The term supermajor illustrates the six largest, non state-owned energy companies, as seen in popular financial mediums around the world. Trading under various names around the world, they're considered to be: ExxonMobil (XOM) BP (BP) Royal Dutch Shell (RDS) Total S.A. (TOT) Chevron Corporation (CVX) ConocoPhillips (COP) The supermajors began to appear in the late 1990s, in response to a severe deflation in oil prices. Large petroleum companies began to merge, often in an effort to improve… (More on Supermajor)