After nearly doubling in value over the last week and closing at a record high Wednesday, shares of MP Materials are sinking premarket Thursday after the rare earths miner announced plans to sell new stock.

Trade Desk (TTD) stock is surging on news that the company will join the S&P 500 (^GSPC), replacing Ansys (ANSS). Robinhood (HOOD) and Applovin (APP) are trading slightly lower after not making the cut to join the index once again.

Shares of USA Rare Earth stock are down 7.1% through 1:55 p.m. ET Wednesday, and the reason is simple: USA Rare Earth is not MP Materials. Not even close.

MP Materials stock surged nearly 8% in premarket trading after Fox Business reported Apple's planned $500 million investment in the rare earths mining company.

U.S. efforts to break China's dominance of the rare earths market and to drive investment in its own industry have moved up a gear with a Washington-backed plan to create a separate, higher pricing system.

Rare-earth firm MP Materials (MP) stock is skyrocketing after the company announced a deal for the US Department of Defense to buy $400 million of company shares. The Pentagon will be the company's largest shareholder as part of the US government's efforts to reduce China's rare earth metal dominance.

Review the current MP Materials Corp Ordinary Shares - Class A (MP:XNYS) growth, profitability and efficiency, financial health, and cash flow key metrics to decide if MP is the best investment ...

Deal will make the US Department of Defense the largest shareholder in MP, the sole domestic producer of rare earth elements.