Arqit Quantum Inc. (ARQQ) stock
Close on Nov 12, 2026Market cap $227.24MP/E –Yield –
Arqit Quantum Inc. grew revenue 80.9% to $530.00K over fiscal 2025. Free cash flow was -$29.59M. At the latest close the market valued the company at $227.24M.
Key statistics
Valuation at the latest close; fundamentals over fiscal 2025, balances at Mar 31, 2026
Valuation
- Market cap
- $227.24M
- P/E ratio
- –
- Price to sales
- 428.75
- Price to book
- –
- Dividend yield
- –
- Free cash flow yield
- -13.02%
Fundamentals
- Revenue
- $530.00K
- EPS, diluted
- -$2.56
- Free cash flow
- -$29.59M
Trading
- Previous close
- $15.59
- Open
- $14.78
- Day's range
- $14.55 – $15.47
- Volume
- 244,828
- Average volume (20 days)
- 288,733
- Beta (5 years)
- 2.16
- 52-week range
- $11.52 – $32.72
- RSI (14 days)
- 43.8
- Volatility (1 year)
- 116.6%
- Relative volume
- 0.74×
- WACC
- 15.7%
Market cap history
Month-end market cap since 2021, using shares outstanding reported at the time
Total return vs. the S&P 500
Price change plus reinvested dividends, to the close on Nov 12, 2026. The S&P 500 is measured by the SPY fund.
| Period | ARQQ | S&P 500 | Difference | ARQQ per year | S&P 500 per year |
|---|---|---|---|---|---|
| 1 month | -10.8% | -2.7% | −8.1 pts | ||
| 3 months | -37.4% | -1.7% | −35.6 pts | ||
| Year to date | -32.1% | +11.9% | −44.0 pts | ||
| 1 year | -51.0% | +12.0% | −63.0 pts | ||
| 3 years | +18.7% | +78.2% | −59.5 pts | +5.9% | +21.2% |
| 5 years | -97.4% | +73.2% | −170.6 pts | -51.7% | +11.6% |
Seven years at a glance
Fiscal years 2019 to 2025, USD
Revenue
Operating income
Net income
EPS, diluted
Free cash flow
Press releases
Releases Arqit Quantum filed with the SEC as exhibits to Form 8-K or 6-K
- 6-K
- 6-K
- 6-K
- 6-K
- 6-K
- 6-K
About Arqit Quantum
Services-Prepackaged Software
Arqit Quantum Inc. provides encryption software and cryptographic analysis services designed to protect digital communications against conventional cyber threats and quantum computing capabilities. The company offers Encryption Intelligence, an analytical and advisory service that detects cryptographic vulnerabilities across enterprise infrastructure. Its core protection products include the SKA-Platform, which manages symmetric key generation across networked devices, and NetworkSecure, a software application that integrates with third-party network hardware and virtual private network systems. Arqit serves government agencies, military organizations, telecommunications providers, and commercial enterprises.
Company profile, executives and historyArqit Quantum stock: common questions
What is Arqit Quantum's stock price?
ARQQ closed at $14.86 on Nov 12, 2026, down 4.68% on the day. Over the past 52 weeks it traded between $11.52 and $32.72.
What is Arqit Quantum's market cap?
Arqit Quantum was worth $227.24M at the close on Nov 12, 2026: the share price times the diluted shares outstanding.
What is ARQQ's P/E ratio?
Arqit Quantum lost money over fiscal 2025 (diluted EPS -$2.56), so it has no meaningful P/E ratio.
How much revenue does Arqit Quantum make?
Arqit Quantum reported revenue of $530.00K for fiscal 2025, up 80.9% from a year earlier.
Does Arqit Quantum pay a dividend?
No. Arqit Quantum has not paid a cash dividend over the last twelve months.
How has ARQQ stock performed over the past year?
Including dividends, ARQQ returned -51.0% over the past year, against +12.0% for the S&P 500.
Who are Arqit Quantum's competitors?
Companies most similar to Arqit Quantum by business, industry and size include YAAS, ZPTA, FMTOF, FRSX, SPAI.
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