shares of union pacific corp unp rallied 128 to 19909 wednesday on what proved to be an allaround positive trading session for the stock market with the sp 500 index spx rising 142 to 402781 and the dow jones industrial average djia rising 100 to 3271760 this was the stocks fifth consecutive day of gains union pacific corp closed 7985 short of its 52week high 27894 which the company reached on march 31st trading volume 32 m remained 754521 below its 50day average volume of 39 m