shares of martin marietta materials inc mlm inched 099 higher to 39916 thursday on what proved to be an allaround mixed trading session for the stock market with the sp 500 index spx rising 088 to 415128 and the dow jones industrial average djia falling 011 to 3276465 martin marietta materials inc closed 1132 below its 52week high 41048 which the company reached on may 19th trading volume 290569 remained 70016 below its 50day average volume of 360585 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