Arqit Quantum Inc. - Ordinary Shares, par value $0.0025 per share (ARQQ) Institutional Ownership

13F Institutional Holders and Ownership History from Q3 2024 to Q4 2025

Type / Class
Equity / Ordinary Shares, par value $0.0025 per share
Symbol
ARQQ on Nasdaq
Shares outstanding
22,182,156
Price per share
$22.27
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
3,758,546
Total reported value
$82,319,542
% of total 13F portfolios
0%
Share change
+533,194
Value change
+$8,834,170
Number of holders
59
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Arqit Quantum Inc. - Ordinary Shares, par value $0.0025 per share (ARQQ) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
Heritage Assets SCSp. 42% -3.3% $359,295,464 -$12,462,891 9,272,141 -3.4% Heritage Assets SCSp 10 Nov 2025
D2BW Ltd 5.8% $11,990,930 726,723 Williams David John 11 Dec 2024
Evolution Technology Fund II, SCSP. 3.1% $6,554,774 397,259 The Evolution Technology Fund II SCSP 30 Sep 2024

As of 31 Dec 2025, 59 institutional investors reported holding 3,758,546 shares of Arqit Quantum Inc. - Ordinary Shares, par value $0.0025 per share (ARQQ). This represents 17% of the company’s total 22,182,156 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of Arqit Quantum Inc. - Ordinary Shares, par value $0.0025 per share (ARQQ) together control 17% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
Penserra Capital Management LLC 6.2% 1,378,655 +35% 0.36% $30,164,000
Defiance ETFs, LLC 6.2% 1,378,655 0% 0.99% $30,247,691
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 1.4% 301,713 0.01% $6,601,655
UBS Group AG 0.66% 147,397 +92% 0% $3,225,047
Legal & General Group Plc 0.3% 66,232 -13% 0% $1,449,157
JANE STREET GROUP, LLC 0.3% 65,775 +124% 0% $1,439,157
RAYMOND JAMES FINANCIAL INC 0.29% 63,253 -25% 0% $1,383,976
Kessler Investment Group, LLC 0.22% 47,849 0.44% $1,046,936
BANQUE PICTET & CIE SA 0.16% 36,000 0% 0.01% $787,680
SBI Securities Co., Ltd. 0.14% 31,079 -23% 0.02% $680,009
NATIONAL BANK OF CANADA /FI/ 0.14% 30,334 +4197% 0% $663,688
SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.09% 20,033 -90% 0% $438,322
Advisory Services Network, LLC 0.09% 19,944 0% 0.01% $436,375
BANK OF AMERICA CORP /DE/ 0.09% 19,504 +6626% 0% $426,748
Bank of New York Mellon Corp 0.09% 18,976 0% $415,205
CITIGROUP INC 0.09% 18,859 +98% 0% $412,634
GROUP ONE TRADING LLC 0.07% 15,799 +202% 0.01% $345,682
VAN ECK ASSOCIATES CORP 0.06% 13,193 -50% 0% $289,000
Veracity Capital LLC 0.06% 12,207 -6.2% 0.08% $267,089
Stonehage Fleming Financial Services Holdings Ltd 0.05% 11,528 0.01% $252,232
WELLS FARGO & COMPANY/MN 0.05% 10,195 +305% 0% $223,067
MORGAN STANLEY 0.05% 10,045 +25% 0% $219,785
Zurcher Kantonalbank (Zurich Cantonalbank) 0.03% 7,038 -51% 0% $153,991
Mirae Asset Global Investments Co., Ltd. 0.02% 5,019 0% $109,816
Leonteq Securities AG 0.02% 4,500 +24% 0.01% $98,460

Institutional Holders of Arqit Quantum Inc. - Ordinary Shares, par value $0.0025 per share (ARQQ) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 3,758,546 $82,319,542 +$8,834,170 $21.88 59
2025 Q3 1,853,070 $71,770,818 +$25,147,185 $38.75 57
2025 Q2 1,202,647 $44,476,147 +$28,918,523 $37.03 41
2025 Q1 496,588 $6,880,844 -$346,034 $13.86 31
2024 Q4 310,891 $12,068,293 +$9,502,613 $38.84 29
2024 Q3 45,079 $256,951 +$256,951 $5.70 12