shares of ao smith corp aos slid 014 to 6561 monday on what proved to be an allaround mixed trading session for the stock market with the sp 500 index spx rising 034 to 448646 and the dow jones industrial average djia falling 010 to 3525861 the stocks fall snapped a threeday winning streak ao smith corp closed 820 short of its 52week high 7381 which the company reached on september 3rd the stock underperformed when compared to some of its competitors monday as lennox international inc lii rose 127 to 31311 and bwx technologies inc bwxt rose 021 to 5655 trading volume 710987 remained 213342 below its 50day average volume of 924329 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