shares of gilead sciences inc gild shed 145 to 7859 monday on what proved to be an allaround mixed trading session for the stock market with the sp 500 index spx rising 005 to 413812 and the dow jones industrial average djia falling 017 to 3361869 gilead sciences inc closed 1115 short of its 52week high 8974 which the company reached on december 13th