Arqit Quantum Inc. (ARQQ) — Institutional Holders, Q2 2026
71 institutional investment managers reported a ARQQ position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $361.1M. Every filer is listed below, ranked by position value. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
ARQQ in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- Defiance ETFsAdded · +3,646,712 sh+$108.4M
- Penserra Capital ManagementAdded · +3,628,908 sh+$107.9M
- UBS Group AGAdded · +437,035 sh+$13.0M
- Legal & General Group PlcAdded · +223,307 sh+$6.6M
- NATIONAL BANK OF CANADANew · +212,000 sh+$6.3M
Biggest sellers
- MIRAE ASSET GLOBAL ETFS Ltd.Trimmed · -136,127 sh-$4.0M
- RENAISSANCE TECHNOLOGIESSold out · -41,400 sh-$1.2M
- TUDOR INVESTMENT ET ALSold out · -38,069 sh-$1.1M
- Headlands TechnologiesSold out · -12,321 sh-$366.2K
- Stonehage Fleming Financial Services LtdSold out · -11,528 sh-$342.6K
ARQQ 13F holders ranked 1–71 of 71
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | Penserra Capital Management#1 · 5,081,219 sh | 5,081,219 | $151.0M | 1.16% | +249.9% |
| 2 | Defiance ETFs#2 · 5,099,023 sh | 5,099,023 | $147.1M | 2.00% | +251.1% |
| 3 | UBS Group AG#3 · 524,666 sh | 524,666 | $15.5M | <0.01% | +498.7% |
| 4 | Legal & General Group Plc#4 · 275,939 sh | 275,939 | $8.1M | <0.01% | +424.3% |
| 5 | NATIONAL BANK OF CANADA#5 · 212,000 sh | 212,000 | $6.3M | <0.01% | New |
| 6 | MIRAE ASSET GLOBAL ETFS Ltd.#6 · 188,182 sh | 188,182 | $5.6M | <0.01% | -42.0% |
| 7 | Kessler Investment Group#7 · 153,105 sh | 153,105 | $4.6M | — | -2.8% |
| 8 | Bank of New York Mellon#8 · 99,146 sh | 99,146 | $2.9M | <0.01% | +732.3% |
| 9 | RAYMOND JAMES FINANCIAL#9 · 95,250 sh | 95,250 | $2.8M | <0.01% | +49.2% |
| 10 | MILLENNIUM MANAGEMENT#10 · 78,717 sh | 78,717 | $2.3M | <0.01% | +45.7% |
| 11 | BANK OF AMERICA#11 · 54,192 sh | 54,192 | $1.6M | <0.01% | +182.4% |
| 12 | VAN ECK ASSOCIATES#12 · 49,487 sh | 49,487 | $1.5M | <0.01% | +145.6% |
| 13 | Cetera Investment Advisers#13 · 38,198 sh | 38,198 | $1.1M | <0.01% | New |
| 14 | BANQUE PICTET & CIE SA#14 · 36,000 sh | 36,000 | $1.1M | — | 0.0% |
| 15 | Man Group plc#15 · 26,210 sh | 26,210 | $779.0K | <0.01% | New |
| 16 | SBI Securities , Ltd.#16 · 26,135 sh | 26,135 | $776.7K | — | -3.6% |
| 17 | Advisory Services Network#17 · 21,737 sh | 21,737 | $646.0K | <0.01% | 0.0% |
| 18 | Zurcher Kantonalbank (Zurich Cantonalbank)#18 · 21,296 sh | 21,296 | $632.9K | <0.01% | +113.4% |
| 19 | WELLS FARGO & COMPANY#19 · 21,291 sh | 21,291 | $632.8K | <0.01% | +41.1% |
| 20 | KKM Financial#20 · 31,394 sh | 31,394 | $537.8K | 0.07% | New |
| 21 | LPL Financial#21 · 17,109 sh | 17,109 | $508.5K | <0.01% | New |
| 22 | MORGAN STANLEY#22 · 16,276 sh | 16,276 | $483.7K | 0.00% | +73.5% |
| 23 | Toroso Investments#23 · 16,020 sh | 16,020 | $476.1K | <0.01% | New |
| 24 | CITIGROUP#24 · 14,572 sh | 14,572 | $433.1K | <0.01% | +48.0% |
| 25 | GROUP ONE TRADING, L.P.#25 · 12,682 sh | 12,682 | $376.9K | <0.01% | -5.8% |
| 26 | SIMPLEX TRADING#26 · 11,472 sh | 11,472 | $340.9K | <0.01% | New |
| 27 | ROYAL BANK OF CANADA#27 · 9,519 sh | 9,519 | $283.0K | 0.00% | +35.8% |
| 28 | GEODE CAPITAL MANAGEMENT#28 · 9,294 sh | 9,294 | $276.2K | 0.00% | New |
| 29 | HSBC PLC#29 · 8,453 sh | 8,453 | $248.8K | <0.01% | New |
| 30 | Heck Capital Advisors#30 · 7,882 sh | 7,882 | $234.3K | — | New |
| 31 | GOLDMAN SACHS GROUP#31 · 54,613 sh | 54,613 | $220.1K | 0.00% | +15.4% |
| 32 | Foundations Investment Advisors#32 · 2,953,810 sh | 2,953,810 | $211.2K | <0.01% | -2.8% |
| 33 | SLT#33 · 2,953,810 sh | 2,953,810 | $211.2K | — | -2.8% |
