Jane Street
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Jane Street’s American Superconductor AMSC Stock Holding History

Jane Street’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
Q1 		$4.62M Buy
136,400
+101,700
+293% +$3.21M ﹤0.01% 3642
2025
Q4 		$999K Sell
34,700
-44,900
-56% -$1.94M ﹤0.01% 6122
2025
Q3 		$4.73M Sell
79,600
-274,600
-78% -$13.7M ﹤0.01% 3501
2025
Q2 		$13M Buy
354,200
+320,200
+942% +$7.87M ﹤0.01% 1862
2025
Q1 		$617K Sell
34,000
-89,100
-72% -$2.22M ﹤0.01% 6476
2024
Q4 		$3.03M Buy
123,100
+27,100
+28% +$747K ﹤0.01% 3422
2024
Q3 		$2.27M Sell
96,000
-3,300
-3% -$76.1K ﹤0.01% 4214
2024
Q2 		$2.32M Buy
99,300
+4,000
+4% +$66.1K ﹤0.01% 4230
2024
Q1 		$1.29M Buy
+95,300
New +$1.18M ﹤0.01% 4940
2023
Q4 		– Sell
-32,500
Closed -$245K – 9140
2023
Q3 		$245K Buy
+32,500
New +$270K ﹤0.01% 7342
2021
Q3 		– Sell
-138,900
Closed -$2.42M – 9864
2021
Q2 		$2.42M Sell
138,900
-7,900
-5% -$126K ﹤0.01% 3967
2021
Q1 		$2.78M Buy
146,800
+34,700
+31% +$859K ﹤0.01% 3401
2020
Q4 		$2.63M Buy
+112,100
New +$1.99M ﹤0.01% 3036

Other funds holding AMSC

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Baillie Gifford & Co
Baillie Gifford & Co Edinburgh, United Kingdom $97.9B AUM 20.73% 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
Barrow, Hanley, Mewhinney & Strauss
Barrow, Hanley, Mewhinney & Strauss Dallas, Texas $30.5B AUM 29.95% 1-Year Est. Return
N
Nuveen Charlotte, North Carolina $369B AUM 31.66% 1-Year Est. Return
OAM
Oberweis Asset Management Lisle, Illinois $3.39B AUM 105.5% 1-Year Est. Return
AIC
AWM Investment Company New York $903M AUM 163.47% 1-Year Est. Return

Jane Street's AMSC Position: Q1 2026 in Review

Jane Street sold out of American Superconductor (AMSC) in Q1 2026, closing a stake of 242,767 shares — an estimated $7.66M sold.

Jane Street first reported a position in AMSC in Q2 2013 and held it in 18 quarters. The position peaked at $8.08M in Q3 2025. 244 funds tracked by Wall St. Rank hold AMSC as of Q1 2026.

  • Jane Street reported no remaining American Superconductor position as of Q1 2026 after selling out during the quarter.
  • Jane Street sold 242,767 American Superconductor shares in Q1 2026, an estimated $7.66M.
  • Jane Street first reported a position in American Superconductor in Q2 2013 and held it in 18 quarters.
  • Jane Street's American Superconductor position peaked at $8.08M in Q3 2025.
  • 244 funds tracked by Wall St. Rank held American Superconductor as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.