shares of boston properties inc bxp slumped 051 to 11531 tuesday on what proved to be an allaround mixed trading session for the stock market with the dow jones industrial average djia rising 026 to 3639821 and the sp 500 index spx falling 010 to 478635 boston properties inc closed 893 short of its 52week high 12424 which the company achieved on june 14th the stock underperformed when compared to some of its competitors tuesday as digital realty trust inc dlr rose 078 to 17486 and vornado realty trust vno fell 002 to 4163 trading volume 468131 remained 265276 below its 50day average volume of 733407 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