S&P 500 Index Futures Trading Lower In Volatile Session By: Benzinga via Benzinga June 12, 2015 at 12:03 PM EDT Joel Elconin is the co-host of Benzinga's #PreMarket Prep, a daily trading idea radio show. S&P 500 index futures are trading ... Read More >> Related Stocks: Exxon Mobil SPDR S&P 500 ETF Trust