| 34 | McGuire Investment Group#34 · 6,928 sh | 6,928 | $205.9K | — | New |
| 35 | BlackRock#35 · 6,587 sh | 6,587 | $195.8K | 0.00% | +195.1% |
| 36 | Mirae Asset Global Investments , Ltd.#36 · 3,444 sh | 3,444 | $102.4K | <0.01% | -41.1% |
| 37 | JONES FINANCIAL COMPANIES LLLP#37 · 4,071 sh | 4,071 | $98.8K | 0.00% | +19.9% |
| 38 | OSAIC#38 · 3,465 sh | 3,465 | $95.6K | <0.01% | -73.5% |
| 39 | Center for Financial Planning#39 · 2,818 sh | 2,818 | $83.8K | — | New |
| 40 | Leonteq Securities AG#40 · 1,500 sh | 1,500 | $44.6K | <0.01% | -13.0% |
| 41 | Tower Research Capital (TRC)#41 · 1,254 sh | 1,254 | $37.3K | <0.01% | New |
| 42 | EFG International AG#42 · 1,000 sh | 1,000 | $29.8K | <0.01% | 0.0% |
| 43 | Rockefeller Capital Management L.P.#43 · 1,000 sh | 1,000 | $29.7K | 0.00% | New |
| 44 | HARBOUR INVESTMENTS#44 · 900 sh | 900 | $26.7K | <0.01% | +12.5% |
| 45 | Integrated Wealth Concepts#45 · 624 sh | 624 | $18.5K | <0.01% | New |
| 46 | SIGNATUREFD#46 · 600 sh | 600 | $17.8K | — | 0.0% |
| 47 | Steward Partners Investment Advisory#47 · 600 sh | 600 | $17.8K | <0.01% | 0.0% |
| 48 | Ameritas Advisory Services#48 · 564 sh | 564 | $16.8K | <0.01% | New |
| 49 | BNP PARIBAS FINANCIAL MARKETS#49 · 563 sh | 563 | $16.7K | 0.00% | New |
| 50 | WOLVERINE ASSET MANAGEMENT#50 · 10,818 sh | 10,818 | $15.3K | <0.01% | +186.9% |
| 51 | IFP Advisors#51 · 185 sh | 185 | $5.5K | — | -83.6% |
| 52 | HEALTHCARE OF ONTARIO PENSION PLAN FUND#52 · 73,729 sh | 73,729 | $5.3K | 0.00% | 0.0% |
| 53 | Farther Finance Advisors#53 · 172 sh | 172 | $5.1K | — | New |
| 54 | Vestcor#54 · 75,000 sh | 75,000 | $5.0K | <0.01% | 0.0% |
| 55 | Heritage Wealth Advisors#55 · 130 sh | 130 | $3.9K | <0.01% | 0.0% |
| 56 | Parallel Advisors#56 · 122 sh | 122 | $3.6K | <0.01% | -53.4% |
| 57 | JANE STREET GROUP#57 · 42,263 sh | 42,263 | $3.0K | 0.00% | -44.3% |
| 58 | Silver Rock Financial#58 · 42,139 sh | 42,139 | $3.0K | <0.01% | 0.0% |
| 59 | West Financial Advisors#59 · 100 sh | 100 | $3.0K | — | 0.0% |
| 60 | ABLE Financial Group#60 · 30,154 sh | 30,154 | $2.2K | — | New |
| 61 | Quarry#61 · 40 sh | 40 | $1.2K | <0.01% | New |
| 62 | DEUTSCHE BANK AG\#62 · 40 sh | 40 | $1.2K | 0.00% | New |
| 63 | US BANCORP \DE\#63 · 35 sh | 35 | $1.0K | 0.00% | -74.1% |
| 64 | Parkside Financial Bank#64 · 32 sh | 32 | $952.00 | — | +100.0% |
| 65 | Core Capital Management & Research#65 · 44 sh | 44 | $930.00 | <0.01% | — |
| 66 | Y.D. More Investments Ltd#66 · 8,881 sh | 8,881 | $886.00 | 0.00% | New |
| 67 | Investors Portfolio Services#67 · 28 sh | 28 | $832.00 | <0.01% | 0.0% |
| 68 | Cornerstone Financial Management#68 · 25 sh | 25 | $743.00 | <0.01% | -35.9% |
| 69 | CoreCap Advisors#69 · 16 sh | 16 | $476.00 | — | 0.0% |
| 70 | MCF Advisors#70 · 10 sh | 10 | $298.00 | 0.00% | 0.0% |
| 71 | TD Waterhouse Canada#71 · 2 sh | 2 | $57.00 | — | 0.0% |
Funds that sold out of ARQQ in Q2 2026 (10)
Held ARQQ at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| RENAISSANCE TECHNOLOGIES41,400 sh | 41,400 | $548.5K |
| TUDOR INVESTMENT ET AL38,069 sh | 38,069 | $504.4K |
| Headlands Technologies12,321 sh | 12,321 | $163.3K |
| Stonehage Fleming Financial Services Ltd11,528 sh | 11,528 | $152.7K |
| Allworth Financial1,000 sh | 1,000 | $13.3K |
| Federation des caisses Desjardins du Quebec696 sh | 696 | $9.2K |
| Quantbot Technologies444 sh | 444 | $5.9K |
| MAI Capital Management200 sh | 200 | $2.6K |
| Basecamp Wealth Advisors38 sh | 38 | $504.00 |
| Vermillion Wealth Management1 sh | 1 | $13.00 |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.