Is ExxonMobil a Millionaire Maker?

ExxonMobil is a well-run energy company, but it is still beholden to the volatility of oil prices.ExxonMobil (XOM 1.39%) is among the largest energy companies in the world. Whether it is using the Exxon, Mobil, or Esso nameplate, there's probably an ExxonMobil gas station somewhere near you. But being big and well known isn't enough to make the stock a millionaire maker. Here's what investors need to understand before they buy ExxonMobil.1. ExxonMobil is an industry giantExxonMobil has a market cap of rough ...