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Barchart
Aditya Raghunath

Billionaire Gina Rinehart Is Now the Top Investor in MP Materials. Should You Follow the Money and Buy MP Stock Too?

According to a Bloomberg report, Australian mining magnate Gina Rinehart has made a significant bet on American rare earths. Rinehart became the top shareholder in MP Materials (MP) after boosting her stake to 8.4% in Q3 of 2025. The markets responded to the news by sending MP stock up about 9% yesterday, just to fall by almost the same amount during today's trading session.

The mining billionaire, whose net worth is $32.3 billion from iron ore operations in Western Australia, picked up another million shares through her investment firm, Hancock Prospecting. 

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