shares of kla corp klac dropped 073 to 36482 monday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 015 to 385576 and dow jones industrial average djia falling 028 to 3181914 this was the stocks third consecutive day of losses kla corp closed 6464 short of its 52week high 42946 which the company reached on january 26th