State of Wisconsin Investment Board’s American Superconductor AMSC Stock Holding History

State of Wisconsin Investment Board’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	$245K	Buy	+5,908	New	+$267K	﹤0.01%	2346
2026 Q1	–	Sell	-11,227	Closed	-$323K	–	2498
2025 Q4	$323K	Buy	11,227 +4,823	+75%	+$209K	﹤0.01%	2140
2025 Q3	$380K	Buy	+6,404	New	+$320K	﹤0.01%	2010
2023 Q2	–	Sell	-20,500	Closed	-$101K	–	2351
2023 Q1	$101K	Sell	20,500 -29,500	-59%	-$148K	﹤0.01%	2390
2022 Q4	$184K	Sell	50,000 -26,600	-35%	-$104K	﹤0.01%	2264
2022 Q3	$336K	Sell	76,600 -47,200	-38%	-$244K	﹤0.01%	2166
2022 Q2	$641K	Buy	123,800 +65,100	+111%	+$377K	﹤0.01%	1948
2022 Q1	$447K	Buy	+58,700	New	+$503K	﹤0.01%	1977
2021 Q3	–	Sell	-17,400	Closed	-$303K	–	2117
2021 Q2	$303K	Buy	17,400 +600	+4%	+$9.6K	﹤0.01%	1930
2021 Q1	$319K	Buy	16,800 +1,900	+13%	+$47K	﹤0.01%	1833
2020 Q4	$349K	Buy	+14,900	New	+$264K	﹤0.01%	1651

Other funds holding AMSC

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Barrow, Hanley, Mewhinney & Strauss Dallas, Texas $33B AUM 40.62% 1-Year Est. Return

UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

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

State of Wisconsin Investment Board's AMSC Position: Q2 2026 in Review

State of Wisconsin Investment Board opened a new position in American Superconductor (AMSC) in Q2 2026: 5,908 shares worth $245K. The stake represents ﹤0.01% of the portfolio and ranks #2346 among its holdings. This is a return to the name: State of Wisconsin Investment Board previously reported a position in AMSC as recently as Q4 2025.

State of Wisconsin Investment Board first reported a position in AMSC in Q4 2020 and has held it in 11 quarters since. The position peaked at $641K in Q2 2022. 279 funds tracked by Wall St. Rank hold AMSC as of Q2 2026.

State of Wisconsin Investment Board held 5,908 shares of American Superconductor worth $245K as of Q2 2026.
American Superconductor was a new State of Wisconsin Investment Board position in Q2 2026.
American Superconductor made up ﹤0.01% of State of Wisconsin Investment Board's portfolio in Q2 2026, its #2346 holding.
State of Wisconsin Investment Board first reported a position in American Superconductor in Q4 2020 and has held it in 11 quarters since.
State of Wisconsin Investment Board's American Superconductor position peaked at $641K in Q2 2022.
279 funds tracked by Wall St. Rank held American Superconductor as of Q2 2026.

Based on State of Wisconsin Investment Board's 13F filing for Q2 2026, filed 14 Aug 2026.