GSA CAPITAL PARTNERS LLP

Position in ERII — Energy Recovery, Inc.

CIK 1362033 LONDON, X0

Position in ERII

as of Mar 31, 2026 · filed May 8, 2026 Compact

Position Value

$3,158,425

+$1,683,874 QoQ

Shares Held

313,647

+186.9% QoQ

Ownership

0.608%

of shares outstanding

% of Portfolio

0.22%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Sep 2020

10 quarters on record

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

Industrials · as of Mar 31, 2026

GSA CAPITAL PARTNERS LLP holds $4,385,128 across 4 Pollution & Treatment Controls names. ERII ranks #1 (72.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ERII	Energy Recovery, Inc. This page	313,647	$3,158,425
2	ARQ	Arq, Inc.	289,158	$740,244
3	ZWS	Zurn Elkay Water Solutions Corp	10,555	$473,286
4	ZONE	CleanCore Solutions, Inc.	37,004	$13,173

10 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$3,158,425	313,647	+186.9%	Shares	Sole	2026-05-08
2025-12-31	$1,474,551	109,307	+167.4%	Shares	Sole	2026-02-06
2025-09-30	$630,307	40,876	-44.2%	Shares	Sole	2025-11-07
2025-06-30	$936,837	73,305	+413.0%	Shares	Sole	2025-07-22
2025-03-31	$227,068	14,290	-88.6%	Shares	Sole	2025-05-08
2024-06-30	$1,668,572	125,551	+790.4%	Shares	Sole	2024-08-15
2023-03-31	$325,028	14,101	-72.1%	Shares	Sole	2023-05-12
2022-06-30	$980,379	50,483	-18.5%	Shares	Sole	2022-08-09
2022-03-31	$1,248,257	61,979	+434.3%	Shares	Sole	2022-05-11
2020-09-30	$95,111	11,599	—	Shares	Sole	2020-11-06
No filing history on record for this holder in this stock.