shares of equity residential eqr shed 172 to 6622 thursday on what proved to be an allaround rough trading session for the stock market with the sp 500 index spx falling 211 to 364047 and dow jones industrial average djia falling 154 to 2922561 equity residential closed 2810 below its 52week high 9432 which the company achieved on april 21st the stock demonstrated a mixed performance when compared to some of its competitors thursday as avalonbay communities inc avb fell 180 to 18150 udr inc udr fell 149 to 4108 and midamerica apartment communities inc maa fell 141 to 15362 trading volume 13 m remained 116013 below its 50day average volume of 14 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