shares of diamondback energy inc fang slipped 467 to 12610 wednesday on what proved to be an allaround rough trading session for the stock market with the sp 500 index spx falling 013 to 375989 and dow jones industrial average djia falling 015 to 3048313 diamondback energy inc closed 3614 below its 52week high 16224 which the company reached on june 8th the stock demonstrated a mixed performance when compared to some of its competitors wednesday as pioneer natural resources co pxd fell 368 to 22881 occidental petroleum corp oxy fell 363 to 5577 and concho resources inc cxo fell 602 to 6560 trading volume 48 m eclipsed its 50day average volume of 28 m editors note this story was autogenerated by automated insights an automation technology provider using data from dow jones and factset see our market data terms of use