Quantum Computing Inc. (QUBT) stock price, news and key stats

Price

Last trade as of Sep 16, 2026. Delayed data; not a live quote.

Previous close

$7.85

Open

$7.86

Day range

$7.80 – $8.05

Volume

243K

52-week range

$6.18 – $25.84

Market cap

$1.8B

Forward P/E

-33.8

Beta

3.77

Avg. volume

9.4M

Analyst target

$18.67

Next earnings

Nov 9, 2026

About Quantum Computing Inc.

From the company's latest annual report (Form 10-K).

Latest QUBT news

• Arm co-founder Hermann Hauser’s AI warning: The revolution is real, but so is the bubble risk
  CNBC Tech · Aug 14, 2026

  Hermann Hauser, co-founder of Arm, has issued a cautionary note regarding the rapid advancements in artificial intelligence, emphasizing both the transformative potential of the technology and the risks of an impending bubble. Speaking on CNBC's The Tech Download podcast, Hauser acknowledged that while AI is poised to revolutionize various sectors, the current investment frenzy may lead to unsustainable valuations reminiscent of past tech bubbles. He highlighted the importance of distinguishing between genuine innovation and speculative hype, urging investors to approach the AI market with a discerning eye. Hauser also addressed the challenges faced by European startups in scaling to become tech giants, suggesting that the continent's ecosystem lacks the robust support structures seen in the U.S. and Asia. He pointed to the critical roles of semiconductor advancements and quantum computing in shaping the future landscape of technology. As AI continues to attract significant capital, Hauser's warning serves as a reminder for investors to remain vigilant about the potential for overvaluation, which could lead to significant market corrections if the hype does not translate into sustainable growth.

• Quantum Computing Q2 2026 Earnings Preview
  Seeking Alpha · Aug 9, 2026

  As the quantum computing sector approaches its Q2 2026 earnings reports, analysts are keenly watching key players in the industry for insights into growth trajectories and technological advancements. Companies such as IBM, Google, and Rigetti Computing are expected to report on their progress in scaling quantum systems and commercializing quantum applications, which have been touted as the next frontier in computing power. Market expectations are high, with analysts forecasting a potential surge in revenue driven by increased demand for quantum solutions across various sectors, including finance, pharmaceuticals, and logistics. Investors will be particularly focused on metrics such as revenue growth, research and development expenditures, and partnerships that could signal a competitive edge in the rapidly evolving landscape. The performance of these companies in Q2 2026 may also provide critical indicators of the overall health of the quantum computing market, which has seen significant investment and interest in recent years. Should the earnings reports reflect strong financial results and positive forward guidance, it could bolster investor confidence and lead to increased valuations in the sector. Conversely, any signs of stagnation or unmet expectations may lead to volatility as the market recalibrates its outlook on the future of quantum technology.

• Xanadu Accelerates Chip Production as Investors Await Next Catalyst in Race to Scalable Quantum Computing
  Yahoo Finance · Aug 8, 2026

  Xanadu has announced a significant acceleration in its chip production efforts as the company aims to solidify its position in the competitive landscape of scalable quantum computing. In its latest quarterly update, Xanadu reported advancements in its proprietary photonic chip technology, which is critical for enhancing the performance and scalability of quantum processors. This move comes as investors closely monitor the company's progress, looking for the next catalyst that could propel Xanadu into the forefront of quantum computing innovation. The ramp-up in chip production is expected to have substantial implications for the broader quantum computing market, which is increasingly attracting attention from both venture capitalists and established tech giants. As companies race to develop practical quantum solutions, Xanadu's advancements may position it as a key player, potentially leading to strategic partnerships or increased funding opportunities. Market analysts suggest that successful scaling of production could enhance Xanadu's competitive edge, particularly as demand for quantum computing capabilities grows across various sectors, including finance, pharmaceuticals, and logistics. Investors are keenly awaiting further announcements regarding Xanadu's technological breakthroughs and potential commercial applications, which could serve as the next significant catalyst for the company's stock performance. As the quantum computing landscape evolves, Xanadu's ability to deliver on its production goals will be critical in determining its market valuation and long-term viability.

