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Heights Capital Management’s American Superconductor AMSC Stock Holding History

Heights Capital Management’s Portfolio AMSC Stock Details AMSC Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q3 		– Sell
-340,102
Closed -$12.5M – 188
2025
Q2 		$12.5M Buy
+340,102
New +$8.36M 3.33% 7

Other funds holding AMSC

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Baillie Gifford & Co
Baillie Gifford & Co Edinburgh, United Kingdom $97.9B AUM 20.73% 1-Year Est. Return
DCM
Driehaus Capital Management Chicago, Illinois $13.6B AUM 173.98% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
N
Nuveen Charlotte, North Carolina $369B AUM 31.66% 1-Year Est. Return
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $29.7B AUM 43.33% 1-Year Est. Return
AM
Atreides Management Boston, Massachusetts $5B AUM 78.34% 1-Year Est. Return

Heights Capital Management's AMSC Position: Q3 2025 in Review

Heights Capital Management sold out of American Superconductor (AMSC) in Q3 2025, closing a stake of 340,102 shares — an estimated $12.5M sold.

Heights Capital Management first reported a position in AMSC in Q2 2025 and held it in 1 quarter. The position peaked at $12.5M in Q2 2025. 273 funds tracked by Wall St. Rank hold AMSC as of Q3 2025.

  • Heights Capital Management reported no remaining American Superconductor position as of Q3 2025 after selling out during the quarter.
  • Heights Capital Management sold 340,102 American Superconductor shares in Q3 2025, an estimated $12.5M.
  • Heights Capital Management first reported a position in American Superconductor in Q2 2025 and held it in 1 quarter.
  • Heights Capital Management's American Superconductor position peaked at $12.5M in Q2 2025.
  • 273 funds tracked by Wall St. Rank held American Superconductor as of Q3 2025.

Based on Heights Capital Management's 13F filing for Q3 2025, filed 14 Nov 2025.