Security Snapshot

Post Holdings, Inc. - Common Stock (POST) Institutional Ownership

CUSIP: 737446104

13F Institutional Holders and Ownership History from Q1 2014 to Q3 2026

13F reference period

Q3 2026

Institutions Reporting

237

Shares (Excl. Options)

19.18MFull value: 19,180,494 · shares · 30 Sep 2026

Price

$72.85

The headline uses the Q3 2026 reference period after its reporting deadline. Available reports may still be incomplete or amended.

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Security type / class
Equity / Common Stock
Symbol
POST on NYSE
All holders as of 30 Sep 2026
Q3 2026
Total 13F shares
19,180,494
Latest holder snapshot 5 signals
Total 13F value
$1,397,657,665
Portfolio coverage rank
0%
Share change
-264,831
Value change
-$31,553,375
Number of holders
237
Issuer context Names, identifiers, and filing context for this profile. 3 identity fields
Shares outstanding
44,033,242
SEC-reported price per share
$76.94
Insider filing price
$76.94
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Filing notes and source

Key facts

  • POST - Post Holdings, Inc. - Common Stock is tracked under CUSIP 737446104.
  • 237 institutions reported positions in Q3 2026.
  • 6 significant owners is listed from Schedule 13D/13G reporting.

Change

  • Holder count moved from 416 to 237 between Q2 2026 and Q3 2026.
  • SEC-reported value moved from
    $4.01BFull value: $4,008,767,173 · USD · 30 Jun 2026
    to
    $1.4BFull value: $1,397,657,665 · USD · 30 Sep 2026
    .

Research use

  • You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
  • 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.

Evidence

Source: SEC Form 13F

Latest holder context comes from 237 institutions filings for Q3 2026.

Open SEC evidence

Security key

737446104

13F reference period

Q3 2026

13F holders

237

13D/G owners

6

CIK / CUSIP context first

Open Q3 2026 holders POST full holder history Post Holdings, Inc. SEC filings Post Holdings, Inc. company facts Post Holdings, Inc. insider transactions

Broader feeds

Latest 13F filings Latest 13D/G filings All securities

13D/G owners

Significant owners

Large-stake holder rows connected to Schedule 13D/G evidence.

Rows
6
Security
POST
Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
STIRITZ WILLIAM P 10% +11% $539,404,522 +$276,025 4,885,468 +0.05% William P. Stiritz 04 Mar 2026
DIMENSIONAL FUND ADVISORS LP 6.4% +24% $303,685,562 +$25,649,425 3,071,875 +9.2% Dimensional Fund Advisors LP 31 Mar 2026
Route One Investment Company, L.P. 6.5% +6.7% $294,643,720 -$46,270,131 2,950,568 -14% Route One Investment Company, L.P. 31 Mar 2026
JPMORGAN CHASE & CO 5.1% $299,943,791 2,790,694 JPMORGAN CHASE & CO. 30 Sep 2025
VANGUARD PORTFOLIO MANAGEMENT LLC 5.1% +4.4% $163,278,122 +$2,163,864 2,241,292 +1.3% Vanguard Portfolio Management 30 Sep 2026
Clarkston Capital Partners, LLC 2.6% $119,139,671 1,193,067 Clarkston Capital Partners, LLC 31 Mar 2026
As of 30 Sep 2026, 237 institutional investors reported holding
19.18MFull value: 19,180,494 · shares · 30 Sep 2026
shares of Post Holdings, Inc. - Common Stock (POST). This represents 44% of the company’s total
44.03MFull value: 44,033,242 · shares · Stored outstanding share count
outstanding shares.

13F concentration

Top 25 institutional shareholders

Largest 13F positions for this security by reported shares and value.

