VanEck Environmental Services ETF (EVX) seeks to replicate as closely as possible, before fees and expenses, the price and yield performance of the MarketVector Global Environmental Services Index (MVEVX), which is intended to track the overall performance of companies involved primarily in environmental consulting and modeling, wastewater management and drainage solutions, general waste management services, environmental remediation and protection, air filtration (non-industrial end markets), and carbon-capture, waste-to-energy, and biofuel technologies (excluding certain recycling activities).