shares of gilead sciences inc gild inched 071 higher to 8394 tuesday on what proved to be an allaround great trading session for the stock market with the sp 500 index spx rising 146 to 407660 and the dow jones industrial average djia rising 109 to 3408604 gilead sciences inc closed 580 below its 52week high 8974 which the company achieved on december 13th the stock demonstrated a mixed performance when compared to some of its competitors tuesday as johnson  johnson jnj rose 088 to 16342