Summary: Here's everything you need to know before Tuesday's opening bell: Thomson Reuters said that it was in "advanced discussion" with Blackstone over the sale of its financial and risk business Jamie Dimon said he will stay at JPMorgan for another five years Exxon Mobil's CEO blogged about a plan to invest $50 billion in expanding its U.S. businesses Janet Yellen's swan song as Federal Reserve chief begins today U.S. stock futures pointed toward declines as investors worry over tech sector valuations & a rise in government bond yields Watch More with TheStreet: Here's What to Do With Your Bitcoin Once You Die Wait, Google Was Almost Called What? What Is 5G Technology? Video: 5 Insane McDonald's Meals You Can Only Try Abroad
