Wellington Management Group
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Wellington Management Group’s American Superconductor AMSC Stock Holding History

Wellington Management Group’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
2026
Q2 		$3.54M Buy
+85,244
New +$3.85M ﹤0.01% 1521
2025
Q4 		– Sell
-399,246
Closed -$23.7M – 1923
2025
Q3 		$23.7M Sell
399,246
-32,343
-7% -$1.62M ﹤0.01% 956
2025
Q2 		$15.8M Buy
431,589
+142,416
+49% +$3.5M ﹤0.01% 1056
2025
Q1 		$5.25M Sell
289,173
-172,057
-37% -$4.29M ﹤0.01% 1361
2024
Q4 		$11.4M Buy
+461,230
New +$12.7M ﹤0.01% 1162

Other funds holding AMSC

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Barrow, Hanley, Mewhinney & Strauss
Barrow, Hanley, Mewhinney & Strauss Dallas, Texas $33B AUM 40.62% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
First Trust Advisors
First Trust Advisors Wheaton, Illinois $170B AUM 46.21% 1-Year Est. Return
OAM
Oberweis Asset Management Lisle, Illinois $4.84B AUM 160.95% 1-Year Est. Return

Wellington Management Group's AMSC Position: Q2 2026 in Review

Wellington Management Group opened a new position in American Superconductor (AMSC) in Q2 2026: 85,244 shares worth $3.54M. The stake represents ﹤0.01% of the portfolio and ranks #1521 among its holdings. This is a return to the name: Wellington Management Group previously reported a position in AMSC as recently as Q3 2025.

Wellington Management Group first reported a position in AMSC in Q4 2024 and has held it in 5 quarters since. The position peaked at $23.7M in Q3 2025. 279 funds tracked by Wall St. Rank hold AMSC as of Q2 2026.

  • Wellington Management Group held 85,244 shares of American Superconductor worth $3.54M as of Q2 2026.
  • American Superconductor was a new Wellington Management Group position in Q2 2026.
  • American Superconductor made up ﹤0.01% of Wellington Management Group's portfolio in Q2 2026, its #1521 holding.
  • Wellington Management Group first reported a position in American Superconductor in Q4 2024 and has held it in 5 quarters since.
  • Wellington Management Group's American Superconductor position peaked at $23.7M in Q3 2025.
  • 279 funds tracked by Wall St. Rank held American Superconductor as of Q2 2026.

Based on Wellington Management Group's 13F filing for Q2 2026, filed 14 Aug 2026.