shares of charles schwab corp schw sank 065 to 7741 wednesday on what proved to be an allaround mixed trading session for the stock market with the dow jones industrial average djia rising 002 to 3266184 and the sp 500 index spx falling 047 to 395139 charles schwab corp closed 1575 short of its 52week high 9316 which the company achieved on march 29th the stock demonstrated a mixed performance when compared to some of its competitors wednesday as blackstone inc bx fell 112 to 8978 morgan