ARQQW Arqit Quantum Inc. - Warrants
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Institutional owners (13F) 12 filers · $453K total · As of June 30, 2026
Institutions that report holding this stock in their quarterly SEC Form 13F. Long positions only; a single filer may appear twice for separate option legs. Large offsetting put/call legs typically reflect market-making or hedged inventory, not directional conviction.
| New positions | Exited positions | Increased | Decreased | Net shares change |
|---|---|---|---|---|
| 1 (+1 vs prior Q) | 0 (-1 vs prior Q) | 1 (-2 vs prior Q) | 5 (+5 vs prior Q) | -153K |
Compared to Q1 2026. SEC Form 13F filings are due within 45 days of quarter-end plus a short buffer for late filers — quarters still inside that window are skipped in favor of the most recent fully-reported pair.
| Institution | Value | Shares | % of tracked 13F | Type |
|---|---|---|---|---|
| Foundations Investment Advisors, LLC | $211,197 | 2,953,810 | 46.58% | Shares |
| SLT Holdings LLC | $211,197 | 2,953,810 | 46.58% | Shares |
| MILLENNIUM MANAGEMENT LLC | $13,942 | 195,000 | 3.07% | Call option |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | $5,272 | 73,728 | 1.16% | Shares |
| GOLDMAN SACHS GROUP INC | $3,383 | 47,320 | 0.75% | Shares |
| Silver Rock Financial LP | $3,013 | 42,139 | 0.66% | Shares |
| JANE STREET GROUP, LLC | $2,388 | 33,402 | 0.53% | Shares |
| ABLE Financial Group, LLC | $2,156 | 30,154 | 0.48% | Shares |
| WOLVERINE ASSET MANAGEMENT LLC | $739 | 10,329 | 0.16% | Shares |
| UBS Group AG | $127 | 1,792 | 0.03% | Shares |
| OSAIC HOLDINGS, INC. | $18 | 250 | 0.00% | Shares |
| Vestcor Inc | $5 | 75,000 | 0.00% | Shares |
Company insiders 9 insiders · 6 officers · 3 directors
| Insider | Role | Last activity | Shares owned | Buys 12m | Sells 12m | Net 12m |
|---|---|---|---|---|---|---|
| Andrew Leaver | Chief Executive Officer | July 1, 2026 M | 51,483 | 0 | 1 | $-249,304 |
| Robert Michael Russell | Chief Financial Officer | April 1, 2026 A | — | 0 | 0 | $0 |
| Ben Simon Wilder | Chief Operating Officer | July 1, 2026 M | 3,582 | 0 | 1 | $-19,379 |
| Patrick Willcocks | General Counsel | July 1, 2026 M | 9,462 | 0 | 2 | $-168,547 |
| Paul Feenan | Chief Revenue Officer | July 1, 2026 M | 19,351 | 0 | 1 | $-46,217 |
| Jennifer Bers | Chief Revenue Officer | June 22, 2026 M | 6,712 | 0 | 1 | $-177,529 |
| Carlo Calabria | Director | July 17, 2026 M | 232,478 | 0 | 0 | $0 |
| Garth Ritchie | Director | July 17, 2026 M | 105,450 | 0 | 1 | $-11,063 |
| D'Ovidio Manfredi Lefebvre | Director | July 17, 2026 M | 49,023 | 0 | 22 | $-1,652,120 |
Insiders from SEC Form 3/4/5 filings; net = open-market P/S only
Activists & 5%+ owners 2 positions
Investors who filed SEC Schedule 13D — beneficial ownership above 5% with an intent to influence the issuer (activist stakes, board campaigns, M&A). Each row shows the most recent known state of that filer's position.
| Filer | Filed | Stake | Status | Purpose | Filing |
|---|---|---|---|---|---|
| Heritage Assets SCSp, M Management S.A., Manfredi Lefebvre d'Ovidio ×2 filings | May 26, 2026 | 38.60% | Amendment | — | SEC |
| D2BW Ltd, Bestwick David, Williams David John | Dec. 18, 2024 | 5.80% | Amendment | — | SEC |
Purpose is an automated classification of the filer's own stated purpose (SEC Item 4) — not investment advice. "—" means no clear purpose was stated or the text could not be classified.