shares of blackberry ltd bb shed 584 to 484 thursday on what proved to be an allaround dismal trading session for the stock market with the sp 500 index spx falling 079 to 441159 and dow jones industrial average djia falling 107 to 3392226 this was the stocks third consecutive day of losses blackberry ltd closed 236 short of its 52week high 720 which the company reached on august 16th the stock underperformed when compared to some of its competitors thursday as alphabet inc cl a googl fell 135 to 12011 apple inc aapl rose 025 to 19181 and motorola solutions inc msi rose 098 to 29562 editors note this story was autogenerated by automated insights an automation technology provider using data from dow jones and factset see our market data terms of use