Q2 2015Q1 2015Q4 2014Q3 2014Q2 2014
Gross margin41.1%42.1%39.8%46.4%46.9%
Gross margin growth (bps)-580-331-315271312
Operating margin1.3%-7.5%-71.9%7.2%6.8%
Operating margin growth (bps)-552-1,028-7,490822-5
Net profit margin7.1%-50.2%-69.4%0.5%4.9%
Net profit margin growth (bps)223-4,560-6,579150106