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 POST
| 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 |
|---|---|---|---|---|---|---|
| Oct 30, 2026 | SCHEDULE 13G | POST Post Holdings, Inc. | Vanguard Portfolio Management | 2.24M | 5.1% | SCHEDULE 13G ↗ |
| Jul 31, 2026 | SCHEDULE 13G/A (amended) | POST Post Holdings, Inc. | Vanguard Portfolio Management | 2.21M | 4.9% | SCHEDULE 13G/A ↗ |
| May 14, 2026 | SCHEDULE 13G/A (amended) | POST Post Holdings, Inc. | Jason E. Moment | 2.95M | 6.5% | SCHEDULE 13G/A ↗ |
| May 14, 2026 | SCHEDULE 13G/A (amended) | POST Post Holdings, Inc. | William F. Duhamel, Jr. | 2.95M | 6.5% | SCHEDULE 13G/A ↗ |
| May 14, 2026 | SCHEDULE 13G/A (amended) | POST Post Holdings, Inc. | Route One Investment Company, LLC | 2.95M | 6.5% | SCHEDULE 13G/A ↗ |
| May 14, 2026 | SCHEDULE 13G/A (amended) | POST Post Holdings, Inc. | Roic, LLC | 2.95M | 6.5% | SCHEDULE 13G/A ↗ |
| May 14, 2026 | SCHEDULE 13G/A (amended) | POST Post Holdings, Inc. | Route One Investment Company, L.P. | 2.95M | 6.5% | SCHEDULE 13G/A ↗ |
| May 14, 2026 | SCHEDULE 13G/A (amended) | POST Post Holdings, Inc. | Gerald W. Hakala | 1.19M | 2.6% | SCHEDULE 13G/A ↗ |
| May 14, 2026 | SCHEDULE 13G/A (amended) | POST Post Holdings, Inc. | Jeffrey A. Hakala | 1.19M | 2.6% | SCHEDULE 13G/A ↗ |
| May 14, 2026 | SCHEDULE 13G/A (amended) | POST Post Holdings, Inc. | Clarkston Companies, Inc. | 1.19M | 2.6% | SCHEDULE 13G/A ↗ |
| May 14, 2026 | SCHEDULE 13G/A (amended) | POST Post Holdings, Inc. | Clarkston Capital Partners, LLC | 1.19M | 2.6% | SCHEDULE 13G/A ↗ |
| Apr 29, 2026 | SCHEDULE 13G | POST Post Holdings, Inc. | Vanguard Portfolio Management | 2.46M | 5.1% | SCHEDULE 13G ↗ |
| Apr 9, 2026 | SCHEDULE 13G/A (amended) | POST Post Holdings, Inc. | Dimensional Fund Advisors LP | 3.07M | 6.4% | SCHEDULE 13G/A ↗ |
| Mar 27, 2026 | SCHEDULE 13G/A (amended) | POST Post Holdings, Inc. | The Vanguard Group | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Mar 5, 2026 | SCHEDULE 13D/A (amended) | POST Post Holdings, Inc. | William P. Stiritz | 4.89M | 10.3% | SCHEDULE 13D/A ↗ |
| Oct 31, 2025 | SCHEDULE 13G | POST Post Holdings, Inc. | JPMorgan Chase & Co. | 2.79M | 5.1% | SCHEDULE 13G ↗ |
| Oct 15, 2025 | SCHEDULE 13D/A (amended) | POST Post Holdings, Inc. | William P. Stiritz | 4.88M | 9.3% | SCHEDULE 13D/A ↗ |
| Oct 9, 2025 | SCHEDULE 13G | POST Post Holdings, Inc. | Dimensional Fund Advisors LP | 2.81M | 5.2% | SCHEDULE 13G ↗ |
| Sep 8, 2025 | SCHEDULE 13G/A (amended) | POST Post Holdings, Inc. | The Vanguard Group | 5.60M | 10.3% | SCHEDULE 13G/A ↗ |
| Aug 13, 2025 | SCHEDULE 13G/A (amended) | POST Post Holdings, Inc. | Jason E. Moment | 3.41M | 6.1% | SCHEDULE 13G/A ↗ |
| Aug 13, 2025 | SCHEDULE 13G/A (amended) | POST Post Holdings, Inc. | William F. Duhamel, Jr. | 3.41M | 6.1% | SCHEDULE 13G/A ↗ |
| Aug 13, 2025 | SCHEDULE 13G/A (amended) | POST Post Holdings, Inc. | Route One Offshore Master Fund, L.P. | 2.35M | 4.2% | SCHEDULE 13G/A ↗ |
| Aug 13, 2025 | SCHEDULE 13G/A (amended) | POST Post Holdings, Inc. | Route One Investment Company, LLC | 3.41M | 6.1% | SCHEDULE 13G/A ↗ |
| Aug 13, 2025 | SCHEDULE 13G/A (amended) | POST Post Holdings, Inc. | Roic, LLC | 3.41M | 6.1% | SCHEDULE 13G/A ↗ |
| Aug 13, 2025 | SCHEDULE 13G/A (amended) | POST Post Holdings, Inc. | Route One Investment Company, L.P. | 3.41M | 6.1% | SCHEDULE 13G/A ↗ |
| Jul 15, 2025 | SCHEDULE 13G/A (amended) | POST Post Holdings, Inc. | Dimensional Fund Advisors LP | 2.70M | 4.8% | SCHEDULE 13G/A ↗ |
| Apr 30, 2025 | SCHEDULE 13G/A (amended) | POST Post Holdings, Inc. | The Vanguard Group | 5.42M | 9.6% | SCHEDULE 13G/A ↗ |
| Feb 14, 2025 | SCHEDULE 13D/A (amended) | POST Post Holdings, Inc. | William P. Stiritz | 4.66M | 8.3% | SCHEDULE 13D/A ↗ |
28 items, most recent first (up to 50). Every row links to its original filing. Updated Nov 15, 2026, 5:52 PM EST.
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