Exxon Mobil (XOM)

In upstream energy, ExxonMobil explores for and produces crude oil, natural gas, and natural gas liquids across major basins and offshore regions. Its portfolio includes large-scale positions in areas such as the Permian Basin, Guyana, liquefied natural gas, and other conventional and deepwater developments. In 2025, the company reports production of 3.3 million barrels of liquids and 8.4 billion cubic feet of natural gas per day, with year-end reserves of 19.3 billion barrels of oil equivalent, most of them liquids.

The downstream business turns crude oil and other feedstocks into transportation fuels, base stocks, asphalt, and related products. ExxonMobil is among the largest refiners globally, with reported refining capacity of about 4.1 million barrels per day. Its chemical operations produce commodity and specialty materials used in packaging, automotive components, industrial products, consumer goods, and construction.

The company also invests in carbon capture and storage, hydrogen, advanced fuels, and other technologies through its low-carbon initiatives, although oil, gas, refining, and chemicals remain the core of the business. ExxonMobil’s scale, integrated model, technical expertise, and long-lived resource base make it a bellwether for the global energy sector.