Arqit Quantum
Provides encryption keys, secure networks and encryption-risk analysis.
$20.16
After-hours close+0.16 (+0.80%)
At close$20.00(−6.80%)
Something off on this page? Send us feedback.
Breakdown13F · Form 4
Institutions 70.73%12.31M sharesInsiders 27.79%4.84M sharesOther 1.48%257.9K shares
Shares outstanding 17.40M · Float 8.53M · 49.0% free float
Institutions13F, as of Jun 30, 2026
74 holders · 12.31M shares · 24 new positions · 46 increased · 12 reduced · 13 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| Defiance Etfs, LLC | 5.10M | 29.30% | +3.65M | Aug 14, 2026 |
| Penserra Capital Management LLC | 5.08M | 29.20% | +3.63M | Aug 13, 2026 |
| UBS Group AG | 522.9K | 3.00% | +437.4K | Aug 13, 2026 |
| Legal & General Group PLC | 275.9K | 1.59% | +223.3K | Aug 14, 2026 |
| National Bank of Canada /FI/ | 212.0K | 1.22% | +210.9K | Aug 10, 2026 |
| Mirae Asset Global Etfs Holdings Ltd. | 188.2K | 1.08% | −136.1K | Aug 14, 2026 |
| Kessler Investment Group, LLC | 153.1K | 0.88% | −4.5K | Jul 13, 2026 |
| Bank of New York Mellon Corp | 99.1K | 0.57% | +87.2K | Aug 6, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Manfredi Lefebvre d'Ovidioincl. Heritage Assets SCSp, M Management S.A. | 38.60% | 9.30M | 13D | May 26, 2026 ↗ |
| Sarah Jane Williams | 6.30% | 432.3K | 13G | Oct 1, 2024 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| d'Ovidio Manfredi Lefebvre | director | 4.39M | 25.23% | Jul 21, 2026 |
| Carlo Calabria | director | 232.5K | 1.34% | Jul 21, 2026 |
| Garth Ritchie | director | 105.5K | 0.61% | Jul 21, 2026 |
| Andrew Leaver | officer: Chief Executive Officer | 51.5K | 0.30% | Jul 6, 2026 |
| Paul Feenan | officer: Chief Revenue Officer | 19.4K | 0.11% | Jul 6, 2026 |
| Nicholas Pointon | officer: Chief Financial Officer | 16.2K | 0.09% | May 20, 2026 |
| Patrick Willcocks | officer: General Counsel | 9.5K | 0.05% | Jul 6, 2026 |
| Jennifer Bers | officer: Chief Revenue Officer | 6.7K | 0.04% | Jun 24, 2026 |
| Ben Simon Wilder | officer: Chief Operating Officer | 3.6K | 0.02% | Jul 6, 2026 |
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Jul 10, 2026 | d'Ovidio Manfredi Lefebvredirector | Sale | 8 | 14,097 | |
| Jul 9, 2026 | d'Ovidio Manfredi Lefebvredirector | Sale | 404 | 14,105 | |
| Jul 8, 2026 | d'Ovidio Manfredi Lefebvredirector | Sale | 110 | 14,509 | |
| Jul 7, 2026 | d'Ovidio Manfredi Lefebvredirector | Sale | 40 | 14,619 | |
| Jul 6, 2026 | d'Ovidio Manfredi Lefebvredirector | Sale | 97 | 14,659 | |
| Jul 2, 2026 | d'Ovidio Manfredi Lefebvredirector | Sale | 36 | 14,756 | |
| Jul 2, 2026 | Paul Feenanofficer: Chief Revenue Officer | Sale | 1,834 | $25.20 | 19,351 |
| Jul 2, 2026 | Ben Simon Wilderofficer: Chief Operating Officer | Sale | 769 | $25.20 | 3,582 |
| Jul 2, 2026 | Andrew Leaverofficer: Chief Executive Officer | Sale | 9,893 | $25.20 | 51,483 |
| Jul 2, 2026 | Garth Ritchiedirector | Sale | 439 | $25.20 | 104,609 |
CongressHouse and Senate disclosures
Not reported.