Micro Cap
Pollution & Treatment Controls
Stocks Ranked by
Market Capitalization
| Name | Market cap | Price |
Price change % |
|
|---|---|---|---|---|
1
Arq
ARQ
$90.4M
| $90.4M | $2.07 | 3.27% |
|
2
Fuel Tech
FTEK
$59.6M
| $59.6M | $1.91 | 9.14% |
|
3
374Water
SCWO
$56.2M
| $56.2M | $3.17 | 2.26% |
|
4
ClearSign Technologies
CLIR
$27.5M
| $27.5M | $4.04 | 4.94% |
|
5
LiqTech
LIQT
$25M
| $25M | $0.7594 | 0.18% |
|
6
TOMI Environmental Solutions
TOMZ
$12.7M
| $12.7M | $1.56 | 1.27% |
|
7
Euro Tech Holdings
CLWT
$11.3M
| $11.3M | $1.53 | 3.16% |
|
|
RAIN
8
Rain Enhancement Technologies
RAIN
$8.43M
| $8.43M | $0.7204 | 0.08% |
|
Micro Cap Pollution & Treatment Controls Stocks at a Glance
Pollution and treatment control companies build filtration, emissions-control, waste-treatment, and recycling equipment. Environmental regulation drives demand — tightening standards create replacement and upgrade cycles largely independent of the economy.
There are 8 micro cap Pollution & Treatment Controls stocks — companies in the Pollution & Treatment Controls industry with a market cap under $250M — worth a combined $291M.
The largest by market cap are Arq (ARQ) at $90.4M, Fuel Tech (FTEK) at $59.6M and 374Water (SCWO) at $56.2M.
Among institutional investors, LiqTech (LIQT) drew the most net new fund positions in Q2 2026: 13 funds opened new positions, taking total fund holders up 11 (69%) quarter-over-quarter.
- Combined market cap: $291M across 8 stocks.
- Micro Cap: market cap under $250M.
- Largest constituent: Arq (ARQ), $90.4M market cap.
- Most net new fund positions in Q2 2026: LiqTech (LIQT), +11 holders.
Market caps and prices updated daily; fund activity based on aggregated SEC 13F filings for Q2 2026.