MP Materials, the only rare earth miner and processor in the U.S., saw its shares rise over 16% last week due to favorable news amidst a U.S.-China trade standoff. The company announced it would cease shipping rare earth concentrate to China, emphasizing that selling materials under high tariffs is not aligned with national interests, as much of its production serves clients outside China. While the bullish market reaction is notable, investors are cautioned about the volatile nature of the situation and are advised to approach MP Materials stock with caution.