• Here are the major earnings after the close Friday
  Seeking Alpha · Aug 7, 2026

  Investors are bracing for a series of significant earnings reports set to be released after the market close on Friday. Among the companies expected to report are Quantum Computing (QUBT), Cineverse Corp. (CNVS), Beam Global (BEEM), Flexible Solutions International (FSI), and Dragonfly Energy Holdings Corp. These earnings announcements come at a critical time as market participants seek insights into the financial health and growth prospects of these firms amid ongoing economic uncertainties. The performance of these companies could have notable implications for their respective sectors. For instance, Quantum Computing is at the forefront of technological innovation, and its earnings report may provide clues about the viability of its business model and the broader market for advanced computing technologies. Similarly, companies like Beam Global, which operates in the renewable energy sector, may influence investor sentiment regarding sustainability investments, especially as global energy policies continue to evolve. As earnings season progresses, analysts will be closely monitoring these reports for any signs of revenue growth or potential challenges. The outcomes could impact stock prices and overall market sentiment, particularly in sectors that are sensitive to economic cycles. Investors are advised to stay alert for these announcements, as they may offer critical insights into market trends and investment opportunities.

• D-Wave leads quantum stocks higher as AT&T expands computing deal
  Yahoo Finance · Jul 27, 2026

  D-Wave Quantum (QBTS) experienced a notable surge in its stock price, rising between 11% and 13% in early trading on Monday, following the announcement of an expanded partnership with telecommunications giant AT&T. The agreement will see AT&T enhance its network operations by integrating D-Wave's quantum computing technology, specifically targeting optimization challenges within its AI-powered infrastructure. Although the financial specifics of the deal remain undisclosed, analysts view this collaboration as a significant endorsement of D-Wave's Quantum Computing as a Service (QCaaS) model. This development not only bolsters D-Wave's position in the burgeoning quantum computing sector but also has broader implications for the market. As companies increasingly seek advanced solutions to complex problems, the validation of quantum technology by a major player like AT&T could stimulate further investment and interest in the sector. With earnings reports for quantum computing stocks anticipated in early August, D-Wave's partnership may set a positive tone for the upcoming financial disclosures, potentially influencing investor sentiment across the industry.

• IonQ Tumbles 8%, D-Wave, Rigetti, Quantum Computing Drop 6% as Risk-Off Ripple Effects Hit Speculative Quantum Stocks
  Risk & Volatility · Jul 13, 2026

  Shares of IonQ (NYSE: IONQ) fell by 8% on Friday, trading at approximately $52.50, as broader market concerns triggered a sell-off in speculative quantum computing stocks. D-Wave Quantum Inc. (NYSE: QBTS) and Rigetti Computing (NYSE: RGTI) also experienced significant declines, each down 6%. This downturn comes amidst rising tensions in the Strait of Hormuz and an increase in oil prices, which have led to a general risk-off sentiment among investors. The quantum computing sector, often characterized by high volatility and speculative trading, is particularly sensitive to macroeconomic factors. The simultaneous drop in these stocks suggests that investors are reevaluating their risk exposure in light of geopolitical uncertainties and inflationary pressures. The market's reaction is indicative of a broader trend where speculative assets are being sold off as investors seek safer havens. As the sector grapples with these challenges, the timing coincides with Nvidia's Quantum Day event, which aims to showcase advancements in quantum technology. However, the negative market sentiment may overshadow potential positive developments, raising questions about the future trajectory of these companies in a rapidly evolving technological landscape. Investors will be closely monitoring how these firms navigate the current environment and whether they can regain momentum in the face of external pressures.

• Bitcoin Has Two Ticking Time Bombs, Ex-Meta and Google Engineer Warns
  Crypto News · Jul 12, 2026

  Patrick Shyu, a former engineer at Meta and Google, has raised alarms about two significant threats to Bitcoin's future: the potential impact of quantum computing and the diminishing incentives for miners. In a recent commentary, Shyu, who has publicly stated he sold all his Bitcoin holdings after incurring substantial losses, emphasized that these issues could undermine the cryptocurrency's foundational structure and long-term viability. Quantum computing poses a unique risk to Bitcoin, as advancements in this technology could potentially break the cryptographic security that underpins the network. This could lead to vulnerabilities that allow malicious actors to manipulate transactions or compromise user wallets. Meanwhile, Shyu highlighted the decreasing miner incentives, as the rewards for mining Bitcoin diminish over time, potentially leading to a less secure network if miners are unable to sustain their operations profitably. The implications of these warnings are significant for the cryptocurrency market. If Bitcoin's security is perceived to be at risk due to quantum computing or if miner participation declines, investor confidence could wane, leading to increased volatility in Bitcoin's price. As the market grapples with these structural challenges, stakeholders will need to consider the long-term sustainability of Bitcoin and the broader implications for the cryptocurrency ecosystem.

