American Superconductor
AMSC
240 hedge funds and large institutions have $953M invested in American Superconductor in 2025 Q4 according to their latest regulatory filings, with 41 funds opening new positions, 106 increasing their positions, 64 reducing their positions, and 70 closing their positions.
150% more call options, than puts
Call options by funds: $43.3M | Put options by funds: $17.3M
66% more repeat investments, than reductions
Existing positions increased: 106 | Existing positions reduced: 64
0.78% more ownership
Funds ownership: 72.42% → 73.2% (+0.78%)
12% less funds holding
Funds holding: 273 → 240 (-33)
41% less first-time investments, than exits
New positions opened: 41 | Existing positions closed: 70
51% less capital invested
Capital invested by funds: $1.94B → $953M (-$988M)
100% less funds holding in top 10
Funds holding in top 10: 7 → 0 (-7)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Vanguard Group
Malvern,
Pennsylvania
|
+$24.9M |
| 2 |
UBS Group
Zurich,
Switzerland
|
+$23.8M |
| 3 |
Morgan Stanley
New York
|
+$16M |
| 4 |
Qube Research & Technologies (QRT)
London,
United Kingdom
|
+$14.8M |
| 5 |
Citadel Advisors
Miami,
Florida
|
+$14M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Fuller & Thaler Asset Management
San Mateo,
California
|
-$48.1M |
| 2 |
DCM
Driehaus Capital Management
Chicago,
Illinois
|
-$31.1M |
| 3 |
Macquarie Group
Sydney, NSW 2000,
Australia
|
-$27.6M |
| 4 |
Wellington Management Group
Boston,
Massachusetts
|
-$23.7M |
| 5 |
Goldman Sachs
New York
|
-$16.9M |
AMSC Hedge Fund Activity: Q4 2025 in Review
240 of the 8,266 institutional investors tracked by Wall St. Rank reported a position in American Superconductor (AMSC) for Q4 2025, worth a combined $953M — down 51% from $1.94B a quarter earlier.
Sellers outnumbered buyers: 70 funds closed out of AMSC and 41 opened new positions — a net loss of 29 holders — while 64 trimmed existing stakes and 106 added.
The largest buyer was Vanguard Group, adding an estimated $24.9M. The largest seller was Fuller & Thaler Asset Management, exiting entirely with an estimated $48.1M sold.
- 240 institutional investors held American Superconductor (AMSC) as of Q4 2025, down from 273 in Q3 2025.
- Funds reported $953M of American Superconductor stock for Q4 2025, down 51% quarter-over-quarter.
- 41 funds opened new American Superconductor positions in Q4 2025 and 70 closed out, a net change of -29 holders.
- The largest American Superconductor buyer in Q4 2025 was Vanguard Group, an estimated $24.9M added.
- The largest American Superconductor seller in Q4 2025 was Fuller & Thaler Asset Management, an estimated $48.1M sold.
Based on aggregated 13F filings for Q4 2025.