shares of american electric power co inc aep slipped 313 to 8250 thursday on what proved to be an allaround mixed trading session for the stock market with the sp 500 index spx rising 088 to 415128 and the dow jones industrial average djia falling 011 to 3276465 this was the stocks ninth consecutive day of losses american electric power co inc closed 2310 short of its 52week high 10560 which the company achieved on september 12th the stock underperformed when compared to some of its competitors thursday as nextera energy inc nee fell 114 to 7339 duke energy corp duk fell 141 to 8889 and southern co so fell 145 to 6982 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