POST · Insider trading · 13F holders · Congress trades
Post Holdings, Inc. (POST)
Who is buying and selling POST: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 13
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $32.3M
- Congress trades, 12 months
- 9
POST at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 1 POST insider filed 1 sale worth $32.3M on SEC Form 4, and no open-market purchases.
- 13 13F filers hold POST among their 50 largest positions, worth $529.1M combined. The biggest bets by portfolio weight are H Squared Management LP (12.2%), Route One Investment Company, L.P. (10.8%) and Clarkston Capital Partners, LLC (9.0%). In their latest 13Fs, 1 manager opened a new position and 3 added to one.
- Members of Congress have disclosed 9 POST trades since 2020, 5 purchases and 4 sales in the past year; the latest was Cynthia Axne (D-IA), buying $1K–15K on Sep 11, 2020.
- POST last closed at $81.65 on Oct 29, 2026.
POST insider trading
Between Aug 1, 2026 and Oct 29, 2026, 1 POST insider filed 1 sale worth $32.3M on SEC Form 4, and no open-market purchases.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Sep 3, 2026 | Stiritz William P | Chairman Emeritus | Sale | 384,132 | $84.06 | $32.3M | SEC |
Who owns POST? Hedge funds and superinvestors
13 13F filers hold POST among their 50 largest positions, worth $529.1M combined. The biggest bets by portfolio weight are H Squared Management LP (12.2%), Route One Investment Company, L.P. (10.8%) and Clarkston Capital Partners, LLC (9.0%). In their latest 13Fs, 1 manager opened a new position and 3 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Route One Investment Company, L.P.Hedge fund | 10.8% | $260.4M | 2,950,568 | +0.0% shares | Q2 2026 |
| Clarkston Capital Partners, LLCAsset manager | 9.0% | $106.4M | 1,205,915 | +1.1% shares | Q2 2026 |
| Junto Capital Management LPHedge fund | 1.0% | $52.0M | 589,457 | — | Q2 2026 |
| PYA Waltman Capital, LLCWealth manager | 7.1% | $30.0M | 339,643 | +3.2% shares | Q2 2026 |
| Iridian Asset Management Llc/ctAsset manager | 7.1% | $19.6M | 268,652 | +19.5% shares | Q3 2026 |
| H Squared Management LPHedge fund | 12.2% | $19.1M | 216,387 | +8.0% shares | Q2 2026 |
| Wallace Capital Management Inc.Wealth manager | 1.8% | $16.5M | 186,530 | +57.9% shares | Q2 2026 |
| Soapstone Management L.P.Hedge fund | 7.0% | $9.6M | 108,750 | New | Q2 2026 |
| Knightsbridge Asset Management, LLCWealth manager | 1.1% | $7.8M | 78,486 | — | Q2 2026 |
| Cohen Capital Management, Inc.Wealth manager | 0.8% | $5.6M | 76,908 | +0.0% shares | Q3 2026 |
| Daytona Street Capital LLCWealth manager | 1.1% | $1.6M | 21,484 | +2.8% shares | Q3 2026 |
| Warberg Asset Management LLCHedge fund | 0.4% | $397K | 4,500 | +0.0% shares | Q2 2026 |
| Clarity Wealth Development LLCWealth manager | 0.1% | $219K | 3,000 | +0.0% shares | Q3 2026 |
Each manager counts with its latest 13F (Q3 2026: 4, Q2 2026: 9). Screen POST in the grand portfolio →
POST stock trades by members of Congress
Members of Congress have disclosed 9 POST trades since 2020, 5 purchases and 4 sales in the past year; the latest was Cynthia Axne (D-IA), buying $1K–15K on Sep 11, 2020.
| Filed | Member | Trade | Amount | Traded | Since |
|---|---|---|---|---|---|
| Oct 8, 2021 | Cynthia AxneD-IA · House | Buy | $1K–15K | Sep 11, 2020 | +52.8% |
| Oct 8, 2021 | Cynthia AxneD-IA · House | Buy | $1K–15K | Sep 11, 2020 | +52.8% |
| Oct 8, 2021 | Cynthia AxneD-IA · House | Buy | $1K–15K | Sep 11, 2020 | +52.8% |
| Aug 26, 2021 | Tom MalinowskiD-NJ · House | Sale | $15K–50K | Nov 29, 2019 | +20.2% |
| Aug 26, 2021 | Tom MalinowskiD-NJ · House | Sale | $1K–15K | Feb 5, 2019 | +31.7% |
| Aug 26, 2021 | Tom MalinowskiD-NJ · House | Sale | $1K–15K | Jan 28, 2019 | +37.0% |
| Jul 9, 2021 | Tom MalinowskiD-NJ · House | Sale | $15K–50K | Oct 29, 2019 | +21.6% |
| Jul 9, 2021 | Tom MalinowskiD-NJ · House | Buy | $15K–50K | Oct 25, 2019 | +25.0% |
| Mar 5, 2021 | Tom MalinowskiD-NJ · House | Buy | $15K–50K | Mar 10, 2020 | +34.3% |
2 members have traded POST: Cynthia Axne, Tom Malinowski.
POST questions and answers
Are insiders buying POST stock?
Between Aug 1, 2026 and Oct 29, 2026, 1 POST insider filed 1 sale worth $32.3M on SEC Form 4, and no open-market purchases.
Which hedge funds own POST?
13 13F filers hold POST among their 50 largest positions, worth $529.1M combined. The biggest bets by portfolio weight are H Squared Management LP (12.2%), Route One Investment Company, L.P. (10.8%) and Clarkston Capital Partners, LLC (9.0%). In their latest 13Fs, 1 manager opened a new position and 3 added to one.
Has Congress traded POST?
Members of Congress have disclosed 9 POST trades since 2020, 5 purchases and 4 sales in the past year; the latest was Cynthia Axne (D-IA), buying $1K–15K on Sep 11, 2020.
Who is the largest holder of POST?
Among 13F filers, Route One Investment Company, L.P. reports the largest POST position, $260.4M (2,950,568 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is H Squared Management LP's: 12.2% of its portfolio.
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