ExxonMobil, an American multinational oil and gas corporation presently based out of Texas, has had one of the longest histories of any company in its industry. A direct descendant of John D. Rockefeller's Standard Oil, the company traces its roots as far back as 1866 to the founding of the Vacuum Oil Company, which would become part of ExxonMobil through its own merger with Mobil during the 1930s. The present name of the company comes from a 1999 merger of Standard Oil's New Jersey and New York successors, which adopted the names Exxon and Mobil respectively throughout the middle of the 20th century. Because of Standard Oil of New Jersey's ownership over all Standard Oil assets at the time of the 1911 breakup, ExxonMobil is seen by some as the definitive continuation of Standard Oil today.[1]
Today, ExxonMobil is the largest investor-owned oil and gas company in the world by revenue and market capitalization. The company is frequently included near the top of the Fortune 500 and Fortune Global 500, and trails only Saudi Aramco in market capitalization among all the world's energy firms.[2][3][4]