shares of perrigo co plc prgo rose 142 to 3510 wednesday on what proved to be an allaround positive trading session for the stock market with the sp 500 index spx rising 142 to 402781 and the dow jones industrial average djia rising 100 to 3271760 this was the stocks fourth consecutive day of gains perrigo co plc closed 880 short of its 52week high 4390 which the company achieved on august 9th the stock demonstrated a mixed performance when compared to some of its competitors wednesday as johnson