Stock Index Futures Plunge

December SP500 is trading at 2096.00, down 39.50 December Nasdaq 100 is trading at 4719.00, down 82.50. December Russell 2000 is trading at 1169.3, down 22.8. December Dow Industrial futures are trading at 18022, down 260. Stock index futures have plunged. Trading is brisk and some general selling is occurring.