Updated from 7:05 a.m. EDT. NEW YORK (TheStreet) -- Here are 10 things you should know for Tuesday, March 31: 1. -- U.S. stock futures were drooping Tuesday on the last day of the first quarter. The day will be a busy one for economic data and presentations from Federal Reserve presidents. European stocks lacked direction Tuesday, as weakness in Asia and worries over Greece and deflation seemed to weigh on sentiment even as the economy in Germany showed continued strength. Must Read: Warren Buffett's Top 10 Dividend Stocks 2.