Mid Cap
Pollution & Treatment Controls
Stocks Ranked by
Market Capitalization
| Name | Market cap | Price |
Price change % |
|
|---|---|---|---|---|
1
Zurn Elkay Water Solutions
ZWS
$8.1B
| $8.1B | $48.82 | 0.08% |
|
2
Ceco Environmental
CECO
$4.12B
| $4.12B | $70.27 | 1.44% |
|
Mid 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 2 mid cap Pollution & Treatment Controls stocks — companies in the Pollution & Treatment Controls industry with a market cap between $2B and $10B — worth a combined $12.2B.
The largest by market cap are Zurn Elkay Water Solutions (ZWS) at $8.1B and Ceco Environmental (CECO) at $4.12B.
Among institutional investors, Ceco Environmental (CECO) drew the most net new fund positions in Q2 2026: 106 funds opened new positions, taking total fund holders up 78 (30%) quarter-over-quarter.
- Combined market cap: $12.2B across 2 stocks.
- Mid Cap: market cap between $2B and $10B.
- Largest constituent: Zurn Elkay Water Solutions (ZWS), $8.1B market cap.
- Most net new fund positions in Q2 2026: Ceco Environmental (CECO), +78 holders.
Market caps and prices updated daily; fund activity based on aggregated SEC 13F filings for Q2 2026.