In this article, we will discuss the 10 Most Overvalued Quantum Computing Stocks According to Short Sellers.
The next tech winner may already be trading in plain sight, but investors chasing the quantum computing boom face a critical question: are they buying the future of computing or the next speculative bubble?
Quantum computing has quickly become one of Wall Street’s most exciting, yet controversial, investment themes. While the technology promises to revolutionize artificial intelligence, drug discovery, cybersecurity, financial modeling, and advanced manufacturing, many publicly traded quantum companies have surged far ahead of their current revenues, sparking debate among billionaire investors and hedge fund managers. Some see a once-in-a-generation opportunity; others see valuations that have become detached from reality.
Legendary hedge fund manager Stanley Druckenmiller has repeatedly argued that transformational technologies can create enormous wealth for investors willing to identify long-term winners early. Similarly, Ray Dalio has emphasized that technological revolutions often produce extraordinary opportunities, but also speculative excess as investors rush into emerging industries.
The long-term potential remains difficult to ignore. According to McKinsey & Company, quantum computing could create up to $1.3 trillion in economic value by 2035 across industries ranging from pharmaceuticals to logistics. Meanwhile, the Boston Consulting Group estimates that quantum technologies could unlock between $450 billion and $850 billion in economic benefits over the next 15 to 30 years. Industry research also projects global quantum-computing spending to grow at double-digit annual rates throughout the coming decade.
With this context in mind, here are some overvalued quantum computing stocks according to short sellers.
Our Methodology
We used stock screeners to identify stocks related to quantum computing that have a forward P/E of over 25 and a short percentage of shares outstanding of less than 4%. We limited our final selection to companies that have recently reported noteworthy developments likely to impact investor sentiment. These stocks are also popular among analysts and elite hedge funds. To make the list easier to navigate, we ranked the stocks in descending order of their short percentage of shares outstanding as of May 15, 2026.
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. Insider Monkey’s quarterly newsletter strategy selects 14 small-cap and large-cap stocks every quarter and has returned 599.2% since May 2014, beating its benchmark by 372 percentage points (see more details here).
10 Most Overvalued Quantum Computing Stocks According to Short Sellers
10. Allient Inc. (NASDAQ:ALNT)
Short Percentage of Shares Outstanding: 4.34%
Forward P/E: 30.95
On May 26, JPMorgan upgraded Allient Inc. (NASDAQ:ALNT) to Overweight from Neutral and raised its price target to $80 from $65. The firm noted that the company has successfully transformed itself from a fragmented motion component supplier into a vertically integrated engineering platform that combines motion, control, and power technologies. JPMorgan believes Allient offers an attractive combination of mid-single-digit long-term revenue growth, ongoing margin expansion opportunities, and strong positioning in several high-growth secular markets, including defense, industrial automation, and humanoid robotics. The analyst highlighted the company’s evolving business model and diversified technology portfolio as key drivers of future value creation.
On May 11, Allient Inc. (NASDAQ:ALNT) announced that its Board of Directors elected Alex Collichio as Vice President while he continues to serve as Chief Administrative Officer. Collichio joined the company in July 2022 as Corporate Human Resources Director, later assumed responsibility for the Legal Department in March 2023, and was promoted to Chief Administrative Officer in March 2024. The appointment reflects Allient’s continued focus on strengthening its leadership team and supporting the execution of its long-term strategic initiatives as the company expands its capabilities across multiple technology-driven end markets.
Formerly known as Allied Motion Technologies, Allient Inc. (NASDAQ:ALNT) was founded in 1939 and is headquartered in Amherst, New York. It engineers precision motion, control, and power systems for various technology sectors, including specialized nano-positioning components utilized in the semiconductor industry and quantum computing research to achieve microscopic, high-accuracy equipment alignment.
9. Marvell Technology, Inc. (NASDAQ:MRVL)
Short Percentage of Shares Outstanding: 4.03%
Forward P/E: 50.44
On May 28, B. Riley raised its price target on Marvell Technology, Inc. (NASDAQ:MRVL) to $240 from $205 while maintaining a Buy rating on the shares. The firm highlighted that the company delivered results that exceeded expectations, accompanied by stronger-than-anticipated guidance. According to the analyst, performance was driven by strength in interconnected products, accelerating data center bookings, and upward revisions to revenue forecasts for fiscal 2027 and 2028. Management also pointed to continued momentum among hyperscale customers, expanding custom compute opportunities, and the potential for earnings per share to exceed $6 in fiscal 2028 and $7.50 in fiscal 2029, reflecting growing confidence in the company’s long-term growth trajectory.
On the same day, Oppenheimer analyst Rick Schafer raised the firm’s price target on Marvell Technology, Inc. (NASDAQ:MRVL) to $250 from $200 and reiterated an Outperform rating on the stock. The firm noted that Marvell reported upside results for the first quarter and provided a stronger outlook for the second quarter, primarily driven by demand for AI application-specific integrated circuits and networking solutions. Oppenheimer subsequently increased its financial estimates and indicated that it continues to view the company’s revenue targets as conservative relative to the opportunities emerging from the rapid expansion of AI infrastructure spending.
Incorporated in 1995 and headquartered in Santa Clara, California, Marvell Technology, Inc. (NASDAQ:MRVL) is a fabless semiconductor company that designs custom data infrastructure chips, specializing in artificial intelligence (AI), cloud computing, networking, and storage solutions. The company is expanding through key strategic partnerships and the development of optical interconnects designed to link emerging quantum and high-performance computer architectures.
