Stock Index Futures Mixed in Pre-Market

December SP500 is trading at 2124.00, up 0.50. December Nasdaq 100 is trading at 4803.00, down 3.75 December Russell 2000 is trading at 1183.00, down 0.8. December Dow Industrial futures are trading at 18079, down 2. Stock index futures are trading very choppy with a fairly wide overnight range. Chatter about corporate earnings and headline news has kept buyers and sellers active.