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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 		$7.07M Buy
+170,319
New +$7.7M ﹤0.01% 3247
2026
Q1 		– Sell
-242,767
Closed -$7.66M – 11482
2025
Q4 		$6.99M Buy
242,767
+106,665
+78% +$4.61M ﹤0.01% 2762
2025
Q3 		$8.08M Sell
136,102
-28,003
-17% -$1.4M ﹤0.01% 2700
2025
Q2 		$6.02M Buy
164,105
+42,566
+35% +$1.05M ﹤0.01% 2761
2025
Q1 		$2.2M Buy
121,539
+92,197
+314% +$2.3M ﹤0.01% 4198
2024
Q4 		$723K Buy
29,342
+10,655
+57% +$294K ﹤0.01% 6001
2024
Q3 		$441K Sell
18,687
-49,383
-73% -$1.14M ﹤0.01% 7411
2024
Q2 		$1.59M Sell
68,070
-288,403
-81% -$4.76M ﹤0.01% 4900
2024
Q1 		$4.82M Buy
356,473
+142,974
+67% +$1.77M ﹤0.01% 2663
2023
Q4 		$2.38M Buy
+213,499
New +$1.81M ﹤0.01% 4021
2023
Q3 		– Sell
-15,719
Closed -$130K – 8566
2023
Q2 		$98.4K Sell
15,719
-38,355
-71% -$187K ﹤0.01% 8007
2023
Q1 		$266K Buy
54,074
+19,032
+54% +$95.6K ﹤0.01% 7393
2022
Q4 		$129K Buy
+35,042
New +$137K ﹤0.01% 7962
2022
Q3 		– Sell
-56,977
Closed -$295K – 9634
2022
Q2 		$295K Buy
+56,977
New +$330K ﹤0.01% 7629
2021
Q3 		– Sell
-24,825
Closed -$344K – 9863
2021
Q2 		$432K Sell
24,825
-58,577
-70% -$937K ﹤0.01% 7513
2021
Q1 		$1.58M Buy
83,402
+61,112
+274% +$1.51M ﹤0.01% 4478
2020
Q4 		$522K Buy
+22,290
New +$395K ﹤0.01% 5673
2019
Q2 		– Sell
-19,256
Closed -$248K – 5090
2019
Q1 		$248K Buy
+19,256
New +$262K ﹤0.01% 4449
2013
Q3 		– Sell
-6,853
Closed -$181K – 2680
2013
Q2 		$181K Buy
+6,853
New +$173K ﹤0.01% 2294

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

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. 279 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.
  • 279 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.