shares of avalonbay communities inc avb shed 006 to 18533 wednesday on what proved to be an allaround rough trading session for the stock market with the sp 500 index spx falling 070 to 446771 and dow jones industrial average djia falling 054 to 3512336 this was the stocks second consecutive day of losses avalonbay communities inc closed 3509 below its 52week high 22042 which the company reached on august 17th the stock demonstrated a mixed performance when compared to some of its competitors wednesday as equity residential eqr rose 006 to 6561 udr inc udr fell 071 to 3941 and midamerica apartment communities inc maa rose 012 to 14578 trading volume 454243 remained 279977 below its 50day average volume of 734220 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