Stocks › ARQQ
Arqit Quantum Inc.
ARQQ·Nasdaq·
United Kingdom·USD
United Kingdom·USD$23.43
-0.25 (-1.06%)
Close · Oct 6, 2026 · Close Prices from Tiingo.com
ARQQ
Arqit Quantum Inc. · Nasdaq
Nasdaq 100S&P 500
Filings
Default90D1Y5YALL
ARQQS&P 500 (rebased)
Congress BuyCongress SellInsider BuyInsider SellForm 1448-K ResultsLobbying
Loading price history…
Daily closes, adjusted for splits and dividends · Close Prices from Tiingo.comHover a marker, every one is a filing · move across the line for the crosshair
Congressional Trades
Recent trades of ARQQ by members of U.S. Congress · 0 on record
No congressional trades in ARQQ on record.
Whale Activity
Position changes in ARQQ reported for 2026-06-30 by 3 tracked institutional filers
- Increased2
- New0
- Held0
- Decreased0
- Closed1
- No prior filing0
| Filer | Shares | Value | Change |
|---|---|---|---|
| MILLENNIUM MANAGEMENT LLC | 78.7K | $2.3M | increased |
| BlackRock, Inc. | 6,587 | $196K | increased |
| Renaissance Technologies | 0 | $0 | closed |
KeyVex tracks a curated set of large 13F filers plus the largest positions in recent filings, so this is a sample of institutional activity, not the whole market.
Insider Trading
Net shares bought (+) or sold (−) on the open market by ARQQ insiders, by quarter · Form 4
Recent Insider Transactions
65 transactions on record · newest first
| Insider | Type | Shares | Price | Value | Date | |
|---|---|---|---|---|---|---|
| Willcocks PatrickGeneral Counsel | Sale | −70 | $24.47 | $2K | Oct 2, 2026 | Form 4 ↗ |
| Willcocks PatrickGeneral Counsel | Sale | −321 | $24.47 | $8K | Oct 2, 2026 | Form 4 ↗ |
| Willcocks PatrickGeneral Counsel | Sale | −166 | $24.47 | $4K | Oct 2, 2026 | Form 4 ↗ |
| Wilder Ben SimonChief Operating Officer | Sale | −92 | $24.47 | $2K | Oct 2, 2026 | Form 4 ↗ |
| Wilder Ben SimonChief Operating Officer | Sale | −129 | $24.47 | $3K | Oct 2, 2026 | Form 4 ↗ |
| Ritchie GarthDirector · Director | Sale | −9 | $24.47 | $220 | Oct 2, 2026 | Form 4 ↗ |
| Ritchie GarthDirector · Director | Sale | −40 | $24.47 | $979 | Oct 2, 2026 | Form 4 ↗ |
| Ritchie GarthDirector · Director | Sale | −40 | $24.47 | $979 | Oct 2, 2026 | Form 4 ↗ |
| Ritchie GarthDirector · Director | Sale | −32 | $24.47 | $783 | Oct 2, 2026 | Form 4 ↗ |
| Nilan Nicholas WilliamGeneral Manager-US | Sale | −494 | $24.47 | $12K | Oct 2, 2026 | Form 4 ↗ |
| Leaver AndrewChief Executive Officer | Sale | −2,818 | $24.47 | $69K | Oct 2, 2026 | Form 4 ↗ |
| Feenan PaulChief Revenue Officer | Sale | −74 | $24.47 | $2K | Oct 2, 2026 | Form 4 ↗ |
| Feenan PaulChief Revenue Officer | Sale | −257 | $24.47 | $6K | Oct 2, 2026 | Form 4 ↗ |
| Feenan PaulChief Revenue Officer | Sale | −175 | $24.47 | $4K | Oct 2, 2026 | Form 4 ↗ |
| Willcocks PatrickGeneral Counsel | Sale | −2,009 | $25.20 | $51K | Jul 2, 2026 | Form 4 ↗ |
