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Arqit Quantum ARQQ · USD

Information Technology · US listing · 🇺🇸 United States

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16.86

+5.64%

Close of 9 Nov 2026, in USD

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Reference data, closing prices and charts across 45,000 companies, plus crypto, commodities and currencies.

Largest shareholders

As filed, so dates differ, and a group and its funds can both appear.

HolderSharesStakeChangeFiled
Defiance ETFs, LLC5.1m36.98%+3.6m30 Jun 2026
PENSERRA CAPITAL MANAGEMENT LLC5.1m36.85%+3.6m30 Jun 2026
UBS GROUP AG522.9k3.79%+437.4k30 Jun 2026
LEGAL & GENERAL GROUP PLC275.9k2.00%+223.3k30 Jun 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP246.1k1.78%+112.8k30 Jun 2026
JANE STREET GROUP, LLC221.7k1.61%+203.6k30 Jun 2026
NATIONAL BANK OF CANADA /FI/212k1.54%+210.9k30 Jun 2026
MIRAE ASSET GLOBAL ETFS HOLDINGS LTD.188.2k1.36%−136.1k30 Jun 2026
KESSLER INVESTMENT GROUP, LLC153.1k1.11%−4.5k30 Jun 2026
CRAWFORD FUND MANAGEMENT, LLC148k1.07%+88k30 Jun 2026
CITADEL ADVISORS LLC111.9k0.81%+7.9k30 Jun 2026
BANK OF NEW YORK MELLON CORP99.1k0.72%+87.2k30 Jun 2026
RAYMOND JAMES FINANCIAL INC95.3k0.69%+31.4k30 Jun 2026
MILLENNIUM MANAGEMENT LLC78.7k0.57%+24.7k30 Jun 2026
BANK OF AMERICA CORP /DE/54.2k0.39%+35k30 Jun 2026

Short interest

Shares sold short, 15 Oct 2026. US exchange data.

2.3m

+0.9% on the period before. 7.2 days to cover.

Short volume

Share of the day's trading sold short, 4 Nov 2026

52.9%

Last 60 trading days.

Failed deliveries

Shares not delivered on settlement, from the SEC

  • 30 Sept 2026186 shares
  • 29 Sept 20266,847 shares
  • 28 Sept 20265,539 shares
  • 25 Sept 20266,457 shares
  • 23 Sept 202641,102 shares

Sources and methodology

Data on this tab
Our data supplier
Chart on the Overview
TradingView

Nothing here is investment advice. Prices can be delayed or wrong, so check with the exchange before relying on them. Data for this page. How we cover markets.