shares of union pacific corp unp inched 003 higher to 19515 tuesday on what proved to be an allaround favorable trading session for the stock market with the sp 500 index spx rising 165 to 391929 and the dow jones industrial average djia rising 106 to 3215540 the stocks rise snapped a sevenday losing streak union pacific corp closed 8379 short of its 52week high 27894 which the company achieved on march 31st trading volume 32 m remained 82827 below its 50day average volume of 33 m