 Shares of Korn Ferry KFY, 3.86 shot up 4.0 in premarket trading Wednesday, after the staffing services company reported fiscal fourth-quarter record profit and revenue that rose above expectations, and provided an upbeat outlook, with shortages of skilled labor expected to persist for years to come. Net income for the quarter to April 30 increased to 91.7 million, or 1.70 a share, from 66.2 million, or 1.21 a share, in the year-ago period. 