AMSC

American Superconductor Corp

Latest period2026 - Q1Total superinvestors244

Top 10 Superinvestors by Shares Owned

This chart shows the top 10 superinvestors based on the number of shares they owned in 2025-Q4 and 2026-Q1. According to the most recent SEC 13F filing, 244 superinvestors own shares of American Superconductor Corp (AMSC), although recent data may remain incomplete due to pending filings.

Quarter-over-Quarter Change (%)

This chart highlights the quarter-over-quarter change (%) in the number of superinvestors holding American Superconductor Corp (AMSC), the total shares they held, and the total reported dollar value. It gives a clear view of whether there is ongoing momentum. The dotted lines at the top and bottom adjust longer bars to keep smaller data points visible for better comparison.

Superinvestors' Activity (%) Over the Last 4 Quarters

This chart shows superinvestors' activity with American Superconductor Corp (AMSC) over the last four quarters, highlighting the percentage of investors who added, increased, decreased, held, or exited their positions, revealing shifts in sentiment over time.

Superinvestors' Past Actions

This chart displays superinvestors' past actions with American Superconductor Corp (AMSC) over the last 10 years (40 quarters), helping to visualize the collective momentum and investment trends over time.

Superinvestors ownership

SuperinvestorPortfolio %Reported Value
Spencer Fleming@Blackrock, Inc.
Recent Activity
Increased 6.2%
0.01%
$134.813M
3.983M shares@ 33.86 avg price
Christine M. Buchanan@Vanguard Capital Management Llc
Recent Activity
New Position
0.01%
$69.036M
2.039M shares@ 33.86 avg price
Christine M. Buchanan@Vanguard Portfolio Management Llc
Recent Activity
New Position
0.01%
$57.94M
1.712M shares@ 33.85 avg price
Grant Meikle@Baillie Gifford & Co
Recent Activity
Decreased -3.94%
0.06%
$48.995M
1.447M shares@ 33.86 avg price
ELIZABETH SCHAEFER@State Street Corp
Recent Activity
Increased 5.79%
0.01%
$42.687M
1.261M shares@ 33.85 avg price
Laura Doherty@Geode Capital Management, Llc
Recent Activity
Increased 7.2%
0.01%
$39.584M
1.169M shares@ 33.86 avg price
Hannah Ackels@Barrow Hanley Mewhinney & Strauss Llc
Recent Activity
New Position
0.13%
$38.582M
1.14M shares@ 33.85 avg price
Joseph Castro@Nuveen, Llc
Recent Activity
Increased 6.25%
0.01%
$34.559M
1.021M shares@ 33.86 avg price
Thomas P. Joyce@Oberweis Asset Management Inc
Recent Activity
Increased 1.68%
0.85%
$28.769M
849,900 shares@ 33.85 avg price
David Greenhouse@Awm Investment Company, Inc.
Recent Activity
Increased 6.29%
3.01%
$27.134M
801,604 shares@ 33.85 avg price

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