Research · October 28, 2026

MP Materials: What a Mine-to-Magnet Chain Looks Like When It Starts to Scale

MP Materials (NYSE: MP) owns and operates the Mountain Pass mine in California and is building the downstream chain that turns mined rare earths into separated products and, eventually, finished magnets. Two dated facts frame the story: a July 2025 agreement with the U.S. Department of War (DoW), and second-quarter 2026 results reported on August 6, 2026. This draft reports only what those records show.

The July 2025 DoW package, stated precisely

On July 10, 2025, the DoW agreed to buy $400 million of MP Materials convertible preferred stock and to provide a $150 million loan supporting heavy rare earth separation, including samarium oxide production at Mountain Pass. Together, those two items form a $550 million package — $400 million plus $150 million, not a larger sum assembled from other facilities.

The agreement also included a ten-year price floor of $110 per kilogram for neodymium-praseodymium (NdPr) oxide and a ten-year commitment to buy magnets produced at MP's planned second magnet facility, known as 10X. On conversion and warrant exercise, the DoW would hold about 15 percent of the common shares, making it the company's largest shareholder. The distinction matters: the package is government capital attached to separation capacity and to a price floor, not a purchase of the company's existing magnet output.

What the second quarter of 2026 showed

MP reported second-quarter 2026 results on August 6, 2026, for the three months ended June 30, 2026. Consolidated revenue was $108.5 million, up 89 percent year over year from $57.4 million. Price protection agreement income added $17.6 million, bringing consolidated revenue and price protection income to $126.1 million. The net loss narrowed to $20.3 million from $30.9 million a year earlier, and adjusted EBITDA improved to $28.5 million from a $12.5 million loss.

The operating shift behind those totals is visible in the product mix. NdPr production reached 840 metric tons, up 41 percent year over year, while NdPr sales volume reached 1,006 metric tons, up 127 percent. Revenue from NdPr oxide and metal rose 277 percent to $94.4 million from $25.0 million. At the same time, rare earth concentrate revenue fell to zero: MP ceased concentrate sales beginning in July 2025, and rare earth oxide production in concentrate fell 16 percent to 11,072 metric tons. The company is, in its own reported numbers, selling less raw concentrate and more separated, higher-value material.

By segment, the Materials business generated $95.6 million of revenue, up 155 percent, with $17.6 million of price protection income and $32.5 million of adjusted EBITDA. The Magnetics business generated $16.5 million of revenue, down 17 percent year over year as the Independence facility moved toward commercial magnet production, with $7.5 million of adjusted EBITDA. During the quarter MP also signed a long-term agreement to supply separated gadolinium to a new American aerospace and defense customer, and launched Project Swarm, an initiative to aggregate demand and standardize specifications for the drone industry.

A cleaner maturity profile

One often-misread part of MP's balance sheet is its convertible debt. The 2026 convertible notes matured on April 1, 2026, and were converted upon maturity and settled in full: $67.5 million in cash plus 337,741 shares of common stock for conversion consideration above principal. No 2026 notes remained after that settlement. The remaining convertible issue discussed in the company's filings is the 3.00 percent notes due March 1, 2030, originally issued in March 2024 in the amount of $747.5 million.

As of June 30, 2026, MP held $1,452.6 million of cash and short-term investments, against $934.6 million of long-term debt on the reported balance sheet. That liquidity position, not any single quarter's revenue figure, is what funds the continued build-out of separation and magnet capacity.

What to watch, and what this draft does not claim

Three questions follow directly from the verified record, without forecasting answers. First, whether NdPr sales volumes can keep growing faster than production, as they did in the second quarter, or whether the gap closes. Second, whether the Magnetics segment's revenue decline reverses as Independence moves from qualification deliveries to commercial production. Third, whether the price floor continues to function as reported — $17.6 million of price protection income in one quarter — rather than becoming the main source of reported profit.

This is not investment advice, and it is not a recommendation about MP shares. It is a record of a supply chain moving, step by step, from concentrate toward finished magnets, with the dates and figures stated so a reader can check each one.

Sources (all checked 2026-10-28)