Schlumberger (SLB) closed the most recent trading day at $37.26, moving +1.17% from the previous trading session. The stock's change was more than the S&P 500's daily gain of 0.73%. At the same time, the Dow added 0.16%, and the tech-heavy Nasdaq gained 0.98%.Shares of the world's largest oilfield services company have depreciated by 16.73% over the course of the past month, underperforming the Oils-Energy sector's loss of 9.2% and the S&P 500's gain of 0.34%.Investors will be eagerly watching for the perfo ...