Stock Index Futures Erase Losses

December SP500 is trading at 2129.25, down 2.25. December Nasdaq 100 is trading at 4803.50, down 10.00 December Russell 2000 is trading at 1217.20, down 5.70. December Dow Industrial futures are trading at 18029, down 24. Stock index futures are trading very choppy and a good portion of the session losses have been erased. Chatter about corporate news and economic data due out Friday is making the rounds. Retail sales data and PPI ( producer prices) is set for release at 8:30 a.m. ET. The University of Michigan consumer confidence survey is due out at 10:00 a.m. ET. Federal Reserve Chair Janet Yellen is scheduled to speak around 1:30 p.m. ET before a conference hosted by the Federal Reserve Bank of Boston.