shares of nov inc nov advanced 808 to 1739 friday on what proved to be an allaround rough trading session for the stock market with the sp 500 index spx falling 029 to 439895 and dow jones industrial average djia falling 055 to 3373488 nov inc closed 744 short of its 52week high 2483 which the company reached on january 27th the stock demonstrated a mixed performance when compared to some of its competitors friday as schlumberger ltd slb rose 861 to 5335 baker hughes co bkr rose 478 to 3311 and halliburton co hal rose 779 to 3558 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