Arrowstreet Capital
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Arrowstreet Capital’s American Superconductor AMSC Stock Holding History

Arrowstreet Capital’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 		$9.58M Sell
230,903
-215,849
-48% -$9.76M ﹤0.01% 1085
2026
Q1 		$15.1M Sell
446,752
-236,450
-35% -$7.46M 0.01% 828
2025
Q4 		$19.7M Sell
683,202
-77,255
-10% -$3.34M 0.01% 742
2025
Q3 		$45.2M Buy
760,457
+524,061
+222% +$26.2M 0.03% 483
2025
Q2 		$8.67M Buy
+236,396
New +$5.81M 0.01% 949
2025
Q1 		– Sell
-296,792
Closed -$7.31M – 1790
2024
Q4 		$7.31M Buy
+296,792
New +$8.19M 0.01% 914
2024
Q3 		– Sell
-57,014
Closed -$1.33M – 1726
2024
Q2 		$1.33M Sell
57,014
-76,889
-57% -$1.27M ﹤0.01% 1164
2024
Q1 		$1.81M Buy
+133,903
New +$1.66M ﹤0.01% 1160
2021
Q1 		– Sell
-224,302
Closed -$5.25M – 2217
2020
Q4 		$5.25M Sell
224,302
-34,248
-13% -$607K 0.01% 1176
2020
Q3 		$3.74M Buy
258,550
+185,049
+252% +$2.07M 0.01% 1289
2020
Q2 		$598K Buy
+73,501
New +$481K ﹤0.01% 1921
2019
Q4 		– Sell
-117,568
Closed -$922K – 1713
2019
Q3 		$922K Sell
117,568
-117,433
-50% -$998K ﹤0.01% 1186
2019
Q2 		$2.18M Buy
235,001
+114,085
+94% +$1.21M ﹤0.01% 883
2019
Q1 		$1.55M Buy
+120,916
New +$1.64M ﹤0.01% 1184

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

Arrowstreet Capital's AMSC Position: Q2 2026 in Review

Arrowstreet Capital reduced its American Superconductor (AMSC) stake by 48% in Q2 2026, selling an estimated $9.76M and leaving 230,903 shares worth $9.58M. The position accounts for ﹤0.01% of the portfolio, ranked #1085.

Arrowstreet Capital first reported a position in AMSC in Q1 2019 and has held it in 14 quarters since. The position peaked at $45.2M in Q3 2025. 279 funds tracked by Wall St. Rank hold AMSC as of Q2 2026.

  • Arrowstreet Capital held 230,903 shares of American Superconductor worth $9.58M as of Q2 2026.
  • Arrowstreet Capital sold 215,849 American Superconductor shares in Q2 2026, an estimated $9.76M.
  • American Superconductor made up ﹤0.01% of Arrowstreet Capital's portfolio in Q2 2026, its #1085 holding.
  • Arrowstreet Capital first reported a position in American Superconductor in Q1 2019 and has held it in 14 quarters since.
  • Arrowstreet Capital's American Superconductor position peaked at $45.2M in Q3 2025.
  • 279 funds tracked by Wall St. Rank held American Superconductor as of Q2 2026.

Based on Arrowstreet Capital's 13F filing for Q2 2026, filed 13 Aug 2026.