Save for later Print Download Share LinkedIn Twitter Five months ago, Exxon Mobil was proudly commemorating its 100th anniversary of being listed on the New York Stock Exchange. But history is changing for the Big Oil juggernaut -- and energy equities at large. The US supermajor is among three firms that will be dropped from the 30-stock Dow Jones Industrial Average at the end of this month, ending its 92-year run on the vaunted blue-chip index. Out: Exxon Mobil, Pfizer, Raytheon Technologies In: Salesforce.com, Amgen, Honeywell International