March SP500 is trading at 2272.00, up 8.50. March Nasdaq 100 is trading at 5059, up 24.25. March Russell 2000 is trading at 1374.5, up 15.6. March Dow Industrial futures are trading at 19834, up 31. Stock index futures are trading choppy and a little under the session highs. Market talk about corporate earnings and the U.S. economy is making the rounds.