• IonQ vs. Quantum Computing Inc.: Which Quantum Computing Stock Is a Better Buy in 2026?
  Yahoo Finance · Jul 3, 2026

  As the quantum computing sector continues to evolve, investors are closely examining two prominent players: IonQ and Quantum Computing Inc. (QCI). IonQ, a leader in trapped ion quantum computing, has gained significant attention for its robust technology and partnerships with major corporations, including Google and Microsoft. With a market capitalization of approximately $2 billion, IonQ has positioned itself as a frontrunner in the race to commercialize quantum computing, boasting a strong pipeline of applications across various industries. On the other hand, Quantum Computing Inc. focuses on software solutions and quantum algorithms, aiming to make quantum computing accessible to a broader audience. With a market cap of around $200 million, QCI's strategy emphasizes the development of practical applications that can be integrated into existing systems. While QCI's niche approach may appeal to investors looking for innovative software solutions, its smaller market presence raises concerns about scalability and competition against larger firms like IonQ. Market analysts suggest that IonQ's established technology and strategic partnerships may provide a competitive edge, potentially leading to greater revenue growth and investor confidence. However, QCI's focus on software could attract investors interested in the long-term potential of quantum applications. As the quantum computing landscape matures, both companies present unique investment opportunities, but IonQ's current momentum and market position may make it the more attractive option for investors looking to capitalize on the sector's growth by 2026.

• Quantum Threat to Crypto Is Not Here Yet, but Coinbase Advisory Board Says the Time to Prepare Is Now
  Crypto News · Jun 13, 2026

  The Coinbase Independent Advisory Board on Quantum Computing and Blockchain has issued a significant position paper warning that while the immediate threat of quantum computing to cryptocurrencies is not yet realized, the industry must begin preparations. The 50-page document outlines the potential vulnerabilities that quantum computing could introduce to current cryptographic systems, which underpin the security of blockchain technologies. The advisory board emphasizes that proactive measures are essential to safeguard against future risks, particularly as quantum technology advances. The paper suggests that crypto developers should initiate post-quantum migration strategies to ensure the resilience of digital currencies against quantum attacks. It highlights the need for a comprehensive plan to address unresolved issues related to abandoned and vulnerable cryptocurrencies, which could pose significant challenges for established assets like Bitcoin. As the crypto market continues to evolve, the implications of quantum computing could reshape investor confidence and regulatory frameworks, making it imperative for stakeholders to stay ahead of technological advancements.

• Quantinuum Stock Falls After Uninspiring Quantum IPO Debut. What Went Wrong?
  IPO & M&A · Jun 5, 2026

  Quantinuum, a leading quantum computing company, has priced its initial public offering (IPO) at $60 per share, positioning itself to raise significant capital as it prepares to go public on Thursday. The IPO is expected to attract considerable interest from investors, given the growing demand for quantum technologies across various sectors, including finance, pharmaceuticals, and cybersecurity. With this pricing, Quantinuum aims to capitalize on the burgeoning market for quantum computing, which is projected to expand rapidly in the coming years. The successful pricing of the IPO indicates strong investor confidence in Quantinuum's growth potential and technological advancements. The company, formed from the merger of Honeywell Quantum Solutions and Cambridge Quantum Computing, is well-positioned to leverage its expertise in quantum algorithms and hardware. Market analysts suggest that the IPO could set a precedent for other tech companies in the quantum space, potentially leading to a wave of similar offerings as the industry matures. As the stock begins trading, investors will be closely monitoring its performance, which could influence broader market sentiment towards technology and innovation-focused companies.

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Earnings history