Post Holdings, Inc.
US ˙ NYSE ˙ US7374461041

SecurityPOST / Post Holdings, Inc.
InstitutionBrown Advisory Inc
Latest Disclosed Ownership8,373 shares
Latest Disclosed Value $ 827,755
Brown Advisory Inc reports 4.31% increase in ownership of POST / Post Holdings, Inc.

On May 15, 2026 - Brown Advisory Inc filed a 13F-HR form disclosing ownership of 8,373 shares of Post Holdings, Inc. (US:POST) valued at $827,755 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 8,027 shares of Post Holdings, Inc.. This represents a change in shares of 4.31% during the quarter. The current value of the position is $761,943 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.

Upgrade to unlock premium data and export to Excel .

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 8,373 346 4.31 828 4.03 0.0014
2026-02-13 2025-12-31 13F POST HLDGS COM 737446104 8,027 -2,470 -23.53 795 -29.52 0.0011
2025-11-14 2025-09-30 13F POST HLDGS COM 737446104 10,497 2,184 26.27 1,128 24.50 0.0015
2025-08-13 2025-06-30 13F POST HLDGS COM 737446104 8,313 -8,308 -49.98 906 -53.15 0.0012
2025-04-30 2025-03-31 13F POST HLDGS COM 737446104 16,621 2,069 14.22 1,934 16.16 0.0028
2025-02-14 2024-12-31 13F POST HLDGS COM 737446104 14,552 5,227 56.05 1,666 54.31 0.0021
2024-11-13 2024-09-30 13F POST HLDGS COM 737446104 9,325 -100 -1.06 1,079 9.99 0.0014
2024-08-14 2024-06-30 13F POST HLDGS COM 737446104 9,425 -16,750 -63.99 982 -64.72 0.0013
2024-04-24 2024-03-31 13F POST HLDGS COM 737446104 26,175 3,480 15.33 2,782 39.19 0.0037
2024-02-08 2023-12-31 13F POST HLDGS COM 737446104 22,695 -60 -0.26 1,999 2.41 0.0028
2023-10-25 2023-09-30 13F POST HLDGS COM 737446104 22,755 1,014 4.66 1,951 3.61 0.0032
2023-07-31 2023-06-30 13F POST HLDGS COM 737446104 21,741 12,351 131.53 1,884 123.37 0.0029
2023-05-08 2023-03-31 13F POST HLDGS COM 737446104 9,390 0 0.00 844 -0.47 0.0014
2023-02-13 2022-12-31 13F POST HLDGS COM 737446104 9,390 0 0.00 848 10.14 0.0016
2022-11-14 2022-09-30 13F POST HLDGS COM 737446104 9,390 -1 -0.01 769 -0.52 0.0015
2022-11-14 2022-06-30 13F/A-2 POST HLDGS COM 737446104 9,391 1 0.01 773 18.92 0.0015
2022-09-13 2022-06-30 13F/A-1 POST HLDGS COM 737446104 17,291 1 1,424 0.0025
2022-11-14 2022-03-31 13F/A-2 POST HLDGS COM 737446104 9,390 9,390 650 0.0010
2022-09-13 2022-03-31 13F/A-1 POST HLDGS COM 737446104 17,290 17,290 1,197 0.0017
2021-02-12 2020-12-31 13F POST HLDGS COM 737446104 0 -2,555 -100.00 0 -100.00
2020-11-16 2020-09-30 13F POST HLDGS COM 737446104 2,555 -3,870 -60.23 219 -61.10 0.0005
2020-08-14 2020-06-30 13F POST HLDGS COM 737446104 6,425 -725 -10.14 563 -5.06 0.0013
2020-05-15 2020-03-31 13F POST HLDGS COM 737446104 7,150 0 0.00 593 -23.97 0.0018
2020-02-14 2019-12-31 13F POST HLDGS COM 737446104 7,150 -150 -2.05 780 1.04 0.0020
2019-11-14 2019-09-30 13F POST HLDGS COM 737446104 7,300 0 0.00 772 1.71 0.0022
2019-08-12 2019-06-30 13F POST HLDGS COM 737446104 7,300 -19,125 -72.37 759 -73.75 0.0022
2019-05-15 2019-03-31 13F POST HLDGS COM 737446104 26,425 2,925 12.45 2,891 38.00 0.0082
2019-02-13 2018-12-31 13F POST HLDGS COM 737446104 23,500 2,750 13.25 2,095 3.00 0.0070
2018-11-13 2018-09-30 13F POST HLDGS COM 737446104 20,750 7,325 54.56 2,034 76.10 0.0058
2018-08-10 2018-06-30 13F POST HLDGS COM 737446104 13,425 9,425 235.62 1,155 281.19 0.0036
2018-06-28 2018-03-31 13F/A-1 POST HLDGS COM 737446104 4,000 -6,323 -61.25 303 -62.96 0.0010
2018-05-14 2018-03-31 13F POST HLDGS COM 737446104 4,000 -6,323 303
2018-02-12 2017-12-31 13F POST HLDGS COM 737446104 10,323 -1,557 -13.11 818 -22.02 0.0026
2017-11-13 2017-09-30 13F POST HLDGS COM 737446104 11,880 -588 -4.72 1,049 8.37 0.0035
2017-08-14 2017-06-30 13F POST HLDGS COM 737446104 12,468 -964 -7.18 968 -17.69 0.0030
2017-05-15 2017-03-31 13F POST HLDGS COM 737446104 13,432 1,353 11.20 1,176 21.11 0.0040
2017-02-13 2016-12-31 13F POST HLDGS COM 737446104 12,079 7,779 180.91 971 192.47 0.0035
2016-11-14 2016-09-30 13F POST HLDGS COM 737446104 4,300 300 7.50 332 0.30 0.0011
2016-08-09 2016-06-30 13F POST HLDGS COM 737446104 4,000 0 0.00 331 20.36 0.0012
2016-05-13 2016-03-31 13F POST HLDGS COM 737446104 4,000 -95 -2.32 275 8.70 0.0009
2016-02-08 2015-12-31 13F POST HLDGS COM 737446104 4,095 0 0.00 253 4.55 0.0009
2015-11-13 2015-09-30 13F POST HLDGS COM 737446104 4,095 0 0.00 242 9.50 0.0009
2015-08-11 2015-06-30 13F POST HLDGS COM 737446104 4,095 4,095 221 0.0007
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.