Key Points MP Materials is a rare earth miner specializing in the production of high-performance magnets. The company has partnered with the Department of Defense and Apple. 10 stocks we like better than MP Materials › Right now, in your phone or laptop, a high-performance magnet is doing essential work. It enables your speakers to convert electric signals into sound (and vice versa), to align charging coils properly, and even make that little vibration when your phone buzzes with a text. These m ...