CHARLES SCHWAB INVESTMENT MANAGEMENT INC

Position in ERII — Energy Recovery, Inc.

CIK 884546 SAN FRANCISCO, CA

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Position in ERII

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$4,343,070

-$1,654,449 QoQ

Shares Held

431,288

-3.0% QoQ

Ownership

0.837%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in ERII Over Time

Shares Held

Position Value (USD)

Position in Pollution & Treatment Controls

Industrials · as of Mar 31, 2026

CHARLES SCHWAB INVESTMENT MANAGEMENT INC holds $260,025,688 across 6 Pollution & Treatment Controls names. ERII ranks #5 (1.7% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	VLTO	Veralto Corp	1,603,336	$141,766,969
2	ZWS	Zurn Elkay Water Solutions Corp	2,085,932	$93,533,190
3	CECO	Ceco Environmental Corp	247,499	$14,745,990
4	PCT	PureCycle Technologies, Inc.	1,051,608	$5,457,845
5	ERII	Energy Recovery, Inc. This page	431,288	$4,343,070
6	ARQ	Arq, Inc.	69,775	$178,624

All Filings in ERII

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25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$4,343,070	431,288	-3.0%	Shares	Sole	2026-05-15
2025-12-31	$5,997,519	444,590	-1.0%	Shares	Sole	2026-02-13
2025-09-30	$6,927,805	449,274	-0.2%	Shares	Sole	2025-11-10
2025-06-30	$5,755,345	450,340	-4.5%	Shares	Sole	2025-08-12
2025-03-31	$7,491,976	471,490	-0.8%	Shares	Sole	2025-09-15
2024-12-31	$6,989,453	475,473	+1.5%	Shares	Sole	2025-02-06
2024-09-30	$8,149,632	468,639	+1.6%	Shares	Sole	2024-11-12
2024-06-30	$6,129,334	461,199	+3.8%	Shares	Sole	2024-08-12
2024-03-31	$7,018,323	444,479	+1.2%	Shares	Sole	2024-05-09
2023-12-31	$8,274,622	439,205	+1.3%	Shares	Sole	2024-02-06
2023-09-30	$9,197,822	433,655	+3.2%	Shares	Sole	2023-11-08
2023-06-30	$11,750,403	420,408	+1.6%	Shares	Sole	2023-08-10
2023-03-31	$9,542,169	413,977	-0.3%	Shares	Sole	2023-05-12
2022-12-31	$8,509,353	415,293	+3.0%	Shares	Sole	2023-02-13
2022-09-30	$8,765,133	403,180	+30.5%	Shares	Sole	2022-11-14
2022-06-30	$5,998,080	308,861	+8.6%	Shares	Sole	2022-08-15
2022-03-31	$5,726,949	284,357	+2.6%	Shares	Sole	2022-05-13
2021-12-31	$5,958,038	277,247	+0.4%	Shares	Sole	2022-02-11
2021-09-30	$5,256,618	276,228	-4.1%	Shares	Sole	2021-11-16
2021-06-30	$6,561,847	288,053	+4.9%	Shares	Sole	2021-08-16
2021-03-31	$5,036,970	274,644	+1.5%	Shares	Sole	2021-05-17
2020-12-31	$3,691,188	270,615	+5.9%	Shares	Sole	2021-02-16
2020-09-30	$2,095,255	255,519	+12.1%	Shares	Sole	2020-11-13
2020-06-30	$1,731,941	227,887	+8.1%	Shares	Sole	2020-08-20
2020-03-31	$1,568,017	210,755	—	Shares	Sole	2020-05-15
No filing history on record for this holder in this stock.