S&P 500 Index Futures Trading Lower In Volatile Session By: Benzinga via Benzinga June 04, 2015 at 10:34 AM EDT Joel Elconin is the co-host of Benzinga's #PreMarket Prep, a daily trading idea radio show. S&P 500 index futures were trading ... Read More >> Related Stocks: JPMorgan Chase & Co Procter & Gamble SPDR S&P 500 ETF Trust