ARQQ · Arqit Quantum Inc. · Shareholders & Ownership

$16.41 +0.60 (+3.80%) At close · Oct 23

Market Cap

$293.06M

17.40M

Volume · Oct 23 148.31K Avg daily vol (3M) 319.16K

Every disclosed holder of ARQQ in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

How the holder list picks a filing →

Who Owns ARQQ

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

No chart: shares outstanding cannot be set against these holders.

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	67	15,536,146	—	Yes
Insiders (Forms 3, 4, 5)	0	0	—	No
13D/G-only blocks	6	12,086,664	—	Yes
Registered funds (N-PORT, not summed)	2	211,345	—	No

% Out is unavailable: a foreign private issuer reports ordinary shares, a different unit from the listed shares.

Insiders are listed but not summed: the issuer has more than one class of common stock and Forms 3, 4 and 5 report one issuer-wide balance across them.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of ARQQ

One row per holder Every filing By ultimate parent

All 13F Funds Insiders 13D/G Non-US

#	Holder	Shares	% Out	Change	As of	Notes
1	Heritage Assets SCSp. 13D CIK 1882923 · Unknown · May 21, 2026 Item 4 purpose: Other	9,249,963	—	-22,178	May 21, 2026
2	Lefebvre d'Ovidio Manfredi Insider CIK 1840678 · Oct 16, 2026 Director, issuer-wide, not summed	8,996,372	—	+8,943,265	Oct 16, 2026	Director, issuer-wide, not summed
3	Defiance ETFs, LLC 13F CIK 1732541 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	5,099,023	—	+3,646,712	Jun 30, 2026	carried, not yet filed for the newest quarter
4	Penserra Capital Management LLC 13F CIK 1593324 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	5,081,219	—	+3,628,908	Jun 30, 2026	carried, not yet filed for the newest quarter
5	Foundations Investment Advisors, LLC 13F CIK 1743404 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,953,810	—	-84,811	Jun 30, 2026	carried, not yet filed for the newest quarter
6	Notion Capital III LP 13G CIK 1703026 · Unknown · Jun 26, 2026 Rule 13d-1(d), exempt investor	1,812,206	—	—	Jun 26, 2026	Rule 13d-1(d), exempt investor
7	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 Classes ARQQ, ARQQW, carried, not yet filed for the newest quarter	524,666	—	+437,035	Jun 30, 2026	Classes ARQQ, ARQQW, carried, not yet filed for the newest quarter
8	The Evolution Technology Fund II SCSP 13D CIK 1883221 · Unknown · Sep 30, 2024	397,259	—	+1	Sep 30, 2024
9	Sarah Jane Williams 13G CIK 2038526 · Unknown · Oct 9, 2024 Rule 13d-1(d), exempt investor	317,335	—	-115,000	Oct 9, 2024	Rule 13d-1(d), exempt investor
10	Legal & General Group Plc 13F CIK 764068 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	275,939	—	+223,307	Jun 30, 2026	carried, not yet filed for the newest quarter
11	D2BW Ltd 13D CIK 1883492 · Unknown · Dec 11, 2024	251,280	—	-710,544	Dec 11, 2024
12	Calabria Carlo Insider CIK 1863192 · Oct 16, 2026 Director, issuer-wide, not summed	234,147	—	+919	Oct 16, 2026	Director, issuer-wide, not summed
13	NATIONAL BANK OF CANADA /FI/ 13F CIK 926171 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	212,000	—	+210,907	Jun 30, 2026	carried, not yet filed for the newest quarter
14	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 13F CIK 1705339 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	188,182	—	-136,127	Jun 30, 2026	carried, not yet filed for the newest quarter
14.1	Global X Cybersecurity ETF Fund S000066713 · Registered fund · May 31, 2026 GLOBAL X FUNDS, not summed	179,951	—	-116,404	May 31, 2026	GLOBAL X FUNDS, not summed
15	Kessler Investment Group, LLC 13F CIK 1525947 · Registered investment adviser · Sep 30, 2026	138,545	—	-14,560	Sep 30, 2026
16	Ritchie Garth Insider CIK 1840684 · Oct 16, 2026 Director, issuer-wide, not summed	106,855	—	+1,021	Oct 16, 2026	Director, issuer-wide, not summed
17	Bank of New York Mellon Corp 13F CIK 1390777 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	99,146	—	+87,234	Jun 30, 2026	carried, not yet filed for the newest quarter
18	RAYMOND JAMES FINANCIAL INC 13F CIK 720005 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	95,250	—	+31,413	Jun 30, 2026	carried, not yet filed for the newest quarter
19	MILLENNIUM MANAGEMENT LLC 13F CIK 1273087 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	78,717	—	+24,691	Jun 30, 2026	carried, not yet filed for the newest quarter
20	Vestcor Inc 13F CIK 1536925 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	75,000	—	0	Jun 30, 2026	carried, not yet filed for the newest quarter
21	HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 13F CIK 1535845 · Non-US institution · Jun 30, 2026 Classes ARQQ, ARQQW, carried, not yet filed for the newest quarter	73,729	—	0	Jun 30, 2026	Classes ARQQ, ARQQW, carried, not yet filed for the newest quarter
22	Millennium Management LLC 13G CIK 1487118 · Unknown · Jun 16, 2026 Rule 13d-1(c), passive investor	58,621	—	—	Jun 16, 2026	Rule 13d-1(c), passive investor
