shares of microchip technology inc mchp sank 029 to 7603 thursday on what proved to be an allaround rough trading session for the stock market with the sp 500 index spx falling 072 to 406122 and dow jones industrial average djia falling 086 to 3312774 microchip technology inc closed 1173 below its 52week high 8776 which the company reached on february 3rd 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