shares of masco corp mas slid 072 to 4704 thursday on what proved to be an allaround great trading session for the stock market with the sp 500 index spx rising 036 to 410502 and the dow jones industrial average djia rising 001 to 3348529 this was the stocks third consecutive day of losses masco corp closed 1114 below its 52week high 5818 which the company reached on may 27th the stock underperformed when compared to some of its competitors thursday as ppg industries inc ppg fell 063 to