Largest environmental services companies
Every US-listed environmental services company we cover — 14 of them — ranked by market capitalisation, with revenue and earnings taken from their SEC filings.
Combined market cap
$238.225 B
0.2% of all US-listed value
Companies
14
Ranked #63 of 152 industries
Average
$17.016 B
Mean market cap per company
| # | Name | Market cap | Close | Session | Country |
|---|---|---|---|---|---|
| 1 | Waste ManagementWM | $91.0B | $227.68 | -0.58% | United States |
| 2 | Republic ServicesRSG | $66.0B | $214.56 | +2.37% | United States |
| 3 | Waste ConnectionsWCN | $42.5B | $166.71 | -0.41% | Canada |
| 4 | Clean HarborsCLH | $16.3B | $308.17 | +0.17% | United States |
| 5 | GFL EnvironmentalGFL | $15.5B | $41.32 | -0.55% | Canada |
| 6 | Casella Waste SystemsCWST | $5.69B | $89.41 | -1.16% | United States |
| 7 | OIO GroupOIO | $640.4M | $1.84 | -2.13% | Singapore |
| 8 | Perma Fix Environmental ServicesPESI | $383.4M | $18.08 | +1.57% | United States |
| 9 | CitroTechCITR | $131.9M | $5.90 | -1.01% | United States |
| 10 | Sky QuarrySKYQ | $45.2M | $3.50 | -9.33% | United States |
| 11 | Quest ResourceQRHC | $31.6M | $1.50 | +18.11% | United States |
| 12 | AvalonAWX | $10.1M | $2.60 | +1.57% | United States |
| 13 | RenX EnterprisesRENX | $5.10M | $1.95 | +1.56% | United States |
| 14 | VivakorVIVK | $2.56M | $1.26 | -11.89% | United States |
All 14 companies. One row per company — secondary share classes are folded into their primary listing. Updated 9 Aug 2026.
Sectors environmental services companies sit in
This industry spans more than one sector — Nasdaq classifies each company individually.
Other industries
Semiconductors 100Computer Software: Programming Data Processing 77Computer Software: Prepackaged Software 232Computer Manufacturing 10Biotechnology: Pharmaceutical Preparations 501Major Banks 245Industrial Machinery/Components 209Catalog/Specialty Distribution 30Business Services 93Commercial Banks 35Auto Manufacturing 29Integrated oil Companies 18Investment Bankers/Brokers/Service 68Real Estate Investment Trusts 179Department/Specialty Retail Stores 14Oil & Gas Production 116Telecommunications Equipment 82Beverages (Production/Distribution) 35Electronic Components 21Finance: Consumer Services 163Electric Utilities: Central 59Consumer Electronics/Appliances 23Natural Gas Distribution 29Medical Specialities 44All industries →
Figures come from SEC filings and daily market prices. Companies listed only outside the US are not covered — see methodology.