Security key
030111207
AMERICAN SUPERCONDUCTOR CORP /DE/ - Common Stock (AMSC)
CUSIP: 030111207
Q3 2023 13F Holders as of 30 Sep 2023
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 13,211,392
- Total 13F value
- $99,745,426
- Share change
- +113,927
- Put/Call ratio
- 36%
- SEC-reported price per share
- $7.55
- Number of holders
- 71
- Value change
- +$1,953,457
- Number of buys
- 39
- Number of sells
- 34
- Shares outstanding
- 47,694,720
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 2023
Institutions
71
Top holders
10
AMSC full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q4 2023
Previous quarter: Q2 2023
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
15/15
Latest evidence
30 Jun 2023
13F
Lead comparable stake: 4.7%
Showing 1-6 of 15 holder rows.
Quick read
AWM Investment Company, Inc. leads the comparable SEC ownership view at 4.7%.
15 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.
Comparable ownership
Top 5
AWM Investment Company, Inc.
4.7%
ROYCE & ASSOCIATES LP
3.9%
BAILLIE GIFFORD & CO
3.1%
VANGUARD GROUP INC
2.6%
ArrowMark Colorado Holdings LLC
1.4%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
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
|
4.7%
|
$13,949,164
2,228,301 shares
|
— | 30 Jun 2023 |
| ROYCE & ASSOCIATES LP |
13F
Company
|
3.9%
|
$11,671,952
1,864,529 shares
|
— | 30 Jun 2023 |
| BAILLIE GIFFORD & CO |
13F
Company
|
3.1%
|
$9,335,976
1,491,370 shares
|
— | 30 Jun 2023 |
| VANGUARD GROUP INC |
13F
Company
|
2.6%
|
$7,786,351
1,243,826 shares
|
— | 30 Jun 2023 |
| ArrowMark Colorado Holdings LLC |
13F
Company
|
1.4%
|
$4,190,644
669,432 shares
|
— | 30 Jun 2023 |
| DIMENSIONAL FUND ADVISORS LP |
13F
Company
|
1.2%
|
$3,721,471
594,621 shares
|
— | 30 Jun 2023 |
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 2023
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
71
Shares
13,211,392
Rows available
71
| 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 2023 vs Q2 2023 Across Filers
Q2 2023 holders
75
Q3 2023 holders
71
Holder diff
-4
| Investor | Q2 2023 Shares | Q3 2023 Shares | Share Diff | Share Chg % | Q2 2023 value | Q3 2023 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend