shares of diamondback energy inc fang slid 318 to 12486 tuesday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 064 to 410990 and dow jones industrial average djia falling 101 to 3301214 diamondback energy inc closed 4409 short of its 52week high 16895 which the company achieved on november 15th the stock demonstrated a mixed performance when compared to some of its competitors tuesday as eog resources inc eog fell 333 to 10763 pioneer natural resources co pxd fell 271 to 20118 and devon energy corp dvn fell 331 to 4613 trading volume 16 m remained 697471 below its 50day average volume of 23 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