This article first appeared on GuruFocus.

Arafura Rare Earths Ltd. (ARAFF) is entering a high-stakes funding phase as Australia's richest person, Gina Rinehart, moves to deepen her exposure to the company's rare earths strategy. The company launched a A$375 million capital raising plan, built around a two-tranche share placement at 26 cents per share to raise A$350 million, plus a stock purchase plan at the same price that could bring in up to A$25 million. The timing matters for investors because the raise comes just one day after Arafura made its final investment decision to develop the Nolans mine in Australia's Northern Territory, a project expected to produce about 5% of global rare earths.

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Rinehart is already Arafura's largest shareholder, with a position of around 15%, and Hancock Prospecting Ltd. has committed to buy A$85 million worth of new stock. That purchase would lift Hancock's stake to around 17.5%, giving Rinehart an even larger position in one of Australia's more closely watched rare earths developments. For investors, the move could be read as another sign of rising conviction around critical minerals supply chains, especially as Arafura has already secured offtake agreements and more than A$1 billion in Australian government financial support, including loans and an equity investment through Export Finance Australia.

The broader context is that Rinehart was an early mover in rare earths and has built the world's largest portfolio of rare-earth element investments outside China, more than 20 years after first making her fortune in steelmaking iron ore. Her exposure also includes stakes in MP Materials Corp. (MP), Lynas Rare Earths Ltd. (LYSDY), and Rare Earths Americas Inc., while Hancock has also expanded into military and defense shares including RTX Corp. (RTX), Northrop Grumman Corp. (NYSE:NOC), L3Harris Technologies Inc. (NYSE:LHX), and Lockheed Martin Corp. (NYSE:LMT), worth a combined $97 million as of March 31. Arafura plans to sell around 20% of its targeted neodymium-praseodymium oxide output on the spot market, which could make pricing exposure an important part of the investment story as the Nolans project moves forward.