SECTOR COMMENTARYEnergy stocks closed mostly higher, outperforming the broader markets, which closed mixed. The services were the best performing subgroup on the strength of Schlumberger, which surged over 4.2% following strong earnings results which beat expectations on both the top and bottom lines. The refiners were laggards on the day and were the only group to close in the red.Money managers raised their net long U.S. crude futures and options positions in the week to January 15, the U.S. Commodity Futures Trading Commission (CFTC) said on Friday. The speculator group ...