ARQQ Arqit Quantum Inc.: institutional ownership and insider trading
73 funds reported holding $389M of Arqit Quantum Inc. in their latest 13F filings; in Q2 2026 funds net bought $262M, with 21 new positions and 10 funds selling out; over the last 12 months insiders bought $0 and sold $2.88M on the open market.
Famous investors holding ARQQ
- Ken Griffin (Citadel Advisors): $4.90M, 0.0% of the portfolio
- Izzy Englander (Millennium Management): $2.34M, 0.0% of the portfolio
Largest institutional holders of ARQQ
- Penserra Capital Management LLC — $151M
- Defiance ETFs, LLC — $147M
- UBS Group AG (UBS) — $15.5M
- SUSQUEHANNA INTERNATIONAL GROUP, LLP — $9.23M
- JANE STREET GROUP, LLC — $8.71M
- Legal & General Group Plc — $8.15M
- NATIONAL BANK OF CANADA /FI/ — $6.30M
- MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. — $5.59M
- CITADEL ADVISORS LLC — $4.90M
- Crawford Fund Management, LLC — $4.40M
Recent ARQQ insider trades
- Oct 13, 2026: Leaver Andrew sold 2,573 shares ($42.2K)
- Oct 6, 2026: Leaver Andrew sold 2,398 shares ($58.0K)
- Oct 6, 2026: Feenan Paul sold 504 shares ($12.2K)
- Oct 6, 2026: Willcocks Patrick sold 555 shares ($13.4K)
5%+ owners
- Manfredi Lefebvre d'Ovidio: 38.6% (Schedule 13D/A, filed May 26, 2026)
- Notion Capital III LP: 10.0% (Schedule 13G/A, filed Sep 10, 2026)
Who owns the most ARQQ stock?
The largest institutional holders of Arqit Quantum Inc. in the latest 13F filings are Penserra Capital Management LLC ($151M), Defiance ETFs, LLC ($147M), UBS Group AG (UBS) ($15.5M).
Are insiders buying or selling ARQQ?
Over the last 12 months insiders bought $0 and sold $2.88M of Arqit Quantum Inc. stock on the open market (SEC Form 4).
Which famous investors own ARQQ?
Ken Griffin, Izzy Englander.
Which ETFs hold ARQQ?
2 ETFs and mutual funds hold it among their top 100 positions, including BUG, GARY.