Arqit Quantum Inc.

ARQQW • NASDAQ

Arqit Quantum Inc. is a publicly traded company on NASDAQ. As of Q3 2025, 9 institutional investors hold shares in this company, with total holdings valued at $8.4M. SLT Holdings LLC is the largest holder with a position valued at $3.8M.

Employees147.0

Websitearqit.uk

Overview

Overview of institutional ownership in ARQQW as of Q3 2025

All Institutions

Institutions: 9
Value Held: $8.4M
Shares Held: 8.3M
Avg Position: $929.0K
Median Position: $69.3K

Hedge Funds

Hedge Funds: 1
Value Held: $39.6K
Shares Held: 42.1K
Avg Position: $39.6K
Median Position: $39.6K

Biggest Investors

Institutions with the largest positions in ARQQW as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
SLT Holdings LLC RIA/Wealth	Zachary Stuart Brodt President	$3.8M 2.51% of portfolio	0.00% 4.1M shares	Q4 2024 Held for 11 months	$152.0M
Foundations Investment Advisors, LLC RIA/Wealth	Bryon Rice CEO	$3.8M 0.06% of portfolio	0.00% 4.1M shares	Q4 2024 Held for 11 months	$6.8B
X XTX Topco Ltd Institution	-	$325.3K 0.02% of portfolio	0.00% 8.4K shares	Q3 2025 Held for 2 months	$1.9B
Frigate Ventures LP RIA/Wealth	Anthony Lawrence Moore CFO	$205.4K 0.02% of portfolio	0.00% 5.3K shares	Q3 2025 Held for 2 months	$827.1M
H HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND Institution	-	$69.3K 0.00% of portfolio	0.00% 73.7K shares	Q4 2022 Held for 2y 11m	$53.3B
GOLDMAN SACHS GROUP INC Institution	David M. Solomon CEO	$44.5K 0.00% of portfolio	0.00% 47.3K shares	Q4 2022 Held for 2y 11m	$691.34B
Silver Rock Financial LP Hedge Fund•Credit Arb	Carl Dewolf Meyer CEO	$39.6K 0.10% of portfolio	0.00% 42.1K shares	Q4 2022 Held for 2y 11m	$40.3M
J JANE STREET GROUP, LLC Institution	-	$37.4K 0.00% of portfolio	0.00% 39.8K shares	Q4 2022 Held for 2y 11m	$84.1B
A Advisor Group Holdings, Inc. Institution	-	$7.3K 0.00% of portfolio	0.00% 7.8K shares	Q3 2025 Held for 2 months	$71.0B
UBS Group AG Institution	Sergio P. Ermotti CEO	- 0.00% of portfolio	0.00% - shares	Q4 2024 Held for 11 months	$511.54B

Net Capital Flow

Institutional buying and selling activity for ARQQW in Q3 2025

Traded: +$342.7K
Buyers: 4
Sellers: 6
Total Bought: +$552.9K
Total Sold: −$210.3K
Avg Position: $696.7K

Biggest Buyers

Institution	Net Bought	Current Position
X XTX Topco Ltd Institution	+$325.3K +8.4K shares	$325.3K 8.4K shares
Frigate Ventures LP RIA/Wealth	+$205.4K +5.3K shares	$205.4K 5.3K shares
J JANE STREET GROUP, LLC Institution	+$14.9K +15.9K shares	$37.4K 39.8K shares
A Advisor Group Holdings, Inc. Institution	+$7.3K +7.8K shares	$7.3K 7.8K shares

Biggest Sellers

Institution	Net Sold	Current Position
SLT Holdings LLC RIA/Wealth	−$80.9K −86.0K shares	$3.8M 4.1M shares
Foundations Investment Advisors, LLC RIA/Wealth	−$80.9K −86.0K shares	$3.8M 4.1M shares
GOLDMAN SACHS GROUP INC Institution	−$23.5K −25.0K shares	$44.5K 47.3K shares
WOLVERINE ASSET MANAGEMENT LLC Hedge Fund•Multi-Strategy	−$14.9K −16.5K shares	Sold Off 0 shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	−$9.9K −11.4K shares	Sold Off 0 shares
UBS Group AG Institution	−$185.0 −205.0 shares	Sold Off 0 shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited ARQQW in Q3 2025

