MP Materials said on Wednesday it would sell $500 million of its common stock, a day after the U.S. rare earths miner inked a supply deal with Apple .

MP Materials launched a $500M public offering of common stock, and expects to grant a 30-day underwriters option to purchase up to an additional 15% of shares to be sold in the offering.

MP Materials Corp. (NYSE: MP) (“MP Materials” or the “Company”) announced today the pricing of an upsized underwritten public offering of common stock. The Company is selling 11,818,181 shares of common stock in the Offering at a public offering price of $55.

In a decisive action to bolster the U.S. supply chain for rare earth magnets—essential elements for fighter jets, missiles, and electric vehicles—the

TSMC shares rose 4% in premarket trade as the contract chip manufacturer lifted its 2025 sales guidance. Sarepta Therapeutics stock jumped 34% as the company set plans to lay off more than a third of its workforce following two patient deaths.

MP Materials shares are trading lower in after-hours Wednesday after the company announced a proposed public offering.

MP Materials has a large amount of cash at hand and strong demand for rare earth magnets, with new partnerships announced. Read why I'm rating MP stock a buy.

MP Materials, which has the only operational rare earths mine in the U.S., has drawn interest as a challenger to China's dominance from investors ranging from the Pentagon to tech giant Apple in recent days.