The BalancedInvestor Club

Pollution Treatment Controls Industry Analysis

19 companies analyzed • Returns from -152.1% to +216.0% • Data through May 1, 2026

Company List (19 Results)

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Industry Performance

(19/19 companies)
2025-05-05 → 2026-05-01
Weighted Avg
+9.3%
Best
+216.0%
Worst
-152.1%
Returns Distribution
Top 5
1. CLIR+216.0%2. SCWO+211.6%3. CHNR+204.9%4. CECO+107.5%5. FTEK+50.8%
Bottom 5
1. ZONE-152.1%2. ARQ-58.7%3. ERII-34.5%4. PCTTU-24.7%5. TOMZ-14.3%

CLIR

+216.0%

ClearSign Combustion Corporation

SCWO

+211.6%

374Water Inc. Common Stock

CHNR

+204.9%

China Natural Resources Inc

CECO

+107.5%

CECO Environmental Corp.

FTEK

+50.8%

Fuel Tech Inc

DEVS

+45.9%

DevvStream Corp. Common Stock

LIQT

+41.8%

LiqTech International Inc

ZWS

+38.9%

Zurn Elkay Water Solutions Corporation

FSS

+33.0%

Federal Signal Corporation

RAINW

+29.0%

Rain Enhancement Technologies Holdco, Inc. Warrants

PCT

+16.1%

Purecycle Technologies Holdings Corp

PCTTW

+2.9%

PureCycle Technologies Inc

CLWT

+2.6%

Euro Tech Holdings Company Ltd

VLTO

-8.8%

Veralto Corporation

TOMZ

-14.3%

TOMI Environmental Solutions Inc

PCTTU

-24.7%

Purecycle Technologies Holdings Corp Unit

ERII

-34.5%

Energy Recovery Inc

ARQ

-58.7%

Arq Inc

ZONE

-152.1%

CleanCore Solutions Inc.

Methodology

The Weighted Average return (+9.3%) is calculated using market capitalization as weights. This gives larger companies more influence on the average, providing a more market-representative view.

17 companies with market cap data included: CLIR, SCWO, CHNR, CECO, FTEK, DEVS, LIQT, ZWS, FSS, PCT and 7 more...

Educational content · Not investment advice or recommendations

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