 Shares of Best Buy Inc. BBY, -0.61 rose 1.4 in premarket trading Tuesday, after the consumer electronics retailer reported fiscal second-quarter profit and revenue that fell less than forecast, helped by increasing online sales. Net income for the quarter to July 30 dropped to 306 million, or 1.35 a share, from 734 million, or 2.90 a share, in the year-ago period. 