shares of udr inc udr shed 200 to 4125 thursday on what proved to be an allaround poor trading session for the stock market with the sp 500 index spx falling 185 to 391832 and dow jones industrial average djia falling 166 to 3225486 udr inc closed 1876 below its 52week high 6001 which the company achieved on april 21st the stock underperformed when compared to some of its competitors thursday as avalonbay communities inc avb fell 157 to 17098 equity residential eqr fell 174 to 6086 and midamerica apartment communities inc maa fell 193 to 15291 trading volume 20 m remained 421097 below its 50day average volume of 24 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