shares of martin marietta materials inc mlm slipped 109 to 34822 friday on what proved to be an allaround poor trading session for the stock market with the sp 500 index spx falling 111 to 385236 and dow jones industrial average djia falling 085 to 3292046 this was the stocks third consecutive day of losses martin marietta materials inc closed 9824 short of its 52week high 44646 which the company achieved on january 4th 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