ARQQ

Arqit Quantum Inc. Ordinary Shares

Nasdaq · usd

$16.64+0.23 (+1.40%)

As of 2:01:09 PM EDT on Oct 26, 2026 · 15-minute delayed

Arqit Quantum Inc. Ordinary Shares (ARQQ) trades at $16.64 (+1.40%) as of 2:01:09 PM EDT on Oct 26, 2026, -32.36% over the past month. Market cap is $285.57M, with 6.9 days to cover in short interest.

Stock performance

How Arqit Quantum Inc. Ordinary Shares (ARQQ) stock has performed from one day to one year, with its 52-week range.

+1.40%

+$0.23 over 1D

1D: +1.40%
1W: +18.69%
1M: -32.36%
YTD: -23.95%
1Y: -64.63%
52-wk range: $11.52 – $49.33

Key statistics

Today's trading snapshot for ARQQ: day range, open, previous close, volume and market cap.

Day range: $15.84 – $16.92
Open: $16.56
Prev close: $16.41
Volume: 90.87K
Market cap: $285.57M
Shares out: 15.65M

Insider buying and selling

In the 12 months to Oct 26, 2026, 9 ARQQ insiders reported open-market sales of $2.9M across 34 filings; no open-market purchases were filed.

Who traded ARQQ, and when

Sale

ARQQ daily closelast $16.64

d'Ovidio Manfredi Lefebvre · Director

$1.6M sold

Andrew Leaver · Chief Executive Officer

$581.4K sold

Patrick Willcocks · General Counsel

$233.4K sold

Jennifer Bers · Chief Revenue Officer

$177.5K sold

5 others

$242.7K sold

One row per insider, smaller filers combined; marks sit at the SEC filing date, sized by dollar value.

See who traded and when →

Dividend history and stock splits

Arqit Quantum Inc. Ordinary Shares's recent dividend payments and stock splits.

Dividends

No recent dividends.

Splits

1-for-25Sep 25, 2024

ARQQ short interest

How heavily ARQQ is shorted: shares short, days to cover and average daily volume.

Days to cover: 6.9
Short interest: 2.26M
Avg volume: 329.38K

As of Sep 30, 2026 · reported to FINRA twice monthly.

ARQQ news

The latest news and headlines about Arqit Quantum Inc. Ordinary Shares (ARQQ).

A Deadline No One Can Negotiate Is Coming for the World's Encryption, and the Race to Get Ready Has Quietly Begun
neutralGlobeNewswire Inc.· Aug 28, 2026
The Quiet Race to Rewire the World's Encryption Before Quantum Computers Break It
positiveBenzinga· Jun 17, 2026
Can D-Wave Hold Its Own Against 2 Fast-Growing Rivals?
negativeInvesting.com· Jun 16, 2026
As Washington Pours Billions Into Quantum Computing, One Company Says the Real Race Is Defending the Data
positiveBenzinga· Jun 4, 2026
AI-Enabled Cyberespionage Is a National Security Threat. Integrated Cyber Solutions Has an Answer
positiveBenzinga· May 26, 2026

Frequently asked questions

What is the Arqit Quantum Inc. Ordinary Shares (ARQQ) stock price today?

Arqit Quantum Inc. Ordinary Shares (ARQQ) is trading at $16.64 (+1.40% on the day) as of 2:01:09 PM EDT on Oct 26, 2026. Prices are delayed at least 15 minutes; real-time quotes are available from the Massive API.

What is Arqit Quantum Inc. Ordinary Shares?

Arqit Quantum Inc is a cybersecurity company that has pioneered a symmetric key agreement technology that makes the communications links of any networked device or data at rest secure against current and future forms of cyber attack - even an attack from a quantum computer.

What is the short interest in ARQQ?

As of Sep 30, 2026, ARQQ has 2.26M shares short and 6.9 days to cover.

What exchange is ARQQ listed on?

Arqit Quantum Inc. Ordinary Shares (ARQQ) trades on Nasdaq in USD.

Build with AI

Build an analysis of ARQQ with your agent

Point Claude or ChatGPT at the Massive MCP server and recreate this page from live data.

Claude ChatGPT

Connect the Massive MCP server (API reference: massive.com/docs/llms.txt) and build a ARQQ analysis: the latest quote, key ratios (P/E, P/S, ROE), short interest, recent insider activity and the latest news.

Live market data from the Massive API and MCP.Get a free API key

Nothing on this page is investment advice. All data and content is provided for informational purposes under our Terms of Service.