Pollution & Treatment Controls

Week ending 29 May 2026 · Index 1393.39 · Weekly return 2.69%. Constituents are ranked by weekly return.

Sector Industrials

Universe NASDAQ, NYSE

Price basis Adjusted weekly close

Index chart

Index Value Trend Line Fair Value Activity Lines

For the week ending 29 May 2026, Pollution & Treatment Controls advanced 2.69% with 6 advancing, 5 declining, and 2 unchanged constituents.

Ticker Company Exchange Open High Low Close Return

DEVS DevvStream Corp. Common Stock NASDAQ 0.13 0.43 0.11 0.30 90.36%

TOMZ TOMI Environmental Solutions Inc NASDAQ 0.79 0.96 0.78 0.93 19.05%

ADUR Aduro Clean Technologies Inc. Common Stock NASDAQ 15.09 17.16 14.42 16.85 15.49%

ARQ Arq Inc NASDAQ 2.48 2.85 2.39 2.76 12.20%

PCT Purecycle Technologies Holdings Corp NASDAQ 11.63 13.08 11.56 12.39 9.45%

SCWO 374Water Inc. Common Stock NASDAQ 2.40 2.86 2.25 2.47 1.65%

CLWT Euro Tech Holdings Company Ltd NASDAQ 1.17 1.36 1.16 1.22 0.00%

FTEK Fuel Tech Inc NASDAQ 1.50 1.54 1.46 1.48 0.00%

ZWS Zurn Elkay Water Solutions Corporation NYSE 48.33 49.19 45.79 47.00 -2.08%

CLIR ClearSign Combustion Corporation NASDAQ 4.61 4.88 4.27 4.63 -4.54%

ERII Energy Recovery Inc NASDAQ 8.92 9.00 8.09 8.17 -7.68%

CECO CECO Environmental Corp. NASDAQ 84.05 92.00 73.14 74.75 -8.52%

LIQT LiqTech International Inc NASDAQ 1.80 2.14 1.05 1.10 -38.89%