 Shares of Lamb Weston Holdings Inc. LW, 2.90 jumped 2.0 in premarket trading Wednesday, after the potato supplier reported fiscal first-quarter profit that beat expectations, higher prices helped offset a volume decline. Net income for the quarter to Aug. 28 jumped to 231.9 million, or 1.60 a share, from 29.8 million, or 20 cents a share, in the year-ago period. 