Feeds › Ownership stakes (13D / 13G)
Ownership stakes (13D / 13G)
Investors who own more than 5% of a company, from activists (13D) to passive holders (13G).
About this data
- What it is
- An investor who owns more than 5% of a public company must say so. Investors who may try to influence the company, such as activists, file the longer Schedule 13D; passive holders file the shorter Schedule 13G.
- Who files it
- The investor, within days of crossing 5%, and again whenever the stake changes materially.
- How current
- We collect new filings throughout the day on SEC business days.
- Worth knowing
- 13G filings are far more common than 13D. A 13D usually means the investor intends to push for changes, so it tends to get more attention.
All of this comes from public filings.
Source and freshness · Information, not investment advice (disclaimer).
Filings per day, last 30 days
13D (activist) 13G (passive)
Latest ownership filings
Showing: ticker HQ
| Filed | ScheduleBoth report a stake of more than 5%. A 13D is filed by investors who may try to influence the company, such as activists; a 13G by passive holders. | Company | Investor | Shares | % of shares | Filing |
|---|---|---|---|---|---|---|
| Nov 5, 2026 | SCHEDULE 13D/A (amended) | HQ Horizon Quantum Holdings Ltd. | dMY Squared Sponsor, LLC | 0 | 0.0% | SCHEDULE 13D/A ↗ |
| Nov 5, 2026 | SCHEDULE 13D/A (amended) | HQ Horizon Quantum Holdings Ltd. | Harry L. You | 2.66M | 7.4% | SCHEDULE 13D/A ↗ |
| Aug 14, 2026 | SCHEDULE 13G/A (amended) | HQ Horizon Quantum Holdings Ltd. | THL A12 Limited | 3.80M | 11.1% | SCHEDULE 13G/A ↗ |
| Aug 14, 2026 | SCHEDULE 13G/A (amended) | HQ Horizon Quantum Holdings Ltd. | Tencent Holdings Ltd | 3.80M | 11.1% | SCHEDULE 13G/A ↗ |
| Jul 9, 2026 | SCHEDULE 13D | HQ Horizon Quantum Holdings Ltd. | Peak XV Partners Seed Management I Ltd | 6.47M | 20.3% | SCHEDULE 13D ↗ |
| Jul 9, 2026 | SCHEDULE 13D | HQ Horizon Quantum Holdings Ltd. | Peak XV Partners Principals Seed Fund I Ltd | 6.47M | 20.3% | SCHEDULE 13D ↗ |
| Jul 9, 2026 | SCHEDULE 13D | HQ Horizon Quantum Holdings Ltd. | Peak XV Partners Seed Fund I Ltd | 6.47M | 20.3% | SCHEDULE 13D ↗ |
| Jul 9, 2026 | SCHEDULE 13D | HQ Horizon Quantum Holdings Ltd. | Peak XV Partners Seed Investment | 6.47M | 20.3% | SCHEDULE 13D ↗ |
| Jun 25, 2026 | SCHEDULE 13G | HQ Horizon Quantum Holdings Ltd. | Israel A. Englander | 20,632 | 0.1% | SCHEDULE 13G ↗ |
| Jun 25, 2026 | SCHEDULE 13G | HQ Horizon Quantum Holdings Ltd. | Millennium Group Management LLC | 20,632 | 0.1% | SCHEDULE 13G ↗ |
| Jun 25, 2026 | SCHEDULE 13G | HQ Horizon Quantum Holdings Ltd. | Millennium Management LLC | 20,632 | 0.1% | SCHEDULE 13G ↗ |
| Jun 25, 2026 | SCHEDULE 13G | HQ Horizon Quantum Holdings Ltd. | ICS Opportunities, Ltd. | 17,500 | 0.1% | SCHEDULE 13G ↗ |
| Apr 1, 2026 | SCHEDULE 13D | HQ Horizon Quantum Holdings Ltd. | IonQ, Inc. | 4.23M | 13.3% | SCHEDULE 13D ↗ |
| Mar 31, 2026 | SCHEDULE 13D | HQ Horizon Quantum Holdings Ltd. | Joseph Francis Fitzsimons | 19.74M | 38.3% | SCHEDULE 13D ↗ |
| Mar 25, 2026 | SCHEDULE 13G | HQ Horizon Quantum Holdings Ltd. | THL A12 Limited | 4.18M | 13.1% | SCHEDULE 13G ↗ |
| Mar 25, 2026 | SCHEDULE 13G | HQ Horizon Quantum Holdings Ltd. | Tencent Holdings Ltd | 4.18M | 13.1% | SCHEDULE 13G ↗ |
| Mar 20, 2026 | SCHEDULE 13D | HQ Horizon Quantum Holdings Ltd. | dMY Squared Sponsor, LLC | 4.05M | 11.6% | SCHEDULE 13D ↗ |
| Mar 20, 2026 | SCHEDULE 13D | HQ Horizon Quantum Holdings Ltd. | Harry L. You | 4.10M | 11.8% | SCHEDULE 13D ↗ |
18 items, most recent first (up to 50). Every row links to its original filing. Updated Nov 15, 2026, 6:45 PM EST.
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