Key Points Despite a huge valuation boost in 2025, MP Materials stock has a bright future. The company specializes in high-performance magnets, which are needed in several market sectors. The U.S. Department of Defense is the company's biggest shareholder. 10 stocks we like better than MP Materials › MP Materials (NYSE: MP) has had a wild year. After two huge strategic partnerships were unveiled in July -- one with the Department of Defense, the other with Apple -- the stock was set on a steep, st ...