First quarter
  2011 2010
Net sales Volvo Group, SEK M 71,577 58,617
Operating income Volvo Group, SEK M 6,522  2,799
  Operating income Industrial operations, SEK M 6,343  2,785
  Operating income Customer Finance, SEK M 179  14
Operating margin Volvo Group, % 9.1  4.8
Income after financial items, SEK M 5,847  2,228
Income for the period, SEK M 4,181  1,720
Diluted earnings per share, SEK 2.01  0.83
Return on shareholders' equity and rolling 12 months,% 19.0  (12.4)