The construction materials sector is riding a wave of public infrastructure spending, but not every company stands to benefit equally. With billions in federal and state funding flowing into roads, bridges, and public works, investors are eyeing three major players: Amrize (NYSE:AMRZ), Vulcan Materials (NYSE:VMC), and Martin Marietta Materials (NYSE:MLM). All three serve the same fundamental markets, but their recent results reveal stark differences in who's actually capturing the opportunity. The Infrastru ...