12 Best Penny Stocks to Invest In According to Billionaires

​7. Plug Power Inc. (NASDAQ:PLUG)

Number of Billionaire Investors: 13

Total Value of Holdings: $280.6 billion

Number of Hedge Fund Holders: 20

Plug Power Inc. (NASDAQ:PLUG) is one of the Best Penny Stocks to Invest In According to Billionaires. Plug Power Inc. (NASDAQ:PLUG) has announced significant developments over the past months, which have resulted in the stock gaining around 10% over the past 6 months.

​Firstly, the company posted results for its fiscal Q1 2026 quarter on May 11. During the quarter, the company reported 22% year-over-year revenue growth to $163.5 million. Although still negative, the gross margins improved sharply from -55% to -13%, driven by cost cuts, better service execution, and more efficient fuel sourcing.

​More recently, on June 24, Plug Power announced completing a major milestone at the Måde Power-to-X facility in Esbjerg, Denmark, operated by European Energy. Management noted that the project involved installing, testing, and handing over a 5 MW GenEco PEM electrolyzer system.

The company’s containerized system design simplified on-site work and sped up the path to production. With this project, Plug Power now has more than 70 GenEco electrolyzer systems running across six continents, giving it a growing base of operating experience to refine design and commissioning.

Plug Power Inc. (NASDAQ:PLUG) is an alternative energy technology firm. It designs, develops, commercializes, and manufactures hydrogen and fuel cell systems for the material handling and stationary power fields.

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