shares of medtronic plc mdt shed 136 to 7772 thursday on what proved to be an allaround dismal trading session for the stock market with the sp 500 index spx falling 249 to 389575 and dow jones industrial average djia falling 225 to 3320222 this was the stocks second consecutive day of losses medtronic plc closed 3659 short of its 52week high 11431 which the company reached on april 21st the stock demonstrated a mixed performance when compared to some of its competitors thursday as johnson 