VanEck Vectors® Unconventional Oil & Gas ETF (FRAK®) seeks to replicate as closely as possible, before fees and expenses, the price and yield performance of the MVIS® Global Unconventional Oil & Gas Index (MVFRAKTR), which is intended to track the overall performance of companies involved in the exploration, development, extraction, and/or production of unconventional oil and natural gas. Unconventional oil and gas includes coal bed methane, coal seam gas, shale oil, shale gas, tight natural gas, tight oil, tight sands, in situ oil sands, and enhanced oil recovery.