 Shares of Ralph Lauren Corp. RL, -5.16 rallied 4.2 in premarket trading Thursday, after the luxury lifestyle products company reported fiscal second-quarter profit that fell less than expected while revenue rose above forecasts. Net income for the quarter to Oct. 1 fell to 150.5 million, or 2.18 a share, from 193.3 million, or 2.57 a share, in the year-ago period. 