MP Materials (MP) is up 12.2%, or $3.07 to $28.14. Published first on TheFly – the ultimate source for real-time, market-moving breaking financial news. Try Now>> See today’s best-performing stocks on TipRanks >> Read More on MP: MP Materials rises 8.4% Unusually active option classes on open April 16th MP Materials: Navigating Opportunities and Challenges Amidst China’s Export Halt and Tariffs China suspends exports of certain rare earth minerals and magnets, NYT reports MP Materials rises 20.8% Disclaimer & DisclosureReport an Issue