Rinehart becomes the largest shareholder in MP Materials
Rare earths mining US investment Rinehart has moved into a new phase after Gina Rinehart increased her holding in MP Materials. The Hancock Prospecting owner lifted her position to about 8.4% during the third quarter of 2024. This placed the company ahead of founder James Litinsky, who owns close to 7.9%.

Gina Rinehart increased Hancock Prospecting’s stake in MP Materials during the third quarter of 2024
The value of the holding reached about 997 million US dollars by the end of September. Hancock Prospecting bought one million additional shares in the period, strengthening its presence in the American rare earths market.
MP Materials operates the Mountain Pass mine in California. Mountain Pass remains the only large-scale rare earths mine and processing site in the United States. Rinehart’s move came as supply chain security became a central focus for Western countries seeking stable access to critical minerals.
Rising interest in US critical minerals
Rare earths mining, US investment, and Rinehart continued to attract attention due to the timing of the share increase. Earlier in the year, MP Materials received a large equity investment from the United States Department of Defence. The funding supported the development of its processing facilities and broader supply chain plans.

Demand for rare earths continues to grow across the United States’ clean energy sector
Rinehart’s expanded holding aligned with these national projects. The partnership between Australia and the United States in critical minerals continued to grow as demand for secure mineral sources increased.
Hancock Prospecting’s United States-listed securities reached about three billion US dollars during the quarter. The MP Materials holding formed a major part of that portfolio. The higher stake pointed to the company’s interest in long-term exposure to minerals used in advanced technology.
MP Materials’ position in the North American market
Australian billionaire rare earths US investments continued to draw attention to MP Materials. The company produces rare earth concentrate and is building more processing and magnet production capability.

MP Materials works to expand its refining and magnet production capabilities
Mountain Pass supplies materials widely used in electric vehicles, renewable energy equipment and specialised manufacturing. As the United States works to improve local production, investors have continued to follow the company’s progress.
The rare earths market has faced shifts in pricing. MP Materials has recorded periods of lower revenue growth in recent years. Even with these challenges, investors remain engaged due to the company’s central role in the domestic supply chain.
Hancock Prospecting’s broader minerals strategy
Rare earths mining US investment Rinehart forms part of Hancock Prospecting’s broader move into minerals, expected to see higher demand in the coming years. The company has added investments across several commodities, including lithium, copper and rare earths.
Rinehart’s increased holding suggested confidence in the American critical minerals sector. The rise in demand for materials linked to clean energy production has shaped investor interest across global markets.

Hancock Prospecting continues to diversify into minerals with future demand growth
Hancock Prospecting is known for taking positions in assets with long-term potential. The MP Materials investment remains one of the company’s largest in international markets.
Western nations aim to build secure supply chains
Australian billionaire rare earths US investment takes place within growing global efforts to develop reliable supply chains outside major production centres. Governments in Australia, the United States and several European nations have increased their support for rare earths production and processing.

Rinehart’s involvement came as the United States sought to expand magnet manufacturing capacity. The funding provided to Mountain Pass formed part of a strategy to encourage local processing.
Australia and the United States have strengthened cooperation on critical minerals. Rinehart’s decision to increase her stake added private sector support to these ongoing initiatives.
Market conditions and company performance
Rare earths mining US investment Rinehart continues to receive attention as MP Materials moves through varied financial conditions. The company has experienced periods of negative margins and fluctuating earnings in recent years.
The outlook for minerals linked to the clean energy transition continues to guide investment decisions. MP Materials’ valuation reflects expectations for future production and demand rather than short-term performance alone.
Investors remain focused on the Mountain Pass development program. The company has committed to expanding refining and magnet production in order to reduce reliance on offshore processors.
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Future direction and final thoughts
Australian billionaire rare earths US activity has placed Rinehart among the most influential private investors in the American rare earths sector. Her higher stake in MP Materials shows a sustained interest in assets tied to new technology and energy-related industries.
As countries continue to search for stable supplies of critical minerals, private investment plays a central role in supporting development. Rinehart’s increased position demonstrates ongoing confidence in the long-term value of rare earths.Rare earths mining US investment Rinehart continues to shape Australia’s presence in international minerals markets. The enlarged holding in MP Materials reflects long-term interest in a resource that will support emerging industries in the years ahead.








