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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
Q2 		$15.5M Buy
373,500
+237,100
+174% +$10.7M ﹤0.01% 2385
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 $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 $3.38T AUM 44.17% 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

Jane Street's AMSC Position: Q2 2026 in Review

Jane Street opened a new position in American Superconductor (AMSC) in Q2 2026: 170,319 shares worth $7.07M. The stake represents ﹤0.01% of the portfolio and ranks #3247 among its holdings. This is a return to the name: Jane Street previously reported a position in AMSC as recently as Q4 2025.

Jane Street first reported a position in AMSC in Q2 2013 and has held it in 19 quarters since. The position peaked at $8.08M in Q3 2025. 278 funds tracked by Wall St. Rank hold AMSC as of Q2 2026.

  • Jane Street held 170,319 shares of American Superconductor worth $7.07M as of Q2 2026.
  • American Superconductor was a new Jane Street position in Q2 2026.
  • American Superconductor made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #3247 holding.
  • Jane Street first reported a position in American Superconductor in Q2 2013 and has held it in 19 quarters since.
  • Jane Street's American Superconductor position peaked at $8.08M in Q3 2025.
  • 278 funds tracked by Wall St. Rank held American Superconductor as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.