shares of microchip technology inc mchp slid 077 to 7572 tuesday on what proved to be an allaround mixed trading session for the stock market with the dow jones industrial average djia rising 031 to 3373396 and the sp 500 index spx falling 007 to 401695 the stocks fall snapped a twoday winning streak microchip technology inc closed 478 short of its 52week high 8050 which the company achieved on december 13th trading volume 32 m remained 11 million below its 50day average volume of 44