Longbow Research Buying Matin Marietta On Pullback; Upgrades Stock By: Benzinga via Benzinga October 02, 2015 at 10:52 AM EDT Shares of Martin Marietta Materials, Inc. (NYSE: MLM) have risen almost 42 percent year-to-date, reaching a high of $176.51 on ... Read More >> Related Stocks: Martin Marietta Materials