MP Materials will supply Apple with magnets it produces at a Texas facility, expanding Apple’s U.S. supply chain at a time when President Trump has pressured Apple to do so.

Apple said on Tuesday it would invest $500 million into rare earths mine operator MP Materials , as the iPhone maker seeks to localize its mineral supply chain.

KEY TAKEAWAYS Shares of MP Materials are surging in early trading Tuesday after Apple said it would invest $500 million in the owner of the U.S.’s only operational rare earths mine.The move by the iPhone maker to ramp up its supply chain at home comes days after the Department of Defense took a 15% stake in the Las Vegas-based rare earths