Largest pollution control equipment companies
Every US-listed pollution control equipment company we cover, 5 of them, ranked by market capitalisation, with revenue and earnings taken from their SEC filings.
Combined market cap
$26.290 B
0.03% of all US-listed value
Companies
5
Ranked #124 of 152 industries
Average
$5.258 B
Mean market cap per company
| # | Name | Market cap | Close | Session | Country |
|---|---|---|---|---|---|
| 1 | Madison Air SolutionsMAIR | $12.0B | $24.00 | -0.50% | United States |
| 2 | DonaldsonDCI | $10.1B | $87.16 | -0.11% | United States |
| 3 | Ceco EnvironmentalCECO | $3.84B | $65.55 | -7.88% | United States |
| 4 | Perma-Pipe InternationalPPIH | $255.4M | $31.17 | -1.70% | United States |
| 5 | Fuel TechFTEK | $51.7M | $1.66 | -0.90% | United States |
All 5 companies. One row per company, with secondary share classes folded into their primary listing. Updated 10 Oct 2026.
Sectors pollution control equipment companies sit in
Other industries
Semiconductors 100Computer Software: Programming Data Processing 77Computer Software: Prepackaged Software 232Computer Manufacturing 10Biotechnology: Pharmaceutical Preparations 500Major Banks 245Industrial Machinery/Components 211Catalog/Specialty Distribution 30Business Services 93Commercial Banks 35Auto Manufacturing 29Integrated oil Companies 16Oil & Gas Production 116Investment Bankers/Brokers/Service 68Department/Specialty Retail Stores 13Real Estate Investment Trusts 175Telecommunications Equipment 84Beverages (Production/Distribution) 36Electronic Components 21Electric Utilities: Central 61Finance: Consumer Services 165Consumer Electronics/Appliances 23Biotechnology: Biological Products (No Diagnostic Substances) 160Medical Specialities 44All industries →
Figures come from SEC filings and daily market prices. Companies listed only outside the US are not covered: see methodology.