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POST

Post Holdings, Inc.

Company with tickers: POST

CIK
1530950
CUSIP
737446104
Shares Outstanding
45,322,586
13F Activity (30d)
228 filings 225 filers

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 425
Total Value: $4,513,727,619
Total Shares: 45,657,778
Showing 1–100 of 433 holdings by value · page 1 of 5

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 425 13F filers · Δ vs Dec 31, 2025
Top Holder
8.7%
Jun 2023 → Mar 2026 · range 8.7% – 11.4%
−2.1 pts
Top 5
33.1%
Jun 2023 → Mar 2026 · range 33.1% – 40.7%
−5.4 pts
Top 10
50.4%
Jun 2023 → Mar 2026 · range 50.4% – 60.3%
−5.6 pts
HHI
338
Jun 2023 → Mar 2026 · range 338 – 470
Broadly held−86

Quarterly Activity

vs Dec 31, 2025
New
71
Increased
131
Decreased
155
Sold Out
56
Unchanged
68
Holder count: +15
Institutional value: -5.0%
Shares held: -4.9%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Showing 100 of 433
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Holder Value (USD) % of 13F Shares Open