The Financial Post reports in its Tuesday edition that Lululemon athletica raised its guidance for sales and earnings after a strong holiday period for the activewear maker. A Bloomberg dispatch to the Post quotes a premarket release from the company Monday saying that it expects net revenue of $3.17-billion to $3.19-billion for the fourth quarter, up from a previous range that topped out at $3.17-billion (all figures U.S.). It now sees diluted earnings per share of as much as $5, up from a previous high end of $4.93. With its strong end to the year, Lululemon has bucked trends affecting rivals such as Nike, which said in December it was looking for as much as $2-billion in cost savings amid a weaker sales outlook in China and around the world. Lululemon shares were 3.3 per cent lower in premarket trading Monday as some investors expected a bigger upgrade. The upgrade comes after Lululemon took a more cautious tone in December. Its shares closed Monday at $491.48, up 38 cents on Nasdaq.