shares of progressive corp pgr shed 478 to 13506 wednesday on what proved to be an allaround dismal trading session for the stock market with the sp 500 index spx falling 070 to 389193 and dow jones industrial average djia falling 087 to 3187457 progressive corp closed 1144 short of its 52week high 14650 which the company reached on march 6th the stock demonstrated a mixed performance when compared to some of its competitors wednesday as chubb ltd cb fell 341 to 18740 american international