| Ritchie GarthDirector · Director | Sale | −439 | $25.20 | $11K | Jul 2, 2026 | Form 4 ↗ |
| Leaver AndrewChief Executive Officer | Sale | −9,893 | $25.20 | $249K | Jul 2, 2026 | Form 4 ↗ |
| Wilder Ben SimonChief Operating Officer | Sale | −769 | $25.20 | $19K | Jul 2, 2026 | Form 4 ↗ |
| Feenan PaulChief Revenue Officer | Sale | −1,834 | $25.20 | $46K | Jul 2, 2026 | Form 4 ↗ |
| Lefebvre d'Ovidio ManfrediDirector · Director | Sale | −32.4K | $30.24 | $980K | Jul 1, 2026 | Form 4 ↗ |
Fund Holders
Mutual funds and ETFs holding ARQQ · SEC Form N-PORT
| Fund | Shares | Value | % of fund | As of |
|---|---|---|---|---|
| Global X Cybersecurity ETF GLOBAL X FUNDS | 180.0K | $3.0M | 0.25% | May 31, 2026 |
| Mango Growth ETF ADVISORS' INNER CIRCLE FUND II | 31.4K | $538K | 0.19% | Jul 31, 2026 |
Mutual funds and ETFs whose N-PORT filings list ARQQ's shares (CUSIP G0567U127), each fund at its latest report since Mar 7, 2026, largest positions first. Bonds, options and short positions are left out.
Activist & Passive Stakes
Schedule 13D / 13G beneficial-ownership filings
- Notion Capital III LPSCHEDULE 13G/A · passive (13G) · 1.8M shares10.0%
Sep 10, 2026 · ↗ - Israel A. EnglanderSCHEDULE 13G · passive (13G) · 58.6K shares0.3%
Jun 23, 2026 · ↗ - Millennium Group Management LLCSCHEDULE 13G · passive (13G) · 58.6K shares0.3%
Jun 23, 2026 · ↗ - Millennium Management LLCSCHEDULE 13G · passive (13G) · 58.6K shares0.3%
Jun 23, 2026 · ↗ - ICS Opportunities, Ltd.SCHEDULE 13G · passive (13G) · 7,800 shares0.0%
Jun 23, 2026 · ↗ - Manfredi Lefebvre d'OvidioSCHEDULE 13D/A · activist (13D) · 9.3M shares38.6%
May 26, 2026 · ↗ - M Management S.A.SCHEDULE 13D/A · activist (13D) · 9.2M shares38.4%
May 26, 2026 · ↗ - Heritage Assets SCSpSCHEDULE 13D/A · activist (13D) · 9.2M shares38.4%
May 26, 2026 · ↗
Corporate Lobbying
Estimated quarterly lobbying spending reported under the LDA, filings naming Arqit Quantum Inc. as client
No lobbying filings found naming Arqit Quantum Inc. as the client.
Government Contracts
Federal awards to Arqit Quantum Inc. · USAspending
No federal contract awards found for Arqit Quantum Inc..
U.S. Patents
Recent USPTO applications naming Arqit Quantum Inc.
No USPTO patent applications found for Arqit Quantum Inc..
Annual Financials
From ARQQ's 10-K filings · XBRL
No annual XBRL figures on record for ARQQ. KeyVex's fundamentals cover about 130 large companies so far.
Stock Splits
Every split and reverse split in the price history
- 1-for-25Reverse splitSep 25, 2024
Split dates and ratios from the price history · Close Prices from Tiingo.com
Material Events (8-K)
Corporate events filed with the SEC
No 8-K filings on record.
About Arqit Quantum Inc.
From SEC EDGAR company records
Industry (SIC 7372)Services-Prepackaged Software
SectorTechnology
HeadquartersLONDON, United Kingdom
IncorporatedE9
SEC CIK0001859690 ↗