S&P 500 Index Futures Trading Lower In Volatile Session By: Benzinga via Benzinga December 18, 2015 at 10:40 AM EST S&P 500 index futures are trading lower by 12 points at 2012.75 in Friday's session. The index is attempting to find ... Read More >> Related Stocks: Amazon.com Berkshire Hathaway Dow Jones Industrial Average (EOD) SPDR S&P 500 ETF Trust