ARQQ · Insider trading · 13F holders · Congress trades
Arqit Quantum Inc. (ARQQ)
Who is buying and selling ARQQ: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 3
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $369K
- Congress trades, 12 months
- 0
ARQQ at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 6 ARQQ insiders filed 19 sales worth $369K on SEC Form 4, and no open-market purchases.
- 3 13F filers hold ARQQ among their 50 largest positions, worth $301.5M combined. The biggest bets by portfolio weight are Defiance ETFs, LLC (2.0%), Kessler Investment Group, LLC (1.6%) and Penserra Capital Management LLC (1.2%).
- No member of Congress has disclosed a trade in ARQQ.
- ARQQ last closed at $17.60 on Oct 29, 2026.
ARQQ insider trading
Between Aug 1, 2026 and Oct 29, 2026, 6 ARQQ insiders filed 19 sales worth $369K on SEC Form 4, and no open-market purchases.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Oct 15, 2026 | Leaver Andrew | Chief Executive Officer | Sale | 2,573 | $16.40 | $42K | SEC |
| Oct 8, 2026 | Leaver Andrew | Chief Executive Officer | Sale | 2,398 | $24.19 | $58K | SEC |
| Oct 8, 2026 | Willcocks Patrick | General Counsel | Sale | 555 | $24.19 | $13K | SEC |
| Oct 8, 2026 | Feenan Paul | Chief Revenue Officer | Sale | 504 | $24.19 | $12K | SEC |
| Oct 8, 2026 | Nilan Nicholas William | General Manager-US | Sale | 493 | $24.19 | $12K | SEC |
| Oct 8, 2026 | Wilder Ben Simon | Chief Operating Officer | Sale | 218 | $24.19 | $5K | SEC |
| Oct 8, 2026 | Ritchie Garth | Director | Sale | 118 | $24.19 | $3K | SEC |
| Oct 7, 2026 | Leaver Andrew | Chief Executive Officer | Sale | 2,535 | $23.78 | $60K | SEC |
| Oct 7, 2026 | Willcocks Patrick | General Counsel | Sale | 588 | $23.78 | $14K | SEC |
| Oct 7, 2026 | Feenan Paul | Chief Revenue Officer | Sale | 533 | $23.78 | $13K | SEC |
| Oct 7, 2026 | Nilan Nicholas William | General Manager-US | Sale | 522 | $23.78 | $12K | SEC |
| Oct 7, 2026 | Wilder Ben Simon | Chief Operating Officer | Sale | 233 | $23.78 | $6K | SEC |
| Oct 7, 2026 | Ritchie Garth | Director | Sale | 127 | $23.78 | $3K | SEC |
| Oct 6, 2026 | Leaver Andrew | Chief Executive Officer | Sale | 2,818 | $24.47 | $69K | SEC |
| Oct 6, 2026 | Willcocks Patrick | General Counsel | Sale | 557 | $24.47 | $14K | SEC |
| Oct 6, 2026 | Feenan Paul | Chief Revenue Officer | Sale | 506 | $24.47 | $12K | SEC |
| Oct 6, 2026 | Nilan Nicholas William | General Manager-US | Sale | 494 | $24.47 | $12K | SEC |
| Oct 6, 2026 | Wilder Ben Simon | Chief Operating Officer | Sale | 221 | $24.47 | $5K | SEC |
| Oct 6, 2026 | Ritchie Garth | Director | Sale | 121 | $24.47 | $3K | SEC |
Who owns ARQQ? Hedge funds and superinvestors
3 13F filers hold ARQQ among their 50 largest positions, worth $301.5M combined. The biggest bets by portfolio weight are Defiance ETFs, LLC (2.0%), Kessler Investment Group, LLC (1.6%) and Penserra Capital Management LLC (1.2%).
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Penserra Capital Management LLCMutual fund manager | 1.2% | $151.0M | 5,081,219 | — | Q2 2026 |
| Defiance ETFs, LLCMutual fund manager | 2.0% | $147.1M | 5,099,023 | — | Q2 2026 |
| Kessler Investment Group, LLCWealth manager | 1.6% | $3.3M | 138,545 | -9.5% shares | Q3 2026 |
Each manager counts with its latest 13F (Q3 2026: 1, Q2 2026: 2). Screen ARQQ in the grand portfolio →
ARQQ stock trades by members of Congress
No member of Congress has disclosed a trade in ARQQ.
ARQQ questions and answers
Are insiders buying ARQQ stock?
Between Aug 1, 2026 and Oct 29, 2026, 6 ARQQ insiders filed 19 sales worth $369K on SEC Form 4, and no open-market purchases.
Which hedge funds own ARQQ?
3 13F filers hold ARQQ among their 50 largest positions, worth $301.5M combined. The biggest bets by portfolio weight are Defiance ETFs, LLC (2.0%), Kessler Investment Group, LLC (1.6%) and Penserra Capital Management LLC (1.2%).
Has Congress traded ARQQ?
No member of Congress has disclosed a trade in ARQQ.
Who is the largest holder of ARQQ?
Among 13F filers, Penserra Capital Management LLC reports the largest ARQQ position, $151.0M (5,081,219 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Defiance ETFs, LLC's: 2.0% of its portfolio.
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