Why MP Materials Stock Just Crashed

MP Materials' government subsidy looks safe. That doesn't change the fact that it remains an expensive stock.Six months ago, MP Materials (MP 9.85%) investors got some excellent news. The U.S. government -- specifically, the Department of Defense -- would invest $400 million in MP Materials preferred convertible stock.More than that, DOD signed a 10-year supply agreement to buy all the rare-earth metals that MP could produce, and gave the company a price guarantee to purchase its neodymium-praseodymium at l ...