23	GOLDMAN SACHS GROUP INC 13F CIK 886982 · Holding company · Jun 30, 2026 Classes ARQQ, ARQQW, carried, not yet filed for the newest quarter	54,613	—	+7,293	Jun 30, 2026	Classes ARQQ, ARQQW, carried, not yet filed for the newest quarter
24	BANK OF AMERICA CORP /DE/ 13F CIK 70858 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	54,192	—	+35,000	Jun 30, 2026	carried, not yet filed for the newest quarter
25	Leaver Andrew Insider CIK 2035890 · Oct 13, 2026 Chief Executive Officer, issuer-wide, not summed	53,966	—	-2,573	Oct 13, 2026	Chief Executive Officer, issuer-wide, not summed
26	VAN ECK ASSOCIATES CORP 13F CIK 869178 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	49,487	—	+29,334	Jun 30, 2026	carried, not yet filed for the newest quarter
27	JANE STREET GROUP, LLC 13F CIK 1595888 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	42,263	—	-33,599	Jun 30, 2026	carried, not yet filed for the newest quarter
28	Silver Rock Financial LP 13F CIK 1674784 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	42,139	—	0	Jun 30, 2026	carried, not yet filed for the newest quarter
29	Cetera Investment Advisers 13F CIK 1666741 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	38,198	—	+38,198	Jun 30, 2026	carried, not yet filed for the newest quarter
30	BANQUE PICTET & CIE SA 13F CIK 1535602 · Unknown · Sep 30, 2026	36,000	—	0	Sep 30, 2026
31	KKM Financial LLC 13F CIK 2001943 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	31,394	—	+31,394	Jun 30, 2026	carried, not yet filed for the newest quarter
32	Mango Growth ETF Fund S000098510 · Registered fund · Jul 31, 2026 ADVISORS' INNER CIRCLE FUND II, not summed	31,394	—	+644	Jul 31, 2026	ADVISORS' INNER CIRCLE FUND II, not summed
33	SBI Securities Co., Ltd. 13F CIK 1851815 · Non-US institution · Sep 30, 2026	28,508	—	+2,373	Sep 30, 2026
34	Man Group plc 13F CIK 1637460 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	26,210	—	+26,210	Jun 30, 2026	carried, not yet filed for the newest quarter
35	Advisory Services Network, LLC 13F CIK 1573876 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	21,737	—	-10	Jun 30, 2026	carried, not yet filed for the newest quarter
36	Zurcher Kantonalbank (Zurich Cantonalbank) 13F CIK 1368163 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	21,296	—	+11,318	Jun 30, 2026	carried, not yet filed for the newest quarter
37	WELLS FARGO & COMPANY/MN 13F CIK 72971 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	21,291	—	+6,198	Jun 30, 2026	carried, not yet filed for the newest quarter
38	Feenan Paul Insider CIK 1967068 · Oct 6, 2026 Chief Revenue Officer, issuer-wide, not summed	20,912	—	-504	Oct 6, 2026	Chief Revenue Officer, issuer-wide, not summed
39	LPL Financial LLC 13F CIK 1403438 · Broker-dealer · Jun 30, 2026 carried, not yet filed for the newest quarter	17,109	—	+17,109	Jun 30, 2026	carried, not yet filed for the newest quarter
40	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	16,276	—	+6,897	Jun 30, 2026	carried, not yet filed for the newest quarter
41	Pointon Nicholas Insider CIK 1967201 · Apr 20, 2026 Chief Financial Officer, issuer-wide, not summed	16,238	—	+2,631	Apr 20, 2026	Chief Financial Officer, issuer-wide, not summed
42	Tidal Investments LLC 13F CIK 1600064 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	16,020	—	+16,020	Jun 30, 2026	carried, not yet filed for the newest quarter
43	CITIGROUP INC 13F CIK 831001 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	14,572	—	+4,725	Jun 30, 2026	carried, not yet filed for the newest quarter
44	GROUP ONE TRADING LLC 13F CIK 932540 · Broker-dealer · Jun 30, 2026 carried, not yet filed for the newest quarter	12,682	—	-774	Jun 30, 2026	carried, not yet filed for the newest quarter
45	SIMPLEX TRADING, LLC 13F CIK 1488542 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	11,472	—	+11,472	Jun 30, 2026	carried, not yet filed for the newest quarter
46	Willcocks Patrick Insider CIK 1967211 · Oct 6, 2026 General Counsel, issuer-wide, not summed	11,209	—	-555	Oct 6, 2026	General Counsel, issuer-wide, not summed
47	WOLVERINE ASSET MANAGEMENT LLC 13F CIK 1279891 · Registered investment adviser · Jun 30, 2026 Classes ARQQ, ARQQW, carried, not yet filed for the newest quarter	10,818	—	+7,047	Jun 30, 2026	Classes ARQQ, ARQQW, carried, not yet filed for the newest quarter
48	ROYAL BANK OF CANADA 13F CIK 1000275 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	9,519	—	+2,507	Jun 30, 2026	carried, not yet filed for the newest quarter
49	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	9,294	—	+9,294	Jun 30, 2026	carried, not yet filed for the newest quarter
50	McGuire Investment Group, LLC 13F CIK 1756959 · Registered investment adviser · Sep 30, 2026	9,148	—	+2,220	Sep 30, 2026

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 84 holders

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Key facts CIK 1859690 CUSIP G0567U127 13F (30d) 10 filings 10 filers Visit website Investor relations