MP vs. IDR: Which Rare Earth Stock is the Smarter Buy Now?

MP Materials (MP) and Idaho Strategic Resources (IDR) both reported robust Q2 2025 revenue growth, highlighting their roles in bolstering U.S. critical mineral capabilities. MP, the leading integrated Western rare earth producer, saw an 84% revenue increase to $57.4M driven by higher production, securing strategic partnerships with Apple and the DoD for domestic magnet supply, despite a Q2 loss and a premium valuation. Conversely, IDR, a gold producer with significant early-stage rare earth exploration assets, achieved record revenues of $9.5M (up 54.7%), though earnings growth was tempered by increased exploration costs; it trades at a lower valuation, offering diversified exposure to both gold and rare earths.

Analysis

MP Materials (MP) and Idaho Strategic Resources (IDR) present distinct investment cases within the strategic U.S. push for domestic rare earth element (REE) supply. MP Materials, as the only scaled and integrated REE producer in the Western Hemisphere, demonstrated strong operational momentum with an 84% year-over-year revenue surge to $57.4 million in Q2, driven by a 119% increase in NdPr production. Despite posting a loss of $0.13 per share due to heavy investment in capacity expansion, its strategic position is fortified by long-term supply agreements with Apple and a public-private partnership with the Department of Defense. This operational maturity and de-risked pipeline command a premium valuation, with the stock trading at a 24.59x forward price-to-sales ratio and analysts forecasting a return to profitability in 2026. Conversely, Idaho Strategic offers a hybrid exposure to producing gold assets and speculative, early-stage REE exploration. It reported record Q2 revenue of $9.5 million, up 55%, but earnings growth was constrained by a 262% increase in exploration costs, which elevated its all-in-sustaining costs for gold. While its REE assets represent the largest land package in the U.S., they remain undeveloped, positioning IDR as a higher-risk, higher-reward play at a lower valuation of 11.05x forward P/S.

Key Decisions for Investors

• Investors seeking direct, de-risked exposure to the U.S. REE supply chain should consider MP Materials, accepting its premium valuation as a trade-off for its established production, strong growth, and strategic contracts with Apple and the DoD.
• For those with a higher risk tolerance, Idaho Strategic Resources offers a unique, diversified play on operational gold production and speculative REE upside at a lower valuation, but this requires patience as its REE projects are still in the exploration phase.
• Closely monitor MP's progress toward its 2026 profitability targets amid high expansion costs, and watch for tangible results from IDR's aggressive 2025 exploration programs to validate its long-term REE potential.