Quantum Computing Inc. (QUBT) stock
Close on Nov 11, 2026Market cap $1.40BP/E –Yield –
Quantum Computing Inc. grew revenue 3368.9% to $18.94M over the twelve months to Sep 30, 2026. Free cash flow was -$61.11M. At the latest close the market valued the company at $1.40B.
Key statistics
Valuation at the latest close; fundamentals over the trailing twelve months, balances at Sep 30, 2026
Valuation
- Market cap
- $1.40B
- P/E ratio
- –
- Price to sales
- 73.74
- Price to book
- 0.88
- Dividend yield
- –
- Free cash flow yield
- -4.38%
Fundamentals
- Revenue
- $18.94M
- Net income
- -$32.50M
- EPS, diluted
- -$0.11
- Free cash flow
- -$61.11M
- Book value per share
- $7.01
- Diluted shares
- 225M
Trading
- Next earnings
- Mar 1, 2027 (estimated, after the close)
- Previous close
- $6.30
- Open
- $6.57
- Day's range
- $6.10 – $6.57
- Volume
- 7,487,040
- Average volume (20 days)
- 7,433,939
- Index membership
- Russell 2000 (since Jun 2025), Russell 3000 (since Aug 2025)
- Beta (5 years)
- 2.28
- 52-week range
- $5.39 – $14.45
- RSI (14 days)
- 41.9
- Volatility (1 year)
- 89.7%
- Relative volume
- 0.96×
- WACC
- 16.3%
On 2 of our idea lists: More cash than they're worth, Most shorted (a warning list)
Index membership is inferred from the holdings of funds that track each index (IWM, IWV), as reported to the SEC for Jun 30, 2026. Join dates come from quarterly fund reports since 2019, so they are accurate to the quarter.
Market cap history
Month-end market cap since 2018, using shares outstanding reported at the time
Total return vs. the S&P 500
Price change plus reinvested dividends, to the close on Nov 11, 2026. The S&P 500 is measured by the SPY fund.
| Period | QUBT | S&P 500 | Difference | QUBT per year | S&P 500 per year |
|---|---|---|---|---|---|
| 1 month | -17.1% | -2.4% | −14.7 pts | ||
| 3 months | -31.1% | -1.2% | −29.9 pts | ||
| Year to date | -39.9% | +12.3% | −52.2 pts | ||
| 1 year | -48.3% | +12.4% | −60.8 pts | ||
| 3 years | +769.0% | +78.8% | +690.2 pts | +105.6% | +21.4% |
| 5 years | -6.1% | +75.2% | −81.3 pts | -1.2% | +11.9% |
| 10 years | +2985.0% | +311.1% | +2673.9 pts | +40.9% | +15.2% |
Nine years at a glance
Fiscal years 2017 to 2025 and trailing twelve months, USD
Revenue
Gross profit
Operating income
Net income
EPS, diluted
Free cash flow
Press releases
Releases Quantum Computing filed with the SEC as exhibits to Form 8-K or 6-K
- Update
- Results
- News
- Update
- Update
- Results
About Quantum Computing
Services-Prepackaged Software
Quantum Computing Inc. develops integrated photonics and quantum optics technology for computing, artificial intelligence, remote sensing, imaging, and cybersecurity. Its primary products include the Dirac series of room-temperature Entropy Quantum Computers, which address complex optimization problems, and reservoir computing machines such as Emucore and Neurawave for neural network calculations. The company also produces optical integrated circuits using thin film lithium niobate, remote sensing systems including LiDAR and quantum photonic vibrometers, and quantum authentication platforms for network security. Additionally, it provides custom photonic chip foundry services, photonic semiconductors, and design, testing, and consulting services. Its customers include organizations across aerospace and defense, sensing and instrumentation, and optical communications.
Company profile, executives and historyQuantum Computing stock: common questions
What is Quantum Computing's stock price?
QUBT closed at $6.17 on Nov 11, 2026, down 2.06% on the day. Over the past 52 weeks it traded between $5.39 and $14.45.
What is Quantum Computing's market cap?
Quantum Computing was worth $1.40B at the close on Nov 11, 2026: the share price times the diluted shares outstanding.
What is QUBT's P/E ratio?
Quantum Computing lost money over fiscal 2025 (diluted EPS -$0.11), so it has no meaningful P/E ratio.
How much revenue does Quantum Computing make?
Quantum Computing reported revenue of $18.94M for the twelve months to Sep 30, 2026, up 3368.9% from a year earlier.
Does Quantum Computing pay a dividend?
No. Quantum Computing has not paid a cash dividend over the last twelve months.
When does Quantum Computing report earnings next?
Quantum Computing is expected to report Q4 FY2026 results on Mar 1, 2027, after the close. The date is estimated from its past reporting pattern until the company confirms it.
How has QUBT stock performed over the past year?
Including dividends, QUBT returned -48.3% over the past year, against +12.4% for the S&P 500.
How many QUBT shares are sold short?
69M shares were sold short at the latest FINRA report, 34.56% of the float, or 11.8 days of average trading volume.
Who are Quantum Computing's competitors?
Companies most similar to Quantum Computing by business, industry and size include PDYN, QBTS, RGTI, ZPTA, AITX.
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