Oil stocks are shares of companies involved in the exploration, production, refining, transportation, or sale of oil and related energy products. Their performance is often influenced by crude oil prices, global energy demand, production levels, and government regulations. Get alerts:ExxonMobil (XOM)ExxonMobil Corporation engages in the exploration and production of crude oil and natural gas in the United States and internationally. It operates through Upstream, Energy Products, Chemical Products, and Specialty Products segments. It explores for and extracts crude oil, natural gas, and natural gas liquids; markets and transports oil and gas; produces gas-to-liquids fuels and other products; and operates upstream and midstream infrastructure to deliver gas to market.