Berkshire Hathaway Inc. (BRK-B) vs Exxon Mobil Corporation (XOM)

Berkshire Hathaway Inc. is a publicly traded diversified holding company with major businesses and investments across insurance, freight rail, energy, manufacturing, retail, and financial assets. Its shares give investors exposure to the operating performance of its subsidiaries as well as the value of its large public-equity portfolio. The company's performance is influenced by insurance underwriting results, investment returns, economic activity, interest rates, capital allocation, and broader market conditions.

Exxon Mobil Corporation is an integrated oil and gas company engaged in the global exploration, production, and refining of petroleum. In 2025, the company produced 3.3 million barrels of liquids per day and 8.4 billion cubic feet of natural gas daily. As of the end of 2025, ExxonMobil reported 19.3 billion barrels of oil equivalent in reserves, with liquids accounting for 69% of the total. The company is also among the world’s largest refiners, with total global refining capacity of 4.1 million barrels of oil per day, and ranks as a leading producer of both commodity and specialty chemicals.