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 MNTS
| 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 |
|---|---|---|---|---|---|---|
| Aug 14, 2026 | SCHEDULE 13G/A (amended) | MNTS Momentus Inc. | Kenneth Griffin | 309,865 | 1.6% | SCHEDULE 13G/A ↗ |
| Aug 14, 2026 | SCHEDULE 13G/A (amended) | MNTS Momentus Inc. | Citadel Securities GP LLC | 61,499 | 0.3% | SCHEDULE 13G/A ↗ |
| Aug 14, 2026 | SCHEDULE 13G/A (amended) | MNTS Momentus Inc. | Citadel Securities Group LP | 61,499 | 0.3% | SCHEDULE 13G/A ↗ |
| Aug 14, 2026 | SCHEDULE 13G/A (amended) | MNTS Momentus Inc. | Citadel Securities LLC | 61,499 | 0.3% | SCHEDULE 13G/A ↗ |
| Aug 14, 2026 | SCHEDULE 13G/A (amended) | MNTS Momentus Inc. | Citadel GP LLC | 248,366 | 1.3% | SCHEDULE 13G/A ↗ |
| Aug 14, 2026 | SCHEDULE 13G/A (amended) | MNTS Momentus Inc. | Citadel Advisors Holdings LP | 248,366 | 1.3% | SCHEDULE 13G/A ↗ |
| Aug 14, 2026 | SCHEDULE 13G/A (amended) | MNTS Momentus Inc. | Citadel Advisors LLC | 248,366 | 1.3% | SCHEDULE 13G/A ↗ |
| Aug 14, 2026 | SCHEDULE 13G/A (amended) | MNTS Momentus Inc. | Anthony A. Yoseloff | 850,000 | 4.5% | SCHEDULE 13G/A ↗ |
| Aug 14, 2026 | SCHEDULE 13G/A (amended) | MNTS Momentus Inc. | Davidson Kempner Capital Management LP | 850,000 | 4.5% | SCHEDULE 13G/A ↗ |
| Aug 14, 2026 | SCHEDULE 13G/A (amended) | MNTS Momentus Inc. | Davidson Kempner Arbitrage, Equities & Relative Value LP | 834,529 | 4.4% | SCHEDULE 13G/A ↗ |
| Aug 14, 2026 | SCHEDULE 13G/A (amended) | MNTS Momentus Inc. | M.H. Davidson & Co. | 15,471 | 0.1% | SCHEDULE 13G/A ↗ |
| May 28, 2026 | SCHEDULE 13G | MNTS Momentus Inc. | Anthony A. Yoseloff | 1.20M | 8.9% | SCHEDULE 13G ↗ |
| May 28, 2026 | SCHEDULE 13G | MNTS Momentus Inc. | Davidson Kempner Capital Management LP | 1.20M | 8.9% | SCHEDULE 13G ↗ |
| May 28, 2026 | SCHEDULE 13G | MNTS Momentus Inc. | Davidson Kempner Arbitrage, Equities & Relative Value LP | 1.18M | 8.7% | SCHEDULE 13G ↗ |
| May 28, 2026 | SCHEDULE 13G | MNTS Momentus Inc. | M.H. Davidson & Co. | 22,680 | 0.2% | SCHEDULE 13G ↗ |
| May 15, 2026 | SCHEDULE 13G | MNTS Momentus Inc. | Anthony A. Yoseloff | 0 | 0.0% | SCHEDULE 13G ↗ |
| May 15, 2026 | SCHEDULE 13G | MNTS Momentus Inc. | Davidson Kempner Capital Management LP | 0 | 0.0% | SCHEDULE 13G ↗ |
| May 15, 2026 | SCHEDULE 13G | MNTS Momentus Inc. | Davidson Kempner Arbitrage, Equities & Relative Value LP | 0 | 0.0% | SCHEDULE 13G ↗ |
| May 15, 2026 | SCHEDULE 13G | MNTS Momentus Inc. | M.H. Davidson & Co. | 0 | 0.0% | SCHEDULE 13G ↗ |
| Apr 22, 2026 | SCHEDULE 13G | MNTS Momentus Inc. | Kenneth Griffin | 635,792 | 10.0% | SCHEDULE 13G ↗ |
| Apr 22, 2026 | SCHEDULE 13G | MNTS Momentus Inc. | Citadel Securities GP LLC | 1,507 | 0.0% | SCHEDULE 13G ↗ |
| Apr 22, 2026 | SCHEDULE 13G | MNTS Momentus Inc. | Citadel Securities Group LP | 1,507 | 0.0% | SCHEDULE 13G ↗ |
| Apr 22, 2026 | SCHEDULE 13G | MNTS Momentus Inc. | Citadel Securities LLC | 1,507 | 0.0% | SCHEDULE 13G ↗ |
| Apr 22, 2026 | SCHEDULE 13G | MNTS Momentus Inc. | Citadel GP LLC | 634,285 | 10.0% | SCHEDULE 13G ↗ |
| Apr 22, 2026 | SCHEDULE 13G | MNTS Momentus Inc. | Citadel Advisors Holdings LP | 634,285 | 10.0% | SCHEDULE 13G ↗ |
| Apr 22, 2026 | SCHEDULE 13G | MNTS Momentus Inc. | Citadel Advisors LLC | 634,285 | 10.0% | SCHEDULE 13G ↗ |
| Aug 14, 2025 | SCHEDULE 13G/A (amended) | MNTS Momentus Inc. | Steven Boyd | 209,340 | 5.0% | SCHEDULE 13G/A ↗ |
| Aug 14, 2025 | SCHEDULE 13G/A (amended) | MNTS Momentus Inc. | Armistice Capital, LLC | 209,340 | 5.0% | SCHEDULE 13G/A ↗ |
| May 15, 2025 | SCHEDULE 13G/A (amended) | MNTS Momentus Inc. | Steven Boyd | 500,958 | 10.0% | SCHEDULE 13G/A ↗ |
| May 15, 2025 | SCHEDULE 13G/A (amended) | MNTS Momentus Inc. | Armistice Capital, LLC | 500,958 | 10.0% | SCHEDULE 13G/A ↗ |
| Feb 14, 2025 | SCHEDULE 13G/A (amended) | MNTS Momentus Inc. | Steven Boyd | 179,458 | 10.0% | SCHEDULE 13G/A ↗ |
| Feb 14, 2025 | SCHEDULE 13G/A (amended) | MNTS Momentus Inc. | Armistice Capital, LLC | 179,458 | 10.0% | SCHEDULE 13G/A ↗ |
32 items, most recent first (up to 50). Every row links to its original filing. Updated Nov 15, 2026, 6:30 PM EST.
Download CSV The rows of this feed, with the filters above. A download holds at most 10,000 rows; narrow the filters to get a smaller slice.
Other feeds: Congressional trades · Executive-branch trades · Bills in Congress · Roll-call votes · Corporate PAC donations · Lobbying · Capitol Hires · Lobbying and contracts · Government contracts · Insider trades · Planned insider sales · Executive pay · Institutional holdings (13F) · Short interest · Fails to deliver · Daily short volume · Wikipedia page views · App store ratings · H-1B visa applications · Stock splits · 8-K events · IPO filings · Deals · Private placements (Form D) · Merger clearances (HSR) · Layoff notices (WARN) · SEC enforcement · Patents · Clinical trial updates · FDA approvals and clearances