Oil stocks are shares of publicly traded companies involved in the exploration, production, refining or distribution of crude oil and petroleum products. Investors buy oil stocks to gain exposure to the energy sector and potentially profit from changes in global oil prices. These companies had the highest dollar trading volume of any Oil stocks within the last several days. It operates through Upstream, Energy Products, Chemical Products, and Specialty Products segments. The company's Oil and Gas segment explores for, develops, and produces oil and condensate, natural gas liquids (NGLs), and natural gas.