In this article, we will discuss: 13 Best Magnesium Stocks to Invest in Now.

Magnesium is essential to the aerospace, defense, and steel industries, among others, making it a significant component of U.S. national security. It is therefore listed on the 2022 Critical Minerals List by the U.S. Geological Survey.

A significant step toward expanding domestic magnesium manufacturing has been taken by the U.S. technology business Magrathea with the opening of its next-generation magnesium chloride electrolyzer at its pilot facility in Oakland, California. The pilot can produce 4,000 pounds a year, and by 2027, it aims to increase capacity to 2 million pounds, which would be sufficient for operating thousands of Black Hawk helicopters.

Alex Grant, the CEO, stressed the initiative’s urgency by stating that:

“Magnesium is one of the most important critical materials, but NATO countries face a dire shortage of non-China supply.”

Currently, Russia and China account for over 90% of the world’s primary magnesium production, leaving NATO countries vulnerable. Using seawater and renewable energy, Magrathea’s approach produces zero kilograms of CO₂ emissions per kilogram of magnesium, whereas the conventional Chinese methods produce 40 kilograms. The company has signed contracts with over 25 businesses, including 10 defense partners, Cargill, and a major automobile company, proving considerable commercial traction. The U.S. Department of Defense supports it, investors connected to Tesla, and others.

With that said, here are the 13 Best Magnesium Stocks to Invest in Now.

Our Methodology

We sifted through online rankings to form an initial list of the 13 Best Magnesium Stocks to Invest in Now. From the resultant dataset, we chose 13 stocks with the highest number of hedge fund investors, using Insider Monkey’s database of 1000 hedge funds in Q1 2025 to gauge hedge fund sentiment for stocks. We have used the stock’s market cap as of August 14 as a tie-breaker in case two or more stocks have the same number of hedge funds invested.

Why are we interested in the stocks that hedge funds pile into? The reason is simple: our research has shown that we can outperform the market by imitating the top stock picks of the best hedge funds. Our quarterly newsletter’s strategy selects 14 small-cap and large-cap stocks every quarter and has returned 373.4% since May 2014, beating its benchmark by 218 percentage points (see more details here).

13. ICL Group Ltd (NYSE:ICL) 

Number of Hedge Fund Holders: 12

Market Cap as of August 17: $7.98 billion

Evogene Ltd. announced the successful sale of its ag-biologicals subsidiary, Lavie Bio Ltd., to ICL Group Ltd (NYSE:ICL). The acquisition, which was first revealed on April 21, 2025, comprises Lavie Bio’s patented Biology Driven Design technology platform, microbial bank, pipeline of advanced development programs, and current commercial products, as well as the transfer of core individuals to ICL Group Ltd (NYSE:ICL). Evogene also sold off its MicroBoost AI for AG platform, a computational tool that speeds up the creation of microbial products in agriculture. Lavie Bio’s current commercial agreements and partnerships are unaffected by the transaction and continue to provide benefits to its shareholders.

CEO Ofer Haviv underlined the action as a strategic turning point that would multiply the company’s global reach and promote the growth of sustainable agriculture. Dr. Elinor Erez, VP R&D at ICL Group Ltd (NYSE:ICL), noted that bringing together Lavie Bio with ICL Group Ltd (NYSE:ICL)’s R&D, sales network, and agronomy teams boosts ICL Group Ltd (NYSE:ICL)’s innovation pipeline, cementing the company’s position in the global ag-biologicals market and promoting sustainable solutions at scale. It is one of the Best Magnesium Stocks.

12. POSCO Holdings Inc. (NYSE:PKX)

Number of Hedge Fund Holders: 12

Market Cap as of August 17: $16.73 billion

Lithium South Development Corporation declared that it would sell its Sophia 1-3 concessions, Hydra X and XI concessions, and Hombre Muerto North Lithium Project for a maximum cash price of US$62 million. The buyer is POSCO Argentina S.A.U., the Argentine division of POSCO Holdings Inc. (NYSE:PKX), and the deal was completed on July 22, 2025, through a Letter of Intent. It is an arms-length sale with no finder’s fee. The Sal de Oro lithium project in the Hombre Muerto Salar. It is run by POSCO Argentina and POSCO Holdings Inc. (NYSE:PKX), a publicly traded global leader in steel and battery materials, with its headquarters located in Pohang, South Korea.

The purchase brings Lithium South’s lithium concessions under POSCO Argentina, allowing the business to expand strategically in the Hombre Muerto region while also monetizing its holdings. This action supports POSCO Holdings Inc. (NYSE:PKX)’s continued development of lithium resources to support its steel and battery material businesses. It is among the Best Magnesium Stocks.

11. Intrepid Potash, Inc. (NYSE:IPI) 

Number of Hedge Fund Holders: 15

Market Cap as of August 17: $349.31 million

Intrepid Potash, Inc. (NYSE:IPI) released solid second-quarter 2025 results, with overall revenue of $71.5 million and net income of $3.3 million, or $0.25 per diluted share. Adjusted EBITDA came to $16.4 million, over 75% more than Q2 2024, and adjusted net income hit $6.0 million ($0.45 per diluted share). The business ended the quarter in a strong financial position after investing $4.1 million in capital expenditures and generating $39.9 million in cash flow from operations. CEO Kevin Crutchfield credited the outstanding performance to strong unit economics, consistent demand for Trio® and potash, and favorable potash market fundamentals, all of which increased gross margins in both businesses.

The business upheld strong pricing and sales figures, which strengthened its operational performance. Intrepid Potash, Inc. (NYSE:IPI) is confident in maintaining profitability and cash creation for the rest of 2025, as shown by its sustained focus on successful project execution and expectation of ongoing pricing support in the potash market. It is ranked eleventh on the list of the Best Magnesium Stocks.