shares of parker hannifin corp ph shed 342 to 27443 tuesday on what proved to be an allaround rough trading session for the stock market with the sp 500 index spx falling 126 to 452512 and dow jones industrial average djia falling 080 to 3464118 parker hannifin corp closed 6557 below its 52week high 34000 which the company achieved on february 3rd the stock underperformed when compared to some of its competitors tuesday as danaher corp dhr fell 065 to 28737 rockwell automation inc rok fell 074 to 27910 and dover corp dov fell 254 to 15392 trading volume 791045 remained 11710 below its 50day average volume of 802755 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