ExxonMobil ExxonMobil Exxon Mobil Corporation, doing business as ExxonMobil, is an American multinational oil and gas corporation headquartered in Irving, Texas. It is the largest direct descendant of John D. Rockefeller's Standard Oil Company, and was formed on November 30, 1999 by the merger of Exxon (formerly the Standard Oil Company of New Jersey) and Mobil (formerly the Standard Oil Company of New York). The world's 9th largest company by revenue, ExxonMobil from 1996 to 2017 varied from the first to sixth largest publicly traded company by market capitalization. The company was ranked ninth globally in the Forbes Global 2000 list
Market capitalization US$40 trillion in September 2008. In 2014 and 2015, global market capitalization was US$68 trillion and US$67 trillion, respectively. Market cap is given by the formula formula_1, where "MC" is the market capitalization, "N" is the number of shares outstanding, and "P" is the closing price per share. For example, if some company has 4 million shares outstanding and the closing price per share is $20, its market cap is then $80 million. If the closing price per share rises to $21, the market cap becomes $84 million. If it drops to $19 per share, the market cap falls to