Security key
030111207
AMERICAN SUPERCONDUCTOR CORP /DE/ - Common Stock (AMSC)
CUSIP: 030111207
Q3 2022 13F Holders as of 30 Sep 2022
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 13,931,654
- Total 13F value
- $61,023,588
- Share change
- +682,858
- Put/Call ratio
- 43%
- SEC-reported price per share
- $4.38
- Number of holders
- 74
- Value change
- +$2,317,476
- Number of buys
- 35
- Number of sells
- 36
- Shares outstanding
- 48,487,323
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2022
Institutions
74
Top holders
10
AMSC full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q3 2026
AMERICAN SUPERCONDUCTOR CORP /DE/ SEC filings
AMERICAN SUPERCONDUCTOR CORP /DE/ company facts
Broader feeds
Reporting periods
Holder history for CUSIP 030111207
Recent filing periods:
Ownership snapshot
Top reported holders of AMSC - AMERICAN SUPERCONDUCTOR CORP /DE/ - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
AWM Investment Company, Inc.
Disclosed value leader
AWM Investment Company, Inc.
Comparable rows
0/15
Latest evidence
30 Jun 2022
13F
Highest disclosed value: $7,830,000
15 rows are not safely comparable across share classes.
Showing 1-6 of 15 holder rows.
Quick read
AWM Investment Company, Inc. has the largest disclosed position value at $7.83M.
0 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens AWM Investment Company, Inc.'s linked filing trail.
Disclosed position value
Top 5
AWM Investment Company, Inc.
$7.83M
BAILLIE GIFFORD & CO
$7.72M
VANGUARD GROUP INC
$5.81M
Invesco Ltd.
$5.67M
ROYCE & ASSOCIATES LP
$4.28M
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| AWM Investment Company, Inc. |
13F
Company
|
—
denominator unverified
|
$7,830,000
1,511,497 shares
|
— | 30 Jun 2022 |
| BAILLIE GIFFORD & CO |
13F
Company
|
—
denominator unverified
|
$7,725,000
1,491,370 shares
|
— | 30 Jun 2022 |
| VANGUARD GROUP INC |
13F
Company
|
—
denominator unverified
|
$5,807,000
1,121,070 shares
|
— | 30 Jun 2022 |
| Invesco Ltd. |
13F
Company
|
—
denominator unverified
|
$5,674,000
1,095,321 shares
|
— | 30 Jun 2022 |
| ROYCE & ASSOCIATES LP |
13F
Company
|
—
denominator unverified
|
$4,282,000
826,600 shares
|
— | 30 Jun 2022 |
| D. E. Shaw & Co., Inc. |
13F
Company
|
—
denominator unverified
|
$3,372,000
650,858 shares
|
— | 30 Jun 2022 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q3 2022
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
74
Shares
13,931,654
Rows available
74
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q3 2022 vs Q2 2022 Across Filers
Q2 2022 holders
81
Q3 2022 holders
74
Holder diff
-7
| Investor | Q2 2022 Shares | Q3 2022 Shares | Share Diff | Share Chg % | Q2 2022 value | Q3 2022 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend