shares of csx corp csx shed 021 to 3267 wednesday on what proved to be an allaround poor trading session for the stock market with the sp 500 index spx falling 061 to 399532 and dow jones industrial average djia falling 042 to 3396635 the stocks fall snapped a twoday winning streak csx corp closed 596 below its 52week high 3863 which the company achieved on march 7th the stock underperformed when compared to some of its competitors wednesday as union pacific corp unp fell 020 to 21758