Security key
030111207
AMERICAN SUPERCONDUCTOR CORP /DE/ - Common Stock (AMSC)
CUSIP: 030111207
Q3 2020 13F Holders as of 30 Sep 2020
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 13,877,546
- Total 13F value
- $201,594,232
- Share change
- +2,252,382
- Put/Call ratio
- 23%
- SEC-reported price per share
- $14.48
- Number of holders
- 83
- Value change
- +$35,621,311
- Number of buys
- 43
- 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 2020
Institutions
83
Top holders
10
AMSC full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q4 2020
Previous quarter: Q2 2020
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
BlackRock Finance, Inc.
Disclosed value leader
BlackRock Finance, Inc.
Comparable rows
15/15
Latest evidence
30 Jun 2020
13F
Lead comparable stake: 3.1%
Showing 1-6 of 15 holder rows.
Quick read
BlackRock Finance, Inc. leads the comparable SEC ownership view at 3.1%.
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 BlackRock Finance, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock Finance, Inc.
3.1%
RENAISSANCE TECHNOLOGIES LLC
2.7%
AWM Investment Company, Inc.
2.6%
VANGUARD GROUP INC
2.2%
ROYCE & ASSOCIATES LP
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 |
|---|---|---|---|---|---|
| BlackRock Finance, Inc. |
13F
Company
|
3.1%
|
$12,112,000
1,489,711 shares
|
— | 30 Jun 2020 |
| RENAISSANCE TECHNOLOGIES LLC |
13F
Company
|
2.7%
|
$10,425,000
1,282,317 shares
|
— | 30 Jun 2020 |
| AWM Investment Company, Inc. |
13F
Company
|
2.6%
|
$9,925,000
1,220,814 shares
|
— | 30 Jun 2020 |
| VANGUARD GROUP INC |
13F
Company
|
2.2%
|
$8,612,000
1,059,244 shares
|
— | 30 Jun 2020 |
| ROYCE & ASSOCIATES LP |
13F
Company
|
1.4%
|
$5,499,000
676,374 shares
|
— | 30 Jun 2020 |
| STATE STREET CORP |
13F
Company
|
1.1%
|
$4,335,000
533,223 shares
|
— | 30 Jun 2020 |
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 2020
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
83
Shares
13,877,546
Rows available
83
| 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 2020 vs Q2 2020 Across Filers
Q2 2020 holders
71
Q3 2020 holders
83
Holder diff
12
| Investor | Q2 2020 Shares | Q3 2020 Shares | Share Diff | Share Chg % | Q2 2020 value | Q3 2020 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend