American Superconductor
AMSC
31.74
-0.11
-0.35%
American Superconductor
US · AMSC
#3004 by market cap
Listed 1970
31.74
-0.11
-0.35%
Live - 5344 symbols - heartbeat 75s ago
· 2026-10-08 07:58
Pre-market
31.49
-0.79%
After-hours
31.74
0.00%
Overnight
31.50
-0.76%
- Market cap
- 1.54B
- P/E (TTM)i
- 10.31
- P/Bi
- 2.69
- EPSi
- 3.05
- Div yieldi
- 0.00%
- 52W posi
- 15%
Reader sentiment
Are you bullish or bearish on AMSC?
Anonymous reader poll. Unscientific, not investment advice.
✦ Quant Ownership Signal how this is computed
Distributing
- Total institutional ownership fell 1.4 percentage points.
Institutional ownership
- Held by institutions
- 74.56% -1.41pp
- Institutions
- 328
- As of
- 2026/Q3 vs. prior period
Ownership vs. money flow
AlignedInstitutions trimmed shares last reporting period, and the stock has seen net outflows in main-fund flow over the last 20 trading sessions - the two line up.
Institutional ownership changes are reported quarterly with a lag; fund-flow data is daily. Treat this as a directional cross-check, not a precise timing signal.
Holder types
Mutual Fund60.76%
Hedge Fund6.68%
Individual/Insider3.45%
Public Company2.89%
Private Company2.79%
Insurance Company0.79%
Government Pension Fund0.43%
Family Office/Trust0.22%
Other21.99%
Top holders as of 2026-06-30
BlackRock
8.45% · 4.10M sh
Vanguard Capital Management, LLC
4.90% · 2.37M sh
Barrow, Hanley, Mewhinney & Strauss, LLC
3.52% · 1.70M sh
UBS Asset Management
3.14% · 1.52M sh
Vanguard Portfolio Management, LLC
2.93% · 1.42M sh
Emerald Advisers, LLC
2.85% · 1.38M sh
State Street Global Advisors
2.80% · 1.36M sh
Geode Capital Management, LLC
2.57% · 1.24M sh
First Trust Advisors L.P.
2.41% · 1.17M sh
Daniel McGahn
2.36% · 1.15M sh
Bar length is relative to the largest holder shown here, not to 100% of the company.
Insiders
50 filings tracked · 24 buys · 26 sells
| Name | Role | Stake |
|---|---|---|
| Daniel McGahn | Chairperson & CEO | 2.36% |
| John Kosiba | CFO, Senior VP & Treasurer | 0.69% |
| David Oliver | Independent Director | 0.13% |
| Arthur House | Lead Independent Director | 0.11% |
| Barbara Littlefield | Independent Director | 0.08% |
| Margaret Klein | Independent Director | 0.04% |
| Laura Dambier | Independent Director | 0.03% |
| Terence Donnelly | -- | 0.01% |
Insider transactions most recent Form 4 filings
| Date | Name | Role | Type | Shares | Price |
|---|---|---|---|---|---|
| 2026-09-17 | Barbara Littlefield | Independent Director | Other Acquisition | +1,607 | -- |
| 2026-06-10 | Daniel McGahn | Chairperson & CEO | Automatic Disposition | -16,117 | $37.28–37.85 |
| 2026-06-10 | John Kosiba | CFO, Senior VP & Treasurer | Automatic Disposition | -6,769 | $37.33–37.85 |
| 2026-06-10 | Laura Dambier | Independent Director | Open Market Disposition | -4,000 | $37.63 |
| 2026-06-09 | Laura Dambier | Independent Director | Intent to Sell (Form 144) | -4,000 | $40.21 |
| 2026-06-07 | Daniel McGahn | Chairperson & CEO | Automatic Disposition | -9,670 | $41.39–42.19 |
| 2026-06-07 | John Kosiba | CFO, Senior VP & Treasurer | Automatic Disposition | -4,835 | $41.50–42.35 |
| 2026-06-02 | Daniel McGahn | Chairperson & CEO | Automatic Disposition | -85,418 | $48.31–52.14 |
| 2026-06-02 | John Kosiba | CFO, Senior VP & Treasurer | Automatic Disposition | -36,909 | $48.31–52.19 |
| 2026-05-31 | Daniel McGahn | Chairperson & CEO | Other Acquisition | +60,000 | -- |
| 2026-05-31 | John Kosiba | CFO, Senior VP & Treasurer | Other Acquisition | +30,000 | -- |
| 2026-04-02 | David Oliver | Independent Director | Other Acquisition | +3,116 | -- |
| 2026-04-02 | Arthur House | Lead Independent Director | Other Acquisition | +3,116 | -- |
| 2026-04-02 | Barbara Littlefield | Independent Director | Other Acquisition | +3,116 | -- |
| 2026-04-02 | Margaret Klein | Independent Director | Other Acquisition | +3,116 | -- |
| 2026-04-02 | Laura Dambier | Independent Director | Other Acquisition | +3,116 | -- |
| 2026-04-02 | Terence Donnelly | -- | Other Acquisition | +2,665 | -- |
| 2026-02-23 | David Oliver | Independent Director | Open Market Disposition | -200 | $34.10 |
| 2025-08-07 | Arthur House | Lead Independent Director | Derivative Exercise and Sale | -9,703 | $6.80–50.92 |
| 2025-08-07 | Arthur House | Lead Independent Director | Intent to Sell (Form 144) | -9,703 | $50.86 |
Form 4 filings, most recent per company. "Other Derivative Acquisition" rows are mostly RSU/option vesting, not open-market buying - the Type column says which.
Quote time 2026-10-08 07:58:25 · For reference only, not investment advice and not tailored to your situation.