美国稀土材料公司MP MATERIALS涨幅一度扩大至16%，此前消息称美国计划将对稀土援引国防生产法案。

Core Viewpoint - MP Materials, a U.S. rare earth materials company, saw its stock surge by as much as 16% following reports that the U.S. plans to invoke the Defense Production Act for rare earths [1] Group 1 - The stock price increase of MP Materials indicates strong market reaction to government policy changes regarding rare earth materials [1] - The invocation of the Defense Production Act suggests a strategic move by the U.S. government to bolster domestic production of critical materials [1]