Post Holdings, Inc.
US ˙ NYSE ˙ US7374461041

SecurityPOST / Post Holdings, Inc.
InstitutionQuantinno Capital Management LP
Latest Disclosed Ownership462,631 shares
Latest Disclosed Value $ 45,735,701
Quantinno Capital Management LP reports 41.31% increase in ownership of POST / Post Holdings, Inc.

On May 15, 2026 - Quantinno Capital Management LP filed a 13F-HR form disclosing ownership of 462,631 shares of Post Holdings, Inc. (US:POST) valued at $45,735,701 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 327,395 shares of Post Holdings, Inc.. This represents a change in shares of 41.31% during the quarter. The current value of the position is $42,099,421 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F POST HLDGS COM 737446104 462,631 135,236 41.31 45,736 41.04 0.0763
2026-02-17 2025-12-31 13F POST HLDGS COM 737446104 327,395 225,125 220.13 32,428 195.04 0.0651
2025-11-14 2025-09-30 13F POST HLDGS COM 737446104 102,270 -1,806 -1.74 10,992 -3.14 0.0300
2025-08-14 2025-06-30 13F POST HLDGS COM 737446104 104,076 14,224 15.83 11,347 8.53 0.0490
2025-05-12 2025-03-31 13F POST HLDGS COM 737446104 89,852 14,494 19.23 10,455 21.22 0.0681
2025-02-14 2024-12-31 13F POST HLDGS COM 737446104 75,358 6,161 8.90 8,625 7.69 0.0848
2024-11-14 2024-09-30 13F POST HLDGS COM 737446104 69,197 5,670 8.93 8,010 21.06 0.1041
2024-08-14 2024-06-30 13F POST HLDGS COM 737446104 63,527 16,356 34.67 6,617 31.98 0.1190
2024-05-14 2024-03-31 13F POST HLDGS COM 737446104 47,171 6,122 14.91 5,013 38.67 0.1090
2024-02-14 2023-12-31 13F POST HLDGS COM 737446104 41,049 33,416 437.78 3,615 452.75 0.1265
2023-11-14 2023-09-30 13F POST HLDGS COM 737446104 7,633 359 4.94 654 3.81 0.0298
2023-08-04 2023-06-30 13F POST HLDGS COM 737446104 7,274 -8,403 -53.60 630 -55.29 0.0360
2023-05-03 2023-03-31 13F POST HLDGS COM 737446104 15,677 -10,508 -40.13 1,409 -40.37 0.0932
2023-02-13 2022-12-31 13F POST HLDGS COM 737446104 26,185 18,939 261.37 2,363 297.81 0.1763
2022-11-08 2022-09-30 13F POST HLDGS COM 737446104 7,246 7,246 594 0.0765
2019-11-14 2019-09-30 13F POST HLDGS COM 737446104 0 -3,890 -100.00 0 -100.00
2019-08-14 2019-06-30 13F POST HLDGS COM 737446104 3,890 0 0.00 404 -5.16 0.2371
2019-05-14 2019-03-31 13F POST HLDGS COM 737446104 3,890 0 0.00 426 22.77 0.2729
2019-02-14 2018-12-31 13F POST HLDGS COM 737446104 3,890 3,890 347 0.2826
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.