CHARLES SCHWAB INVESTMENT MANAGEMENT INC

Position in AMSC — American Superconductor Corp /De/

CIK 884546 SAN FRANCISCO, CA

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Position in AMSC

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

Position Value

$16,567,678

+$3,521,415 QoQ

Shares Held

399,125

+3.6% QoQ

Ownership

0.824%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#24

of 276 holders

Holding Since

Mar 2020

23 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Common Shares in AMSC Over Time

Shares Held

Position Value (USD)

Position in Specialty Industrial Machinery

Industrials · as of Jun 30, 2026

CHARLES SCHWAB INVESTMENT MANAGEMENT INC holds $10,603,267,139 across 56 Specialty Industrial Machinery names. AMSC ranks #41 (0.2% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	GEV	GE Vernova Inc.	2,114,132	$2,483,809,121
2	PH	Parker-Hannifin Corp	1,441,744	$1,410,198,640
3	ETN	Eaton Corp plc	2,370,767	$1,010,231,233
4	ROK	Rockwell Automation, Inc	1,524,563	$754,780,649
5	CMI	Cummins Inc	887,180	$632,745,647
6	EMR	Emerson Electric Co	3,565,525	$510,404,903
7	ITW	Illinois Tool Works Inc	1,716,631	$464,297,186
8	AME	Ametek Inc/	1,435,060	$347,198,415

All Filings in AMSC

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23 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$16,567,678	399,125	+3.6%	Shares	Sole	2026-08-14
2026-03-31	$13,046,263	385,414	-0.5%	Shares	Sole	2026-05-15
2025-12-31	$11,152,451	387,507	-0.2%	Shares	Sole	2026-02-13
2025-09-30	$23,056,742	388,226	+20.2%	Shares	Sole	2025-11-10
2025-06-30	$11,849,329	322,958	+4.3%	Shares	Sole	2025-08-12
2025-03-31	$5,617,613	309,681	-2.6%	Shares	Sole	2025-09-15
2024-12-31	$7,829,113	317,869	+4.4%	Shares	Sole	2025-02-06
2024-09-30	$7,186,860	304,528	+211.1%	Shares	Sole	2024-11-12
2024-06-30	$2,289,249	97,873	+513.0%	Shares	Sole	2024-08-12
2024-03-31	$215,700	15,966	0.0%	Shares	Sole	2024-05-09
2023-12-31	$177,861	15,966	0.0%	Shares	Sole	2024-02-06
2023-09-30	$120,543	15,966	0.0%	Shares	Sole	2023-11-08
2023-06-30	$99,947	15,966	0.0%	Shares	Sole	2023-08-10
2023-03-31	$78,393	15,966	-77.2%	Shares	Sole	2023-05-12
2022-03-31	$533,651	70,125	+1.1%	Shares	Sole	2022-05-13
2021-12-31	$754,538	69,351	0.0%	Shares	Sole	2022-02-11
2021-09-30	$1,011,137	69,351	+4.5%	Shares	Sole	2021-11-16
2021-06-30	$1,154,226	66,373	-0.3%	Shares	Sole	2021-08-16
2021-03-31	$1,262,072	66,565	+1.6%	Shares	Sole	2021-05-17
2020-12-31	$1,533,728	65,488	+26.9%	Shares	Sole	2021-02-16
2020-09-30	$747,254	51,606	-3.0%	Shares	Sole	2020-11-13
2020-06-30	$432,646	53,216	+0.2%	Shares	Sole	2020-08-20
2020-03-31	$291,075	53,116	—	Shares	Sole	2020-05-15
No filing history on record for this holder in this stock.