shares of equity residential eqr sank 017 to 6428 wednesday on what proved to be an allaround poor trading session for the stock market with the sp 500 index spx falling 016 to 399105 and dow jones industrial average djia falling 026 to 3304509 this was the stocks fourth consecutive day of losses equity residential closed 3004 short of its 52week high 9432 which the company reached on april 21st the stock underperformed when compared to some of its competitors wednesday as avalonbay communities inc avb rose 041 to 17658 udr inc udr rose 052 to 4408 and midamerica apartment communities inc maa fell 008 to 16479 trading volume 16 m remained 11 million below its 50day average volume of 28 m 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