Good morning, it's Tuesday, August 13th. I’m Lynn Norris and here are the Five Things You Must Know Before the Market Opens, presented by The Street: First up, Stock Futures Point Lower Amid Hong Kong Unrest, Global Trade Tensions U.S. stock futures were lower on Tuesday as unrest in Hong Kong and the ongoing trade tensions between the U.S and China made for jittery investors. Contracts tied to the Dow fell 63 points, futures for the S&P 500 were down 7.30 points, and Nasdaq futures slumped 30.