shares of ecolab inc ecl shed 149 to 15044 wednesday on what proved to be an allaround poor trading session for the stock market with the sp 500 index spx falling 061 to 399532 and dow jones industrial average djia falling 042 to 3396635 the stocks fall snapped a fourday winning streak ecolab inc closed 8694 short of its 52week high 23738 which the company reached on january 5th the stock underperformed when compared to some of its competitors wednesday as procter  gamble co pg rose 039