Realta Investment Advisors Lowers Stock Position in Martin Marietta Materials, Inc. (NYSE:MLM)Ticker Report • about 1 month agoRealta Investment Advisors lowered its position in Martin Marietta Materials, Inc. (NYSE:MLM - Free Report) by 1.3% in the 4th quarter, HoldingsChannel.com reports. The firm owned 4,187 shares of the...