[BRIEFING.COM] The S&P 500 (+0.03%) is up less than two points on Tuesday afternoon, giving back some of the brief afternoon highs reached over the last half hour.
Elsewhere, S&P 500 constituents Philip Morris International (PM 129.85, +10.89, +9.15%), Quest Diagnostics (DGX 157.77, +10.40, +7.06%), and Norfolk Southern (NSC 262.37, +14.21, +5.73%) pepper the top of the standings all following earnings.
Meanwhile, Georgia-based auto and industrial parts firm Genuine Parts (GPC 116.59, -26.53, -18.54%) is getting hit hard after this morning's earnings miss and downside guidance.