S&P 500 Index Futures Under Selling Pressure By: Benzinga via Benzinga March 24, 2015 at 13:55 PM 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: Microsoft SPDR S&P 500 ETF Trust