Cameco vs. MP Materials: Does Uranium or Rare Earths Make a Better Stock Buy in 2026?

Choosing between Cameco Corp (NYSE:CCJ) and MP Materials Corp (NYSE:MP) means weighing the steady growth of nuclear power against the high-stakes demand for rare earth magnets essential for electric vehicles and defense.

Cameco is a global leader in uranium production, serving as a backbone for the nuclear energy industry. MP Materials focuses on the rare earth supply chain, aiming to provide a Western alternative to Chinese dominance. Both companies provide materials critical to the energy transition, but they offer very different risk and reward profiles for investors.

The case for Cameco

Cameco operates as a vertically integrated nuclear fuel company, handling everything from mining uranium to fabricating fuel for reactors. It serves a diverse base of 39 uranium customers and 33 conversion customers across 16 countries. This global reach makes it a central player in nuclear energy stocks.

In its latest annual report, filed for FY 2025, revenue reached about $2.5 billion, representing growth of approximately 11% over the previous year. This performance resulted in a net income of close to $$421 million. Net margin reached roughly 17%, which is the percentage of revenue remaining after all expenses are paid.

As of its December 2025 balance sheet, the so-called current ratio was roughly 2.5x, showing a healthy ability to cover short-term debts. The debt-to-equity ratio was approximately 0.1x, which compares total debt to shareholder equity and indicates very low leverage. Free cash flow, or cash from operations minus capital expenditures, reached nearly $768 million.

The case for MP Materials

MP Materials is building a domestic supply chain for rare earth magnets essential for electric vehicles and defense. The company maintains a foundational supply agreement with General Motors Corp (NYSE:GM) and recently secured a long-term contract with Apple Inc (NASDAQ:AAPL). Following new strategic partnerships in 2025, the company has ceased all direct sales of its products to China.

For FY 2025, revenue reached approximately $224 million, showing growth of roughly 10% compared to the prior year. However, the company reported a net loss of nearly $86 million. This resulted in a negative net margin of about 38%, indicating the percentage of revenue lost after paying all operational costs.

According to the December 2025 balance sheet, the debt-to-equity ratio was roughly 0.4x, a measure of total debt relative to shareholders' equity. The current ratio was nearly 7.2x, indicating a strong ability to cover short-term liabilities with current assets. Free cash flow was negative by about $328 million, which is the cash remaining after subtracting capital expenditures from operating cash flow.

Risk profile comparison

Cameco faces risks associated with uranium price volatility and the highly regulated nature of the nuclear industry. Geopolitical shifts or safety concerns could impact global demand for nuclear fuel and long-term contracts. Furthermore, the company must manage the complex operational hazards inherent in mining and processing radioactive materials at its global facilities.

MP Materials deals with significant geopolitical risks, as rare earth prices are heavily influenced by production and regulations in China. The company relies almost entirely on its Mountain Pass and Independence facilities, meaning any disruption there could halt operations. It also faces intense competition from established global players like USA Rare Earth Inc (NASDAQ:USAR).

Valuation comparison

Cameco carries a lower P/S ratio than its peer, though both trade at high Forward P/E multiples based on future earnings estimates.

Valuation metrics sourced from Financial Modeling Prep (FMP) and may differ from other data providers.

Which stock would I buy in 2026?

MP Materials is the U.S.'s only fully integrated rare-earth producer. Rare-earth elements and rare-earth concentrate markets are dominated by China. That creates a risk: Chinese production levels and inventory stockpiling could lead to lower prices and adversely impact MP's revenue. But that also provides MP's opportunity: national security and energy security increasingly rely on the usage of rare-earth metals to make things like magnets in EVs and wind turbines more efficient, and for classified usage in munitions. MP owns and operates the Mountain Pass facility, in California. It is one of the world's largest integrated rare-earth mining and processing facilities and the only major rare-earth resource in the Western Hemisphere.

The risk is federal policy changes again and China floods the U.S. market with cheap supply, ruining MP's business model (Mountain Pass had previously shut down after the Great Recession due to just this scenario). Yet that is probably unlikely given the increasing tenor of conflict and confrontation globally. Wall Street sees its revenue doubling in the current fiscal 2026 and just about doubling again in 2027, when analysts project the company's first profit.

Cameco, meanwhile, is an essential North American producer of uranium, which is needed for fueling nuclear power plants.

Nuclear energy provides about one-fifth of the U.S. energy supply, and the federal government has an aggressive timeline to quadruple nuclear energy by 2050. New reactor designs are emerging that should make building plants faster and cheaper, helping the nuclear plant market. It's a heavily regulated market for Cameco, but there is an unexpected risk: Donald Trump's fight with Canada could imperil exports of the precious fuel to the U.S. if things escalate.

Still, Cameco's business is seen as fairly stable, growing modestly (low single-digit growth) in the next few years. If you're a believer in long-term nuclear energy growth, it's one of the best plays in the sector.

A bonus, Cameco last year purchased about half of Westinghouse, which is the dominant designer and builder of nuclear power plants around the world. Considering other countries, namely South Korea, are planning a boom in Westinghouse-designed plants, that's a plus. Westinghouse typically provides maintenance over the long term for its reactor designs, adding a predictable revenue stream.

Both of these stocks are great additions to a long-term portfolio that recognizes the increasing importance of renewable energy in the U.S. energy strategy. Choosing between them right now comes down largely to valuation, yet both are premium-priced by the market.

In such cases, pivot to top-line growth. Assuming rare-earth metal supply remains a U.S. priority, MP is forecast to be a fast revenue grower through the rest of the decade, and therefore is the pick.

Brendan Coffey has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Apple, Cameco, and MP Materials. The Motley Fool recommends General Motors. The Motley Fool has a disclosure policy.