Q4 2018Q3 2018Q2 2018Q1 2018Q4 2017
Gross profit (MM)$4,743.0$3,493.0$3,546.0$3,500.0$4,660.0
Gross profit growth1.8%7.6%10.7%10.0%14.2%
Operating income (MM)$1,446.0$1,067.0$1,016.0$951.0$1,450.0
Operating income growth-0.3%10.2%20.4%12.0%21.7%
Net income (MM)$1,043.0$750.0$701.0$640.0$919.0
Net income growth13.5%7.1%36.1%17.4%18.0%
Diluted EPS$2.36$1.70$1.59$1.45$2.08
Diluted EPS growth13.1%7.0%35.8%17.3%17.9%