Quantum computing stocks have become highly volatile in the past few months, often rising by double digits in a day and then plunging on the following day.
Analysts have a mixed opinion on the industry, with some expecting it to keep growing. Other analysts believe that the quantum computing industry is still in its infancy and has more room to grow.
The global quantum computing market size is estimated to range between $1.4 billion and $2.1 billion this year. The market is then expected to experience double-digit growth by 2030, with some analysts estimating it to get to over $6 billion.
This article explores the top quantum computing stocks to buy for big gains. However, most of these companies are still in their early days and will experience high volatility.
Alphabet (GOOG)
Alphabet, the parent company of Google and YouTube, is one of the top quantum computing players in the industry. While its quantum computing business is negligible, the company has made progress in the past few years.
The main component of this business is the Willow chip, a state-of-the-art semiconductor unveiled in July last year. Willow made some major breakthroughs, especially in reducing errors and its performance.
In error reduction, the chip cracked a key challenge that researchers have battled with in the last 30 years. The product was also able to solve a mathematical calculation in under five seconds. Today’s fastest supercomputers would solve the calculation in over 10 septillion years.
Alphabet is less speculative than other quantum computing stocks in this list. Also, it will not make money in this industry in the near term. Instead, investing in Alphabet is a bet that its core search business and YouTube will continue doing well over time.
IonQ (IONQ)
IonQ is another top quantum stock to buy for big gains. Its stock has already surged to $40.85, up by 557% from its lowest level in 2024. It has also jumped by 126% from the lowest point this year, giving it a market capitalization of over $10 billion.
Analysts are optimistic that IonQ’s business will continue doing well. The average estimate is that its annual revenue will jump by 95% this year to $84 million, followed by 96% next year to $165 million.
The main issue with IonQ is that its business has become highly overvalued, with its market capitalization being at $10 billion. This means that it trades at 60x 2026 sales, which is huge.
Read more: IonQ stock’s 45% rally on Thursday may have turned it into a ticking time bomb
Quantum Computing Inc (QUBT)
Quantum Computing Inc.. is another company in the industry that makes integrated photonics and quantum optics. It recently made headlines when it was revealed that it would join the Russell 2000 and Russell 30000.
Like IonQ, the biggest risk facing QUBT is that it is a highly overvalued company that made just $39,000 in revenues last quarter. Analysts see its annual revenue rising to $500k this year and $1.5 million in the next one. These are tiny numbers for a company valued at $2.47 billion.
Rigetti Computing (RGTI)
Rigetti Computing is a company that focuses on integrating classical systems and quantum computing for industries like AI and finance. It has a market capitalization of over $3.6 billion.
Rigetti Computing has a key product known as Quantum Cloud Services (QCS), which provides a cloud-based access to quantum computers, enabling developers to write and test algorithms.
While Rigettin Computing is also seen as a good quantum computing stock to buy, there is a risk that it is highly overvalued since its annual revenue is expected to be $8.63 million and $23 million this year and in 2026.
Read more: Deep dive: Why Rigetti Computing’s Q1 EPS isn’t as impressive beneath the surface
The bottom line
Many pure-play quantum computing stocks have become highly overvalued this year. This exposes them to potential pullback and dilution as the companies use the share prices to raise cash. Therefore, analysts recommend focusing on companies like NVIDIA, Amazon, Google, and Microsoft that have solid businesses and are working on quantum computing.
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