STATE OF WISCONSIN INVESTMENT BOARD

Position in AMSC — American Superconductor Corp /De/

CIK 854157 MADISON, WI

Position in AMSC

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$245,241

-$77,872 QoQ

Shares Held

5,908

-47.4% QoQ

Ownership

0.012%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#185

of 276 holders

Holding Since

Dec 2020

11 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Industrials · as of Jun 30, 2026

STATE OF WISCONSIN INVESTMENT BOARD holds $773,161,659 across 46 Specialty Industrial Machinery names. AMSC ranks #43 (0.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	GEV	GE Vernova Inc.	144,196	$169,410,112
2	ETN	Eaton Corp plc	207,029	$88,219,197
3	PH	Parker-Hannifin Corp	67,370	$65,895,944
4	CMI	Cummins Inc	81,218	$57,925,489
5	EMR	Emerson Electric Co	300,122	$42,962,464
6	ITW	Illinois Tool Works Inc	145,635	$39,389,898
7	AME	Ametek Inc/	132,183	$31,980,355
8	ROK	Rockwell Automation, Inc	60,088	$29,748,367

11 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$245,241	5,908	-47.4%	Shares	Sole	2026-08-14
2025-12-31	$323,113	11,227	+75.3%	Shares	Sole	2026-02-17
2025-09-30	$380,333	6,404	-68.8%	Shares	Sole	2025-11-14
2023-03-31	$100,655	20,500	-59.0%	Shares	Sole	2023-05-15
2022-12-31	$184,000	50,000	-34.7%	Shares	Sole	2023-02-14
2022-09-30	$335,508	76,600	-38.1%	Shares	Sole	2022-11-14
2022-06-30	$641,284	123,800	+110.9%	Shares	Sole	2022-08-15
2022-03-31	$446,707	58,700	+237.4%	Shares	Sole	2022-05-13
2021-06-30	$302,586	17,400	+3.6%	Shares	Sole	2021-08-12
2021-03-31	$318,528	16,800	+12.8%	Shares	Sole	2021-05-17
2020-12-31	$348,958	14,900	—	Shares	Sole	2021-02-03
No filing history on record for this holder in this stock.