Platform Features
Platform Features
Features
Investment Products
Private Wealth Management
Trading Tools
Market Data Services
Analysis Tools
News Services
For Developers
Account Types
For Individuals
For Institutions
Café
More
Log in / Sign up
© 2026 Longbridge|
Terms of Service
Privacy Policy
Disclaimer
American Superconductor
AMSC
31.160
0.45% ( +0.140 )
Closed: Aug 19, 16:00:01 (EDT)
Start trading
Overview
Overview
Options
Options
News
News
Posts
Posts
Financials
Financials
Forecast
Forecast
Valuation
Valuation
Shareholders
Shareholders
Profile
Profile
All Shareholders
Institutional Holders
Insiders
All Shareholders
Shareholder Type
Institutions
71.14%
Public and others
25.41%
Individuals & Insiders
3.45%
Major Shareholders
Latest
Major Shareholders Latest
Shareholder
% Held
Shares Held
Change %
Shares Changed
Report Date
BlackRock, Inc.
8.45%
4.10M
0.09%
+112.72K
06/30/2026
Vanguard Capital Management, LLC
4.90%
2.37M
0.07%
+6.64K
06/30/2026
Barrow, Hanley, Mewhinney & Strauss, LLC
3.52%
1.70M
1.12%
+564.21K
06/30/2026
UBS Asset Management AG
3.14%
1.52M
1.69%
+832.15K
06/30/2026
Vanguard Portfolio Management, LLC
2.93%
1.42M
0.66%
-292.81K
06/30/2026
Emerald Advisers, LLC
2.85%
1.38M
0.34%
+186.63K
06/30/2026
State Street Investment Management
2.80%
1.36M
0.16%
+97.15K
06/30/2026
Geode Capital Management, LLC
2.57%
1.24M
0.11%
+74.05K
06/30/2026
First Trust Advisors LP
2.41%
1.17M
0.78%
+390.16K
06/30/2026
Daniel McGahn
Chairman, President & CEO
2.36%
1.15M
0.15%
-50.75K
06/11/2026
Baillie Gifford & Co.
1.93%
933.31K
1.11%
-514.11K
06/30/2026
Oberweis Asset Management, Inc.
1.75%
849.90K
<0.01%
+14.00K
03/31/2026
AWM Investment Company Inc
1.65%
801.60K
0.07%
+47.38K
03/31/2026
Dimensional Fund Advisors LP
1.36%
658.30K
0.22%
+118.04K
03/31/2026
Teachers Insurance and Annuity Association-College Retirement Equities Fund
1.28%
620.31K
0.82%
-381.81K
06/30/2026
Telemark Asset Management, LLC
1.24%
600.00K
0.02%
+0
06/30/2026
D. E. Shaw & Co., L.P.
1.17%
567.57K
0.24%
+124.43K
03/31/2026
Royce & Associates, LP
1.12%
542.78K
0.31%
+155.71K
03/31/2026
Legal & General Investment Management Limited
1.09%
530.13K
0.51%
+252.11K
03/31/2026
Goldman Sachs Asset Management, L.P.
1.04%
505.30K
0.22%
+113.84K
03/31/2026