shares of centerpoint energy inc cnp shed 228 to 2782 tuesday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 030 to 397015 and dow jones industrial average djia falling 071 to 3265670 this was the stocks sixth consecutive day of losses centerpoint energy inc closed 568 below its 52week high 3350 which the company achieved on september 23rd the stock demonstrated a mixed performance when compared to some of its competitors tuesday