shares of blackrock inc blk slid 225 to 72117 monday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 154 to 396394 and dow jones industrial average djia falling 145 to 3384946 the stocks fall snapped a fourday winning streak blackrock inc closed 21359 below its 52week high 93476 which the company achieved on november 29th the stock underperformed when compared to some of its competitors monday as jpmorgan chase  co jpm fell 175 to 13435 wells fargo  co wfc fell 097 to 4698 and morgan stanley ms fell 112 to 8989 trading volume 480091 remained 418368 below its 50day average volume of 898459 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