Chevron Corporation · San Ramon, CA United States ·(NYSE: CVX)

Having added Texaco's star (and subsequently Unocal's authority) to its stripes, Chevron can pull rank on its rivals. Among the largest US integrated oil companies, along with Exxon Mobil and ConocoPhillips, it has proved reserves of 11.2 billion barrels of oil equivalent and a daily production of 2.5 million barrels of oil equivalent, and it also owns interests in chemicals, mining, pipelines, and power production businesses. The company, which began to restructure its refinery and retail businesses in 2008, owns or has stakes in 9,700 gas stations in the US that operate under the Chevron and Texaco brands. Outside the US it owns or has stakes in 15,300 gas stations, which also use the Caltex brand. To read the full description, subscribe now.