Since we last mentioned oilfield service provider Schlumberger (SLB) in the November 21st issue of the Daily Stock Report, the shares have gained 37.5%. Their positioning within the SIA S&P 100 Index Report has remained in a sideways to upward trend, recently rising toward the top of the Green Favored Zone. Yesterday the shares finished in 8th place, up 3 spots on the day and up 25 spots in the last month.