Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in POST held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 4.0M | $393.4M | -5.3% | 8.781% | 0.01% |
| 2 | DIMENSIONAL FUND ADVISORS LP | 3.1M | $303.7M | +3.9% | 6.778% | 0.06% |
| 3 | Route One Investment Company, L.P. | 3.0M | $291.7M | -5.9% | 6.510% | 12.77% |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2.4M | $240.4M | — | 5.365% | 0.01% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 1.9M | $185.3M | — | 4.135% | 0.00% |
| 6 | Holocene Advisors, LP | 1.8M | $174.7M | +52.6% | 3.898% | 0.42% |
| 7 | LONDON CO OF VIRGINIA | 1.5M | $146.0M | -6.9% | 3.258% | 0.90% |
| 8 | STATE STREET CORP | 1.4M | $140.6M | -4.0% | 3.138% | 0.00% |
| 9 | TWO SIGMA INVESTMENTS, LP | 1.4M | $137.6M | +91.8% | 3.071% | 0.11% |
| 10 | MANUFACTURERS LIFE INSURANCE COMPANY, THE | 1.3M | $124.9M | -5.5% | 2.788% | 0.11% |
| 11 | Clarkston Capital Partners, LLC | 1.2M | $117.9M | -58.4% | 2.632% | 9.00% |
| 12 | UBS Group AG | 1.0M | $103.2M | +68.9% | 2.304% | 0.02% |
| 13 | FMR LLC | 831K | $82.2M | -9.6% | 1.834% | 0.00% |
| 14 | DIAMOND HILL CAPITAL MANAGEMENT INC | 816K | $80.7M | -8.6% | 1.801% | 0.50% |
| 15 | GEODE CAPITAL MANAGEMENT, LLC | 807K | $79.8M | -8.4% | 1.780% | 0.00% |
| 16 | MORGAN STANLEY | 795K | $78.6M | -12.6% | 1.755% | 0.00% |
| 17 | Invesco Ltd. | 560K | $55.4M | -4.7% | 1.236% | 0.01% |
| 18 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 466K | $46.1M | -6.5% | 1.029% | 0.01% |
| 19 | Quantinno Capital Management LP | 463K | $45.7M | +41.3% | 1.021% | 0.08% |
| 20 | Fisher Asset Management, LLC | 458K | $45.3M | +89.4% | 1.012% | 0.02% |
| 21 | Point72 Asset Management, L.P. | 427K | $42.2M | +416.8% | 0.943% | 0.06% |
| 22 | Junto Capital Management LP | 408K | $40.3M | — | 0.899% | 0.86% |
| 23 | NORTHERN TRUST CORP | 389K | $38.4M | -4.3% | 0.858% | 0.01% |
| 24 | AQR CAPITAL MANAGEMENT LLC | 350K | $34.1M | +21.5% | 0.772% | 0.02% |
| 25 | PYA Waltman Capital, LLC | 329K | $32.5M | +20.8% | 0.726% | 9.02% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in POST — a direct measure of their conviction.
Filings activity in POST during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 420 | +4.2% | 96.70% | 11.50 pp | $4.08B | 11% |
| Q4 2025 | 403 | 0.7% | 108.20% | 7.37 pp | $4.57B | 6.4% |
| Q3 2025 | 406 | 4.9% | 115.57% | 8.36 pp | $4.88B | 6.7% |
| Q2 2025 | 427 | +5.2% | 123.93% | 7.30 pp | $5.23B | 5.6% |
| Q1 2025 | 406 | +0.7% | 131.23% | +2.34 pp | $5.54B | +1.8% |
| Q4 2024 | 403 | +1.8% | 128.89% | +1.25 pp | $5.44B | +1.0% |
| Q3 2024 | 396 | +5.3% | 127.64% | +9.95 pp | $5.39B | +8.5% |
| Q2 2024 | 376 | — | 117.69% | — | $4.97B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying POST stock.
Based on Q1 2026 13F filings, institutional ownership of Post Holdings, Inc. stands at 96.7%, held across 420 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of POST, with approximately 3,979,802 shares worth $0.39B as of Q1 2026.
Yes — 3 widely-followed marquee investors appear among the top 25 institutional holders of POST, including TWO SIGMA INVESTMENTS, LP, Fisher Asset Management, LLC, Point72 Asset Management, L.P..
Our composite Smart Money Score for POST is 53 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
73 institutions opened new positions in POST during Q1 2026, while 56 fully exited. 127 added to existing positions and 212 trimmed.
POST institutional ownership fell by 11.50 percentage points quarter-over-quarter, with a net change of +17 holders.
The top 10 institutions account for 52.4% of all reported 13F value in POST, and the top 25 account for 75.0%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Post Holdings, Inc. (POST) Institutional Ownership