CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM

Pension

Position in ERII — Energy Recovery, Inc.

CIK 1081019 WEST SACRAMENTO, CA

Back to ERII Full portfolio

Position in ERII

as of Mar 31, 2026 · filed May 18, 2026 Compact

Position Value

$489,643

-$171,474 QoQ

Shares Held

48,624

-0.8% QoQ

Ownership

0.094%

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

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM holds $47,271,251 across 6 Pollution & Treatment Controls names. ERII ranks #5 (1.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	VLTO	Veralto Corp	407,557	$36,036,189
2	ZWS	Zurn Elkay Water Solutions Corp	172,405	$7,730,640
3	CECO	Ceco Environmental Corp	34,758	$2,070,881
4	PCT	PureCycle Technologies, Inc.	181,015	$939,467
5	ERII	Energy Recovery, Inc. This page	48,624	$489,643
6	ARQ	Arq, Inc.	1,731	$4,431

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	$489,643	48,624	-0.8%	Shares	Sole	2026-05-18
2025-12-31	$661,117	49,008	-7.7%	Shares	Sole	2026-02-17
2025-09-30	$818,462	53,078	+0.0%	Shares	Sole	2025-11-14
2025-06-30	$678,311	53,076	-1.5%	Shares	Sole	2025-08-14
2025-03-31	$855,914	53,865	0.0%	Shares	Sole	2025-05-15
2024-12-31	$791,815	53,865	-0.6%	Shares	Sole	2025-03-18
2024-09-30	$941,929	54,165	-2.7%	Shares	Sole	2025-04-04
2024-06-30	$739,482	55,642	-1.4%	Shares	Sole	2025-04-08
2024-03-31	$891,013	56,429	-5.0%	Shares	Sole	2024-05-16
2023-12-31	$1,119,359	59,414	-4.3%	Shares	Sole	2024-02-13
2023-09-30	$1,316,992	62,093	-1.6%	Shares	Sole	2023-11-14
2023-06-30	$1,763,868	63,108	-2.5%	Shares	Sole	2023-08-21
2023-03-31	$1,492,141	64,735	-1.4%	Shares	Sole	2023-05-09
2022-12-31	$1,345,434	65,663	+0.2%	Shares	Sole	2023-02-14
2022-09-30	$1,424,861	65,541	-3.0%	Shares	Sole	2022-11-21
2022-06-30	$1,311,821	67,550	+36.9%	Shares	Sole	2022-08-15
2022-03-31	$993,727	49,341	-9.0%	Shares	Sole	2022-05-16
2021-12-31	$1,165,768	54,247	+1.9%	Shares	Sole	2022-02-15
2021-09-30	$1,012,871	53,225	-8.4%	Shares	Sole	2021-11-15
2021-06-30	$1,324,315	58,135	-4.0%	Shares	Sole	2021-08-16
2021-03-31	$1,110,193	60,534	-0.4%	Shares	Sole	2021-05-18
2020-12-31	$828,861	60,767	0.0%	Shares	Sole	2021-02-16
2020-09-30	$498,289	60,767	+8.0%	Shares	Sole	2020-11-17
2020-06-30	$427,560	56,258	0.0%	Shares	Sole	2020-08-17
2020-03-31	$418,559	56,258	—	Shares	Sole	2020-05-13
No filing history on record for this holder in this stock.