shares of ao smith corp aos shed 145 to 6721 tuesday on what proved to be an allaround dismal 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 ao smith corp closed 466 below its 52week high 7187 which the company achieved on february 2nd trading volume 753643 remained 380339 below its 50day average volume of 11 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