shares of cigna corp ci advanced 149 to 31359 wednesday on what proved to be an allaround mixed trading session for the stock market with the dow jones industrial average djia rising 003 to 3374384 and the sp 500 index spx falling 002 to 401622 this was the stocks second consecutive day of gains cigna corp closed 2652 short of its 52week high 34011 which the company reached on december 13th the stock demonstrated a mixed performance when compared to some of its competitors wednesday as unitedhealth