Schlumberger (SLB +4.3%) is up strong after reporting Q4 earnings that came in higher than...

Schlumberger (SLB +4.3%) is up strong after reporting Q4 earnings that came in higher than expected after the gloomy guidance it provided just a month ago. While some analysts like SLB's solid performance amid a challenging period for oil service companies, Weeden's Michael Purves suggests investors cash out of the volatile stock and "wait for re-entry points."