7 Hidden Penny Stocks to Invest In

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6. MannKind Corporation (NASDAQ:MNKD)

Upside Potential as of June 10, 2026: 92.84%

Number of Hedge Fund Holders: 25

On June 1, Wells Fargo lifted the price target on MannKind Corporation (NASDAQ:MNKD) to $11 from $10 and reiterated an Overweight rating. The firm associated this target hike with Afrezza’s approval in pediatric patients, saying that the company’s commercial potential is a “show-me story.”

The FDA approval of Afrezza Inhalation Powder for children and adolescents aged 6 and older with type 1 and type 2 diabetes is strengthened by results from the pivotal INHALE-1 clinical trial. This announcement on May 29 extends Afrezza’s availability beyond adults, now catering to pediatric patients and caregivers as well. No wonder MannKind Corporation (NASDAQ:MNKD) is among the hidden penny stocks to invest in.

During its Q1 2026 earnings call, MannKind Corporation (NASDAQ:MNKD) outlined the potential to receive up to $35 million in development milestones, in addition to a 10% royalty on net sales. What’s even more impressive is the company’s position as the sole manufacturer of Tyvaso DPI under a supply agreement. Highlighting the company’s strengths, CEO Michael Castagna said,

“The company is fundamentally different than it was even a few years ago. We are excited about the near-term milestones that will further advance the company’s evolution.”

MannKind Corporation (NASDAQ:MNKD) is a Connecticut-based biopharmaceutical company that specializes in chronic disease care. Incorporated in 1991, the company provides solutions for serious conditions, such as diabetes, pulmonary hypertension, and fluid overload.

While we acknowledge the potential of MNKD to grow, our conviction lies in the belief that some AI stocks hold greater promise for delivering higher returns and have limited downside risk. If you are looking for an AI stock that is more promising than MNKD and that has 100x upside potential, check out our report about the cheapest AI stock.

Click to continue reading and see the 5 Hidden Penny Stocks to Invest In.

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