S&P 500 Index Futures In Danger Of Surrendering All Of Thursday's Gains By: Benzinga via Benzinga March 13, 2015 at 11:41 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: SPDR S&P 500 ETF Trust