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NASDAQ · Software - Infrastructure · USD

Arqit Quantum Inc. (ARQQ) Stock Analysis

Arqit Quantum Inc. (ARQQ) is a Software - Infrastructure stock listed on NASDAQ and quoted in US Dollar.

Last Updated: October 21, 2026

ARQQ

$16.40

+$1.09 (+7.12%)

Oct 21, 2026 · Market close

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Price History

Hover for the daily close. The dotted line marks the period open.

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ARQQ Key Statistics

As of Oct 21, 2026
Trading
Open
$15.45
Previous Close
$15.31
Day's Range
15.36–16.73
52-Week Range
11.52–49.33
Volume
263.88K
BetaHow much the share price moves relative to the wider market. 1.0 moves in line with it; above 1.0 swings more, below 1.0 less.
2.79
Valuation
Market Cap
$285.40M
P/E Ratio
unprofitable
P/S ratioMarket value divided by annual revenue. Useful for companies that are not yet profitable, where a P/E cannot be calculated.
262.80
EPS (ttm)Profit attributable to each share over the last twelve months.
−3.21
Financials (FY)
Revenue (FY)
$530.00K+80.89%
Net Income (FY)
−$35.34M
Shares OutstandingThe total number of shares held by all investors. Market value is this figure multiplied by the share price.
17.40M
1-Year Return
−57.46%
Dividend and dates
Avg Volume
325.37K

Only metrics the company reports are shown. Data provided by Yahoo Finance via yfinance. Updated daily.

Key facts

As of October 21, 2026, ARQQ closed at $16.40, −57.46% over 1 year.

Arqit Quantum Inc. (ARQQ) has a market capitalization of $285.40M.

In fiscal 2025, ARQQ reported revenue of $530.00K.

ARQQ Stock Return by Calendar Year

Arqit Quantum Inc. (ARQQ) return since Apr 2021: what $10,000 became

1 year
$10,000 $4,254
−57.46%
5 years
$10,000 $393
−96.07%
Since Apr 2021
$10,000 $683
−93.17%

If you had invested $10,000 in Arqit Quantum Inc. (ARQQ) at the close on April 1, 2021, the earliest close on record here, it would have been worth $683 at the close on October 21, 2026: −93.17% in total, −38.31% a year, over a partial period shorter than 10 years. A historical calculation from closing prices adjusted for splits and dividends, before fees and taxes.

Calendar-year returns computed from daily closing prices. Partial years are shown muted and marked with an asterisk.

YearReturn
2026 (partial year)−25.05%
2025−43.67%
2024+227.76%
2023−86.87%
2022−84.93%
2021 (partial year)+149.48%

As of October 21, 2026.

ARQQ Revenue and Earnings by Fiscal Year

FY ends September
Fiscal yearRevenueNet incomeNet margin
2025$530.00K−$35.34M−6,668.5%
2024$293.00K−$56.82M−19,391.8%
2023$640.00K−$74.53M−11,644.8%
2022$7.21M$65.08M902.3%
Fiscal yearRevenueGross profitOperating incomeNet incomeNet margin
2025$530.00K—−$35.17M−$35.34M−6,668.5%
2024$293.00K—−$37.37M−$56.82M−19,391.8%
2023$640.00K—−$67.46M−$74.53M−11,644.8%
2022$7.21M—−$50.23M$65.08M902.3%

Annual figures as reported, in the company's reporting currency. As of September 30, 2025.

ARQQ Valuation vs Software - Infrastructure Median

Median of 182 stocks
MetricARQQSoftware - Infrastructure medianvs median
P/S ratio262.803.2780.4x the median

Medians across 182 Software - Infrastructure stocks that report the metric. Medians, not averages, so one outlier cannot move them. As of October 21, 2026.

Recent News

All 9 articles ↓

News provided by third-party sources. Not financial advice.

Analysis

Data-derived

Company Overview

The market values Arqit Quantum Inc. (ARQQ) at $285.40M. It is classified in the Software - Infrastructure industry, within the Technology sector. Headcount on file is 87.

Over the past 52 weeks the price has ranged from $11.52 to $49.33. The most recent close on file for ARQQ is $16.40, dated October 21, 2026. That is +$1.09 (+7.12%) against the previous close. The latest close sits 42.36% above that 52-week low.

Financial Health

The most recent full year on file, fiscal 2025, shows revenue of $530.00K. That is +80.89% against the prior fiscal year, when revenue was $293.00K. The same year closed with a net loss of $35.34M. Earnings per share on a trailing basis come to −3.21.

Across the 4 fiscal years on file, revenue moves from $7.21M in 2022 to $530.00K in 2025. Of those 4 years, 1 report positive net income.

Valuation Assessment

The record shows negative trailing earnings, so no price-to-earnings ratio is published. The price-to-sales ratio is 262.8. On price-to-sales that is 80.4 times the Software - Infrastructure median of 3.27. The medians here are taken across 182 Software - Infrastructure companies that report the metric.

Beta against the wider market is reported at 2.79. Daily returns over the trailing 5 years annualize to a volatility of 131.57%. Over the trailing twelve months the total return is −57.46%. Measured over 5 years, that is −47.66% a year compounded.

Growth & Income

No dividend is on file for ARQQ.

The strongest complete calendar year on file is 2024 at +227.76%; the weakest is 2023 at −86.87%. Of the 4 complete calendar years on file, 1 finished higher. So far in 2026 the total return is −25.05%.

Peer Comparison

Arqit Quantum Inc. (ARQQ) operates in the Software - Infrastructure industry. Here is how it compares to its closest peers by market capitalization:

Company Ticker Market Cap P/E Ratio
Arqit Quantum Inc. ARQQ $285.40M —
Microsoft Corporation MSFT $3.96T 29.7
Palantir Technologies Inc. PLTR $484.74B 173.9
Oracle Corporation ORCL $391.46B 20.2

The Software - Infrastructure industry average P/E ratio is 30.2x. Arqit Quantum Inc. has no P/E ratio because it is not currently profitable.

Every figure above is read from this page's own data on each daily rebuild. Informational only, not financial advice. As of October 21, 2026.

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About Arqit Quantum Inc.

Arqit Quantum Inc. provides cybersecurity services through satellite and terrestrial platforms in the United Kingdom. It offers QuantumCloud, a Platform as a Service that creates unbreakable software encryption keys. The company also provides maintenance and support, and professional services. Arqit Quantum Inc. is based in London, the United Kingdom.

Visit website →