shares of westrock co wrk slid 126 to 5028 friday on what proved to be an allaround poor trading session for the stock market with the sp 500 index spx falling 019 to 439134 and dow jones industrial average djia falling 003 to 3474625 westrock co closed 1175 short of its 52week high 6203 which the company achieved on may 17th the stock demonstrated a mixed performance when compared to some of its competitors friday as international paper co ip rose 024 to 5439 packaging corp of america