 2014 | |
| CREDIT SUISSE AG/ |
13F
|
Company |
—
class O/S missing
|
25,411
|
$19,000 | — | 31 Dec 2014 | |
| PNC FINANCIAL SERVICES GROUP, INC. |
13F
|
Company |
—
class O/S missing
|
21,500
|
$15,000 | — | 31 Dec 2014 | |
| FLOOD GAMBLE ASSOCIATES INC |
13F
|
Company |
—
class O/S missing
|
20,000
|
$15,000 | — | 31 Dec 2014 | |
| GROUP ONE TRADING LLC |
13F
|
Company |
—
class O/S missing
|
18,655
|
$14,000 | — | 31 Dec 2014 | |
| SIMPLEX TRADING, LLC |
13F
|
Company |
—
class O/S missing
|
18,085
|
$13,000 | — | 31 Dec 2014 | |
| KING LUTHER CAPITAL MANAGEMENT CORP |
13F
|
Company |
—
class O/S missing
|
14,000
|
$10,000 | — | 31 Dec 2014 | |
| LPL Financial LLC |
13F
|
Company |
—
class O/S missing
|
12,435
|
$9,000 | — | 31 Dec 2014 | |
| BlackRock Investment Management, LLC |
13F
|
Company |
—
class O/S missing
|
11,363
|
$8,000 | — | 31 Dec 2014 | |
| TFS CAPITAL LLC |
13F
|
Company |
—
class O/S missing
|
10,749
|
$8,000 | — | 31 Dec 2014 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
—
class O/S missing
|
10,723
|
$8,000 | — | 31 Dec 2014 | |
| BONNESS ENTERPRISES INC |
13F
|
Company |
—
class O/S missing
|
10,500
|
$8,000 | — | 31 Dec 2014 | |
| Lombard Odier & Cie (Bahamas) Ltd |
13F
|
Company |
—
class O/S missing
|
10,360
|
$8,000 | — | 31 Dec 2014 | |
| FineMark National Bank & Trust |
13F
|
Company |
—
class O/S missing
|
10,000
|
$7,000 | — | 31 Dec 2014 | |
| CITIGROUP INC |
13F
|
Company |
—
class O/S missing
|
9,152
|
$7,000 | — | 31 Dec 2014 | |
| US BANCORP \DE\ |
13F
|
Company |
—
class O/S missing
|
9,083
|
$7,000 | — | 31 Dec 2014 |
Institutional Holders of AMERICAN SUPERCONDUCTOR CORP /DE/ - Common Stock (AMSC) as of Q1 2015
As of 31 Mar 2015,
AMERICAN SUPERCONDUCTOR CORP /DE/ - Common Stock (AMSC) was held by
35 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
866,078 shares.
The largest 10 holders included
VANGUARD GROUP INC, BlackRock Institutional Trust Company, N.A., RENAISSANCE TECHNOLOGIES LLC, JACOBS LEVY EQUITY MANAGEMENT, INC, IRONWOOD INVESTMENT MANAGEMENT LLC, Russell Frank Co/, DIMENSIONAL FUND ADVISORS LP, SCOPIA CAPITAL MANAGEMENT LP, CONDOR CAPITAL MANAGEMENT, and BlackRock Fund Advisors.
This page lists
35
institutional shareholders reporting positions in this security
for the Q1 2015 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q1 2015 vs Q4 2025 Across Filers
Q4 2025 holders
237
Q1 2015 holders
35
Holder diff
-202
| Investor | Q4 2025 Shares | Q1 2015 Shares | Share Diff | Share Chg % | Q4 2025 Value $ | Q1 2015 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.