shares of american electric power co inc aep shed 154 to 10134 tuesday on what proved to be an allaround dismal trading session for the stock market with the sp 500 index spx falling 110 to 398616 and dow jones industrial average djia falling 096 to 3179087 american electric power co inc closed 414 short of its 52week high 10548 which the company reached on august 18th the stock underperformed when compared to some of its competitors tuesday as dominion energy inc d fell 152 to 8234 duke energy corp duk fell 139 to 10768 and southern co so fell 140 to 7758 trading volume 18 m remained 712050 below its 50day average volume of 25 m editors note this story was autogenerated by automated insights an automation technology provider using data from dow jones and factset see our market data terms of use