NasdaqTechnologyServices-Prepackaged SoftwareLONDON, United Kingdom

Arqit Quantum Inc. ARQQ

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The newest share count in the company’s SEC filings is over 13 months oldCIK 1859690

Insider trades, 12 mo

0 buys · 16 sells

$2.51M sold, open market

Congress trades, 24 mo

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No disclosed trades

13F holders, Q3 2026

19 added · 7 trimmed

13F holders

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Lobbying, 12 mo

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No lobbying filings

Federal contracts, 12 mo

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None matched

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Latest 10-Q

What changed in Arqit Quantum Inc.'s latest quarterly report, compared with the one before.

We have not read a recent 10-Q for this company yet.

Insider trades

16 in 12 mo

Open-market trades from Form 4. 10b5-1 marks a plan set in advance.

No open-market insider trades reported since Jul 2, 2026. Insiders have two business days to file.

Recent insider trades

Patrick Willcocks General Counsel	Jul 2 Form 4 ↗	Sale	−$50.6K 2,009 sh @ $25.20	-38.5%
Garth Ritchie Director	Jul 2 Form 4 ↗	Sale	−$11.1K 439 sh @ $25.20	-38.5%
Andrew Leaver Chief Executive Officer	Jul 2 Form 4 ↗	Sale	−$249.3K 9,893 sh @ $25.20	-38.5%
Ben Simon Wilder Chief Operating Officer	Jul 2 Form 4 ↗	Sale	−$19.4K 769 sh @ $25.20	-38.5%
Paul Feenan Chief Revenue Officer	Jul 2 Form 4 ↗	Sale	−$46.2K 1,834 sh @ $25.20	-38.5%

All ARQQ insider trades →Planned sales (Form 144): see notices

Insider trades

Open-market trades from Form 4. 10b5-1 marks a plan set in advance.

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13F holders

902,514 shares

46 funds report ARQQ. Values checked against market prices.

Funds own 80% of shares (Q2 2026)

64 funds hold the stock.

Q3 2026: 5.9% · 5,560 of ~8,900 funds reported so far

Q2 20258.0%
Q3 202512%
Q4 202525%
Q1 202626%
Q2 202680%
Q3 2026 (so far)5.9%

Q3 2026. 11 new, 19 added to, 7 trimmed, 29 exited since Q2 2026.

Top 13F holders
#
1	UBS Group AG 13F ↗	264,451	$6.4M	-49.4%
2	Raymond James Financial Inc 13F ↗	118,667	$2.9M	+24.6%
3	VAN ECK Associates Corp 13F ↗	91,164	$2.2M	+84.2%
4	Tidal Investments LLC 13F ↗	72,542	$1.7M	+352.8%
5	Cetera Investment Advisers 13F ↗	37,925	$912.5K	-0.7%
6	SBI Securities Co., Ltd. 13F ↗	28,508	$685.9K	+9.1%
7	BlackRock, Inc. 13F ↗	26,091	$627.8K	+296.1%
8	Cambridge Investment Research Advisors, Inc. 13F ↗	24,607	$592.0K	New
9	State Street Corp 13F ↗	23,889	$574.8K	New
10	LPL Financial LLC 13F ↗	22,864	$550.1K	+33.6%

One of these funds reports its values in thousands of dollars; its figures are shown in dollars.

Download CSV Every fund that holds ARQQ, not only these ten. A download holds at most 10,000 rows; narrow the filters to get a smaller slice.

13F holders

Funds that report this stock, checked against market prices.

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Trades by members of Congress

Disclosed in dollar ranges, up to 45 days after the trade.

No recent congressional trades for this company.

Trades by members of Congress

Disclosed in dollar ranges, up to 45 days after the trade.

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Lobbying

What Arqit Quantum Inc. and its lobbying firms report each quarter.

No recent lobbying filings for this company.

Lobbying

What Arqit Quantum Inc. and its lobbying firms report each quarter.

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Institutional ownership over time

How many funds reported holding the stock at the end of each quarter, and how many shares they held between them.

Funds holding the stock

Shares they report

Funds holding the stock by quarter

Q3 2024	13	—	45,136	$257.3K
Q4 2024	30	+17	320,891	$12.3M
Q1 2025	31	+1	496,588	$6.9M
Q2 2025	42	+11	1.23M	$45.4M
Q3 2025	57	+15	1.89M	$73.1M
Q4 2025	60	+3	3.76M	$82.3M
Q1 2026	56	-4	4.02M	$53.2M
Q2 2026	64	+8	12.31M	$360.6M
Q3 2026	46	-18	902,514	$21.7M

Each point is a quarter-end, from Q3 2024 to Q3 2026. A fund's 13F lists its long positions in US-listed securities as of the last day of the quarter and arrives up to 45 days later, so each point shows holdings at quarter-end, not on the day they were reported.

Common shares only; options and bonds are left out. When a fund amends a report, the amended version is the one counted.

The history follows the company's current CUSIP number (G0567U127). If the company's shares were ever re-issued under a different CUSIP, the quarters before the change are not part of this series, so the first point (Q3 2024) can be later than the stock's first appearance in 13F reports.

Share counts are adjusted for stock splits; none took place between these quarters. Values are in dollars as reported at the time and are not adjusted.

A quarter appears once our daily update has built its summary. If a summary cannot be built, older reports are kept and the chart shows the quarters it has until the next update repairs it.

Institutional ownership over time

How many funds reported holding the stock at the end of each quarter, and how many shares they held between them.

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More filings and data

Each opens the table.

Ownership stakes3 in 12 mo 8-K eventsNone in 90 days PatentsNone on record Short interestFINRA · updated Oct 15 Planned insider salesForm 144 · 44 in 12 mo Executive payNone on record Wikipedia attentionNone on record SEC enforcementNone on record IPO history1 registration Ownership stakes…8-K events…Patents…Short interest…Planned insider sales…Executive pay…Wikipedia attention…SEC enforcement…

About the company

The basics from the company’s SEC registration.

Legal name: Arqit Quantum Inc.
Address: 3 ORCHARD PLACE, LONDON, United Kingdom SW1H 0BF
Phone: 44 203 91 70155
Fiscal year ends: Sep 30
Filer category: Accelerated filer, emerging growth company
Incorporated in: Cayman Islands
Listed as: ARQQ (Nasdaq)
SEC filings: All filings on SEC EDGAR ↗

About the company

The basics from the company’s SEC registration.

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$14.76−$0.10 (−0.67%) Nov 13 close

1M3M1Y

Oct 13, 2026Low $12.28 · High $18.47Nov 13, 2026

Aug 13, 2026Low $12.28 · High $24.64Nov 13, 2026

Nov 13, 2025Low $11.78 · High $31.50Nov 13, 2026

Congress purchase Congress sale Insider sale over $1M

Adjusted for stock splits; not for dividends. Where prices come from.

Live chart

Intraday and historical prices from TradingView. Quotes may be delayed.

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Information, not investment advice. Company matching is automatic; check the source before relying on one row.