Arqit Quantum (ARQQ): which funds own it
A 13F shows the portfolio at quarter-end and is filed up to 45 days later: these are not real-time positions and they may have changed.
Sections with a free account
No concentrated manager holds it.
Who owns Arqit Quantum?
Holders that filed a Schedule 13D or 13G with the SEC for owning more than 5% of the shares: Heritage Assets SCSp (13D/A filed Nov 12, 2025), Manfredi Lefebvre d'Ovidio (13D/A filed May 26, 2026) and Notion Capital III (13G/A filed Sep 10, 2026). As of Jun 30, 2026, the largest holders reported on Form 13F were Defiance ETFs (5.1 million shares), Penserra Capital Management (5.1 million shares) and UBS Group (522,874 shares).
Which institutions hold the most Arqit Quantum shares?
Per Form 13F filings as of Jun 30, 2026:
- 1. Defiance ETFs: 5.1 million shares
- 2. Penserra Capital Management: 5.1 million shares
- 3. UBS Group: 522,874 shares
- 4. Legal & General Group: 275,939 shares
- 5. National Bank of Canada: 212,000 shares
- 6. Mirae Asset Global Etfs Holdings: 188,182 shares
- 7. Kessler Investment Group: 153,105 shares
- 8. Bank of New York Mellon: 99,146 shares
- 9. Raymond James Financial: 95,250 shares
- 10. Millennium Management: 78,717 shares
Sources:13D/A by Heritage Assets SCSp (Nov 12, 2025) ↗13D/A by Manfredi Lefebvre d'Ovidio (May 26, 2026) ↗13G/A by Notion Capital III (Sep 10, 2026) ↗All of the company's proxy statements on EDGAR ↗
We hold 13D and 13G filings made since Dec 23, 2024: a holder above 5% that has not filed since then does not appear here.
Arqit Quantum revenue
Arqit Quantum reported annual revenue of $293,000 for fiscal year 2024 (year ended September 30, 2024), according to its Form 20-F filed with the SEC (XBRL data).
Quarter flow (concentrated managers)
Concentrated managers holding it
None in the latest quarter.
Largest holders of ARQQ (all 13F filers)
- Defiance ETFs5.1 MType not verified+3.6 M
- Penserra Capital Management5.1 MType not verified+3.6 M
- UBS Group523 KBank or trading desk+437 K
- Legal & General Group276 KIndex manager+223 K
- National Bank of Canada212 KBank or trading desk+211 K
- Mirae Asset Global Etfs Holdings188 KIndex manager−136 K
- Kessler Investment Group153 KType not verified−4,464
- Bank of New York Mellon99 KBank or trading desk+87 K
- Raymond James Financial95 KWealth adviser+31 K
- Millennium Management79 KQuant or multi-manager+25 K
- Shares
- 5.1 M
- Change
- +3.6 M
See more
- Type
- Type not verified
- Value
- $147M
- Shares
- 5.1 M
- Change
- +3.6 M
See more
- Type
- Type not verified
- Value
- $151M
- Shares
- 523 K
- Change
- +437 K
See more
- Type
- Bank or trading desk
- Value
- $15.5M
- Shares
- 276 K
- Change
- +223 K
See more
- Type
- Index manager
- Value
- $8.1M
- Shares
- 212 K
- Change
- +211 K
See more
- Type
- Bank or trading desk
- Value
- $6.3M
- Shares
- 188 K
- Change
- −136 K
See more
- Type
- Index manager
- Value
- $5.6M
- Kessler Investment Group
- Shares
- 153 K
- Change
- −4,464
See more
- Type
- Type not verified
- Value
- $4.6M
- Shares
- 99 K
- Change
- +87 K
See more
- Type
- Bank or trading desk
- Value
- $2.9M
- Shares
- 95 K
- Change
- +31 K
See more
- Type
- Wealth adviser
- Value
- $2.8M
- Shares
- 79 K
- Change
- +25 K
See more
- Type
- Quant or multi-manager
- Value
- $2.3M
The 10 13F filers with the most shares as of Jun 30, 2026, whatever their type (index firms usually come first). “Change”: shares added or cut versus the previous quarter, split-adjusted; “no data” = there is no comparable portfolio for the previous quarter (no filing, or a filing with its holdings under confidential treatment). “% of the company” only where shares outstanding are up to date. Entities of the same group file separately and some 13F filings include other managers: there may be double counting. With a free account: the top 25, the largest buyers and the largest sellers.
Insiders (Form 4)
10% owners who bought (6 m): 0
Open-market purchases, excluding 10b5-1 plans. Officers and directors only; joint filers of the same purchase count as one. 10% owners with no role are shown separately. 0 = nobody bought; “no data” = we do not have its Form 4 filings.
Each of the company's Form 4 filings, on EDGAR ↗Latest trades, with date and filing →
Above 5% (13D/13G)
Disclosed stakes, with their amendments. A filing is not always a purchase: there are also reductions and changes of filing entity.
This list may be incomplete: we hold 13D and 13G filings made since Dec 23, 2024. A holder above 5% that has not filed anything since then is not shown here.
Above 5% over time (13D/13G)
Each holder with its filings in order. History since December 2024.
This company filed no 8-K forms in the last year. Foreign companies listed in the US (ADRs) report material events on forms 6-K and 20-F, and ETFs and funds do not file 8-Ks. If it is a foreign company listed in the US through ADRs (American Depositary Receipts), what trades are bank-issued certificates that represent shares from its home market. See its filings on EDGAR ↗
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