shares of diamondback energy inc fang advanced 287 to 14462 wednesday on what proved to be an allaround mixed trading session for the stock market with the dow jones industrial average djia rising 002 to 3266184 and the sp 500 index spx falling 047 to 395139 diamondback energy inc closed 2433 below its 52week high 16895 which the company reached on november 15th the stock demonstrated a mixed performance when compared to some of its competitors wednesday as eog resources inc eog rose 442 to