shares of martin marietta materials inc mlm shed 059 to 40599 monday on what proved to be an allaround mixed trading session for the stock market with the sp 500 index spx rising 002 to 419263 and the dow jones industrial average djia falling 042 to 3328658 martin marietta materials inc closed 449 below its 52week high 41048 which the company achieved on may 19th trading volume 228594 remained 139309 below its 50day average volume of 367903 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