S&P 500 Index Futures Trading Higher

S&P 500 index futures are trading higher by 17 points at 1877.25 in Tuesday's session. The index has been able to maintain most of its gains from from pre-market trading. All but one of the top 10 components of the index are in the green. The lone loser being Exxon Mobil XOM shares, which are trading lower by $0.11 at $80.92. Leading the way on the upside is Amazon.com, Inc. AMZN shares, which are trading higher by $9.50 at $516.58.