Post Holdings, Inc. (POST) ownership: Top institutional holder: VANGUARD GROUP INC ($512.34M). Insider activity: Net Seller (0 buys, 20 sells). 8 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| VANGUARD GROUP INC | 5172519.00 | $512.34M | 2025-12-31 |
| BlackRock, Inc. | 3979802.00 | $393.44M | 2026-03-31 |
| DIMENSIONAL FUND ADVISORS LP | 3071875.00 | $303.68M | 2026-03-31 |
| Route One Investment Company, L.P. | 2950568.00 | $291.69M | 2026-03-31 |
| JPMORGAN CHASE & CO | 2668814.00 | $259.41M | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2431497.00 | $240.38M | 2026-03-31 |
| BlackRock Fund Advisors | 2474650.00 | $198.94M | 2016-12-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 1874037.00 | $185.27M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-05-13 | |
| Sell | null | 2026-04-30 | |
| Sell | null | 2026-04-30 | |
| Sell | null | 2026-04-30 | |
| Sell | null | 2026-04-30 | |
| Sell | null | 2026-04-30 | |
| Sell | null | 2026-04-30 | |
| Sell | null | 2026-04-30 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.