New Positions: 2
New Value: $332.6K
Exited Positions: 3
Exited Value: $25.0K

New Positions

Institution	Position Value
X XTX Topco Ltd Institution	$325.3K 8.4K shares
A Advisor Group Holdings, Inc. Institution	$7.3K 7.8K shares

Exited Positions

Institution	Previous Position
WOLVERINE ASSET MANAGEMENT LLC Hedge Fund•Multi-Strategy	$14.9K 16.5K shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$9.9K 11.4K shares
UBS Group AG Institution	$185.0 205.0 shares

Options Activity

Institutions with the largest Call and Put options positions in ARQQW as of Q3 2025

Call Positions: 1
Call Value: $183.3K
Put Positions: 0
Put Value: -

Call Positions

Institution	Position Value
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	$183.3K 2.0K contracts

Put Positions

Institution	Position Value
No put positions found

Most Committed Institutions

Institutions with ARQQW as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
SLT Holdings LLC RIA/Wealth	Zachary Stuart Brodt President	2.51% $3.8M	0.00% 4.1M shares	Q4 2024 Held for 11 months	$152.0M
Silver Rock Financial LP Hedge Fund•Credit Arb	Carl Dewolf Meyer CEO	0.10% $39.6K	0.00% 42.1K shares	Q4 2022 Held for 2y 11m	$40.3M
Foundations Investment Advisors, LLC RIA/Wealth	Bryon Rice CEO	0.06% $3.8M	0.00% 4.1M shares	Q4 2024 Held for 11 months	$6.8B
Frigate Ventures LP RIA/Wealth	Anthony Lawrence Moore CFO	0.02% $205.4K	0.00% 5.3K shares	Q3 2025 Held for 2 months	$827.1M
X XTX Topco Ltd Institution	-	0.02% $325.3K	0.00% 8.4K shares	Q3 2025 Held for 2 months	$1.9B
H HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND Institution	-	0.00% $69.3K	0.00% 73.7K shares	Q4 2022 Held for 2y 11m	$53.3B
J JANE STREET GROUP, LLC Institution	-	0.00% $37.4K	0.00% 39.8K shares	Q4 2022 Held for 2y 11m	$84.1B
A Advisor Group Holdings, Inc. Institution	-	0.00% $7.3K	0.00% 7.8K shares	Q3 2025 Held for 2 months	$71.0B
GOLDMAN SACHS GROUP INC Institution	David M. Solomon CEO	0.00% $44.5K	0.00% 47.3K shares	Q4 2022 Held for 2y 11m	$691.34B
UBS Group AG Institution	Sergio P. Ermotti CEO	0.00% -	0.00% - shares	Q4 2024 Held for 11 months	$511.54B

Hedge Fund Spotlight

Discover hedge funds investing in ARQQW

Silver Rock Financial LP

Hedge Fund • Credit Arb

Portfolio ManagerCarl Dewolf Meyer

Portfolio Value: $40.3M
Positions: 23
Last Reported: Q3 2025

Sector Allocation

Position in Arqit Quantum Inc.

Market Value: $39.6K
Shares Held: 42.1K
Portfolio Weight: 0.10%
Owned Since: 2022-Q4

Top Holding	Sector	Market Value	Weight
1 Comcast CMCSA	Telecommunications Services Communication Services	$19.2M	47.66%
2 Acadia Healthcare ACHC	Medical - Care Facilities Healthcare	$8.9M	22.11%
3 Community Health Systems CYH	Medical - Care Facilities Healthcare	$3.9M	9.55%