Top holder share
38%
Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
DIMENSIONAL FUND ADVISORS LP 7.3% 3,221,827 +2.1% 0.04% $234,711,679
VANGUARD PORTFOLIO MANAGEMENT LLC 5% 2,205,573 +1.4% 0.01% $160,675,993
VANGUARD CAPITAL MANAGEMENT LLC 3.8% 1,682,879 -5.7% 0% $122,597,735
STATE STREET CORP 2.9% 1,295,338 -4% 0% $94,365,373
Clarkston Capital Partners, LLC 2.8% 1,245,098 +3.2% 8.2% $90,705,389
MANUFACTURERS LIFE INSURANCE COMPANY, THE 2.5% 1,079,511 -6.5% 0.06% $78,642,376
GEODE CAPITAL MANAGEMENT, LLC 1.8% 778,945 +4.3% 0% $56,759,161
Quantinno Capital Management LP 1.7% 733,753 +148% 0.05% $53,453,906
Fisher Asset Management, LLC 1.3% 576,970 +20% 0.01% $42,032,281
MORGAN STANLEY 1.3% 554,229 -45% 0% $40,375,665
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.96% 421,588 +63% 0.01% $30,712,686
Diamond Hill Capital Management, LLC (Investment Advisor) 0.78% 344,747 -44% 0.27% $25,114,819
IRIDIAN ASSET MANAGEMENT LLC/CT 0.61% 268,652 +19% 7.1% $19,571,298
VANGUARD FIDUCIARY TRUST CO 0.54% 236,803 -5.9% 0% $17,251,099
EULAV Asset Management 0.52% 231,025 0% 0.61% $16,830,171
US BANCORP \DE\ 0.51% 226,737 +475% 0.02% $16,517,791
Invesco Ltd. 0.51% 223,587 -22% 0% $16,288,314
GAMCO INVESTORS, INC. ET AL 0.48% 212,190 -6.2% 0.15% $15,458,042
H Squared Management LP 0.45% 196,387 -9.2% 9.6% $14,306,793
THOMPSON SIEGEL & WALMSLEY LLC 0.42% 185,896 +43% 0.25% $13,543,000
Wilshire Advisors LLC 0.42% 183,224 0.03% $13,347,868
FIRST TRUST ADVISORS LP 0.37% 163,775 +17% 0.01% $11,931,008
RAYMOND JAMES FINANCIAL INC 0.35% 155,367 -33% 0% $11,318,486
GABELLI FUNDS LLC 0.33% 146,810 -19% 0.07% $10,695,109
Retirement Systems of Alabama 0.3% 130,505 +216% 0.03% $9,507,289

Quarter history

Institutional holders across reporting periods

Holder count, reported shares/value, and median price by quarter.

Periods
51
Headline period
Q3 2026
Rows shown
1-25 of 51
Period 13F Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2026 Q3 19,180,494 $1,397,657,665 -$31,553,375 $72.85 237
2026 Q2 45,361,677 $4,008,767,173 -$21,768,451 $88.26 416
2026 Q1 45,503,202 $4,493,947,312 -$189,222,117 $98.86 428
2025 Q4 47,777,483 $4,732,518,126 -$98,905,952 $99.05 408
2025 Q3 48,461,471 $5,208,231,530 -$285,368,589 $107.48 414
2025 Q2 51,180,494 $5,580,180,374 -$123,308,613 $109.03 430
2025 Q1 52,282,258 $6,082,503,542 -$25,916,874 $116.36 414
2024 Q4 52,648,311 $6,025,308,840 -$8,547,101 $114.46 411
2024 Q3 52,354,306 $6,060,064,167 -$82,537,003 $115.75 406
2024 Q2 53,337,584 $5,556,086,171 -$112,400,660 $104.16 379
2024 Q1 54,458,137 $5,786,423,666 -$288,634,508 $106.28 373
2023 Q4 57,341,200 $5,050,867,354 +$290,408,223 $88.06 360
2023 Q3 54,060,608 $4,635,108,133 +$182,797,314 $85.74 355
2023 Q2 51,826,163 $4,491,446,215 -$84,990,381 $86.65 326
2023 Q1 52,598,291 $4,726,921,601 +$26,109,668 $89.87 348
2022 Q4 52,444,057 $4,733,431,259 -$147,913,901 $90.26 353
2022 Q3 54,274,267 $4,446,046,057 -$173,019,475 $81.91 313
2022 Q2 53,985,185 $4,445,936,069 -$191,349,589 $82.35 301
2022 Q1 56,982,563 $3,947,662,471 +$26,531,907 $69.26 291
2021 Q4 56,074,842 $6,320,968,667 -$151,147,394 $112.73 318
2021 Q3 57,356,293 $6,317,996,205 -$151,969,026 $110.16 311
2021 Q2 58,734,178 $6,369,880,566 +$272,552,283 $108.47 319
2021 Q1 56,224,749 $5,944,851,132 -$132,980,512 $105.72 308
2020 Q4 57,496,086 $5,806,969,116 -$170,579,262 $101.01 303
2020 Q3 59,299,599 $5,092,267,564 -$40,845,162 $86.00 294
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