shares of avalonbay communities inc avb slid 117 to 16807 monday on what proved to be an allaround rough trading session for the stock market with the sp 500 index spx falling 154 to 396394 and dow jones industrial average djia falling 145 to 3384946 avalonbay communities inc closed 9098 below its 52week high 25905 which the company achieved on march 29th despite its losses the stock outperformed some of its competitors monday as equity residential eqr fell 211 to 6219 udr inc udr fell 199 to 3992 and midamerica apartment communities inc maa fell 206 to 15813true trading volume 18 m eclipsed its 50day average volume of 858350 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