TWO SIGMA INVESTMENTS, LP

Position in ERII — Energy Recovery, Inc.

CIK 1179392 NEW YORK, NY

Position in ERII

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

Position Value

$895,212

+$46,035 QoQ

Shares Held

88,899

+66.3% QoQ

Ownership

0.172%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Dec 2021

14 quarters on record

Voting authority Sole 99.66253838625856.ToString("F0")% Shared 0.ToString("F0")% None 0.3374616137414369.ToString("F0")%

Industrials · as of Mar 31, 2026

TWO SIGMA INVESTMENTS, LP holds $74,757,505 across 7 Pollution & Treatment Controls names. ERII ranks #3 (1.2% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	CECO	Ceco Environmental Corp	959,698	$57,178,806
2	ZWS	Zurn Elkay Water Solutions Corp	346,173	$15,522,397
3	ERII	Energy Recovery, Inc. This page	88,899	$895,212
4	VLTO	Veralto Corp	8,332	$736,715
5	ADUR	Aduro Clean Technologies Inc.	29,762	$312,203
6	ARQ	Arq, Inc.	28,700	$73,472
7	SCWO	374Water Inc.	13,627	$38,700

14 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$895,212	88,899	+66.3%	Shares	Sole	2026-05-15
2025-03-31	$849,177	53,441	+243.3%	Shares	Sole	2025-05-15
2024-12-31	$228,805	15,565	-76.9%	Shares	Sole	2025-02-14
2024-06-30	$896,410	67,450	-9.0%	Shares	Sole	2024-08-14
2024-03-31	$1,169,928	74,093	-38.8%	Shares	Sole	2024-05-15
2023-12-31	$2,281,071	121,076	+167.1%	Shares	Sole	2024-02-14
2023-09-30	$961,385	45,327	-36.7%	Shares	Sole	2023-11-14
2023-06-30	$2,000,381	71,570	-3.5%	Shares	Sole	2023-08-14
2023-03-31	$1,710,010	74,187	-30.5%	Shares	Sole	2023-05-15
2022-12-31	$2,188,065	106,787	-54.3%	Shares	Sole	2023-02-14
2022-09-30	$5,075,007	233,441	+125.4%	Shares	Sole	2022-11-14
2022-06-30	$2,011,135	103,560	+48.9%	Shares	Sole	2022-08-15
2022-03-31	$1,400,374	69,532	+295.2%	Shares	Sole	2022-05-16
2021-12-31	$378,095	17,594	—	Shares	Sole	2022-02-14
No filing history on record for this holder in this stock.