October 30th was a really good day for shareholders of aggregates and building materials company Martin Marietta Materials (NYSE: MLM ). Shares of the business, as of midday on October 30th, were up 4.3%. This move higher came afterCrude Value Insights offers you an investing service and community focused on oil and natural gas. We focus on cash flow and the companies that generate it, leading to value and growth prospects with real potential.Subscribers get to use a 50+ stock model account, in-depth cash f ...