shares of blackrock inc blk shed 252 to 90461 tuesday on what proved to be an allaround dismal trading session for the stock market with the sp 500 index spx falling 190 to 456700 and dow jones industrial average djia falling 186 to 3448372 blackrock inc closed 6855 short of its 52week high 97316 which the company reached on november 12th the stock demonstrated a mixed performance when compared to some of its competitors tuesday as bank of america corp bac fell 246 to 4447 invesco ltd ivz fell 392 to 2233 and affiliated managers group inc amg fell 282 to 17013 trading volume 991893 eclipsed its 50day average volume of 507883 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