Arqit Quantum
ARQQ · NASDAQ
$16.41+$0.60 (+3.80%)TodayMarket closed ·
Prev close $15.81
Who owns ARQQ
Largest institutional holders, from their latest 13F filings
| Holder | Shares | % of shares |
|---|---|---|
| Heritage Assets SCSp | 5.78M | 33.20% |
| Defiance ETFs, LLC | 5.10M | 29.30% |
| Penserra Capital Management LLC | 5.08M | 29.20% |
| Notion Capital Managers LLP | 1.19M | 6.86% |
| Williams (David John) | 475.44K | 2.73% |
| UBS Financial Services, Inc. | 465.41K | 2.67% |
| Legal & General Investment Management Ltd. | 275.94K | 1.59% |
| D2BW Ltd | 251.28K | 1.44% |
| Calabria (Carlo) | 230.87K | 1.33% |
| National Bank of Canada | 212.00K | 1.22% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Defiance Quantum ETF | 5.03M | 28.89% |
| Global X Cybersecurity ETF | 223.15K | 1.28% |
| VanEck Quantum Computing UCITS ETF | 54.69K | 0.31% |
| Defiance Pure Quantum ETF | 51.19K | 0.29% |
| Optimix Wereld Aandelen Fonds NV | 35.00K | 0.20% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $2.70M (81 trades) of ARQQ on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Calabria Carlo | Option exercise | 919 | — |
| Calabria Carlo | Option exercise | 919 | — |
| Ritchie Garth | Option exercise | 1.02K | — |
| Ritchie Garth | Option exercise | 1.02K | — |
| Lefebvre d'Ovidio Manfredi | Option exercise | 817 | — |
| Lefebvre d'Ovidio Manfredi | Option exercise | 817 | — |
| Calabria Carlo | Award | 919 | — |
| Ritchie Garth | Award | 1.02K | — |
| Lefebvre d'Ovidio Manfredi | Award | 817 | — |
| Leaver Andrew | Sale | 2.57K | $42.21K |
Short interest
Settled Sep 30, 2026
- Shares short
- 2.26M
- Days to cover
- 6.86
- % of shares outstanding
- 12.99%
- Average daily volume
- 329.38K
- Change since last report
- −7.3%
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