Good morning, it's Tuesday, April 16th. I’m Lynn Norris and here are the Five Things You Must Know Before the Market Opens, presented by The Street: Here are five things you must know for Tuesday, April 16: First up, Stock Futures Rise as Focus Remains on Earnings U.S. stock futures were higher Tuesday as Wall Street's focus will remain, at least in the short term, on corporate earnings reports. Contracts tied to the Dow rose 67 points, futures for the S&P 500 gained 6.