Q2 2018Q1 2018Q4 2017Q3 2017Q2 2017
Gross margin40.4%39.0%38.2%39.9%40.3%
Gross margin growth (bps)990-166-55
Operating margin5.4%4.3%14.0%2.3%4.6%
Operating margin growth (bps)861744339258
Net profit margin3.0%2.5%15.3%0.6%2.1%
Net profit margin growth (bps)8910597134190