Arqit Quantum Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

BST:3D6 Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Role	Shares	Max Price
10 Nov 25	Buy€11,807,990	Manfredi D’Ovidio	Individual		300,000	€41.63
16 Oct 25	Sell€29,520,783	Manfredi D’Ovidio	Individual		600,000	€49.20

Insider Trading Volume

Insider Buying: 3D6 insiders have sold more shares than they have bought in the past 3 months.

Ownership Breakdown

What is the ownership structure of 3D6?
Owner Type	Number of Shares	Ownership Percentage
Private Companies	251,280	1.61%
Institutions	2,434,032	15.6%
General Public	2,757,204	17.6%
Individual Insiders	10,209,343	65.2%

Dilution of Shares: Shareholders have been diluted in the past year, with total shares outstanding growing by 25.2%.

Top Shareholders

Top 25 shareholders own 81.35% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
59.2%	Manfredi D’Ovidio	9,272,141	€234.7m	63.4%	no data
6.52%	Penserra Capital Management LLC	1,021,248	€25.9m	43.4%	0.31%
2.78%	David Williams	435,443	€11.0m	0%	no data
2.54%	Evolution Equity Partners	397,259	€10.1m	0%	100.0%
1.61%	D2bw Limited	251,280	€6.4m	0%	no data
1.5%	Carlo Calabria	234,363	€5.9m	0%	no data
1.23%	Susquehanna International Group, LLP	192,818	€4.9m	391%	0.01%
0.84%	Garth Ritchie	131,691	€3.3m	0%	no data
0.83%	GWL Investment Management Ltd.	130,581	€3.3m	0%	no data
0.79%	David Bestwick	122,989	€3.1m	0%	no data
0.54%	Raymond James Financial, Inc.	84,713	€2.1m	86.6%	no data
0.49%	UBS Asset Management AG	76,586	€1.9m	-28.9%	no data
0.48%	Legal & General Investment Management Limited	75,771	€1.9m	4.42%	no data
0.26%	SBI Holdings, Inc.	40,249	€1.0m	10%	0.02%
0.26%	Williams And Bestwick Foundation	40,000	€1.0m	0%	no data
0.23%	Banque Pictet & Cie SA	36,000	€911.4k	6,880%	0.01%
0.22%	JPMorgan Chase & Co.	34,033	€861.6k	226%	no data
0.19%	Jane Street Group, LLC	29,304	€741.9k	0%	no data
0.17%	Van Eck Associates Corporation	26,615	€673.8k	460%	no data
0.13%	Advisory Services Network, LLC	19,944	€504.9k	-7.68%	0.01%
0.11%	Simplex Trading, LLC	17,793	€450.5k	5,810%	0.01%
0.11%	Tudor Investment Corporation	16,763	€424.4k	0%	no data
0.097%	Millennium Management LLC	15,161	€383.8k	0%	no data
0.096%	Cookson Peirce & Co Inc	15,000	€379.8k	0%	0.02%
0.092%	ZKB Asset Management	14,473	€366.4k	82.4%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2025/12/12 23:42
End of Day Share Price	2025/12/12 00:00
Earnings	2025/09/30
Annual Earnings	2025/09/30

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Arqit Quantum Inc. is covered by 2 analysts. 1 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Jamie Shelton	Deutsche Bank
Scott Buck	H.C. Wainwright & Co.