POST HOLDINGS INC (POST) Top Institutional Shareholders
POST HOLDINGS INC (POST) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $4.09B in POST holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of POST tracked by InsiderSet, reporting ownership valued at approximately $393.44M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $354.04M, representing an estimated loss of -10.01% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 52% of the total disclosed POST value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Dimensional Fund Advisors Lp, Route One Investment Company, L.P., and several other long-term asset managers with concentrated positions in POST HOLDINGS INC (POST).
This page ranks the largest institutional POST shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
422
Total Reported Value
$4.09B
Largest Holder
Blackrock, Inc.
Largest Position
$393.44M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
57
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 3,979,802 | $393,443,204 | $354,043,186 | -$39,400,018 | -10.01% | |
| Dimensional Fund Advisors Lp | 0.06% | 3,071,875 | $303,678,023 | $273,274,000 | -$30,404,023 | -10.01% | |
| Route One Investment Company, L.P. | 12.77% | 2,950,568 | $291,693,152 | $262,482,529 | -$29,210,623 | -10.01% | |
| Vanguard Portfolio Management Llc | 0.01% | 2,431,497 | $240,377,793 | $216,305,973 | -$24,071,820 | -10.01% | |
| Vanguard Capital Management Llc | 0.00% | 1,874,037 | $185,267,298 | $166,714,332 | -$18,552,966 | -10.01% | |
| Holocene Advisors, Lp | 0.42% | 1,766,642 | $174,650,228 | $157,160,472 | -$17,489,756 | -10.01% | |
| London Co Of Virginia | 0.90% | 1,476,638 | $145,981,437 | $131,361,716 | -$14,619,721 | -10.01% | |
| State Street Corp | 0.00% | 1,422,219 | $140,600,570 | $126,520,602 | -$14,079,968 | -10.01% | |
| Two Sigma Investments, Lp | 0.11% | 1,392,048 | $137,617,865 | $123,836,590 | -$13,781,275 | -10.01% | |
| Manufacturers Life Insurance Company, The | 0.11% | 1,263,594 | $124,918,903 | $112,409,322 | -$12,509,581 | -10.01% | |
| Clarkston Capital Partners, Llc | 9.00% | 1,193,067 | $117,946,604 | $106,135,240 | -$11,811,364 | -10.01% | |
| Ubs Group Ag | 0.02% | 1,044,362 | $103,245,628 | $92,906,444 | -$10,339,184 | -10.01% | |
| Fmr Llc | 0.00% | 831,169 | $82,169,376 | $73,940,794 | -$8,228,582 | -10.01% | |
| Diamond Hill Capital Management Inc | 0.50% | 816,143 | $80,683,897 | $72,604,081 | -$8,079,816 | -10.01% | |
| Geode Capital Management, Llc | 0.00% | 806,826 | $79,782,605 | $71,775,241 | -$8,007,364 | -10.04% | |
| Morgan Stanley | 0.00% | 795,423 | $78,635,767 | $70,760,830 | -$7,874,937 | -10.01% | |
| Invesco Ltd. | 0.01% | 560,132 | $55,374,651 | $49,829,343 | -$5,545,308 | -10.01% | |
| Charles Schwab Investment Management Inc | 0.01% | 466,298 | $46,098,220 | $41,481,870 | -$4,616,350 | -10.01% | |
| Quantinno Capital Management Lp | 0.08% | 462,631 | $45,735,701 | $41,155,654 | -$4,580,047 | -10.01% | |
| Fisher Asset Management, Llc | 0.02% | 458,453 | $45,322,703 | $40,783,979 | -$4,538,724 | -10.01% | |
| Point72 Asset Management, L.P. | 0.07% | 427,198 | $42,232,794 | $38,003,534 | -$4,229,260 | -10.01% | |
| Junto Capital Management Lp | 0.86% | 407,608 | $40,296,127 | $36,260,808 | -$4,035,319 | -10.01% | |
| Northern Trust Corp | 0.01% | 388,707 | $38,427,574 | $34,579,375 | -$3,848,199 | -10.01% | |
| Aqr Capital Management Llc | 0.02% | 349,960 | $34,135,098 | $31,132,442 | -$3,002,656 | -8.80% | |
| Pya Waltman Capital, Llc | 9.02% | 329,210 | $32,545,655 | $29,286,522 | -$3,259,133 | -10.01% | |
| D. E. Shaw & Co., Inc. | 0.03% | 325,780 | $32,206,611 | $28,981,389 | -$3,225,222 | -10.01% | |
| Bank Of America Corp | 0.00% | 300,794 | $29,736,495 | $26,758,634 | -$2,977,861 | -10.01% | |
| Bank Of New York Mellon Corp | 0.01% | 300,648 | $29,722,039 | $26,745,646 | -$2,976,393 | -10.01% | |
| Vanguard Fiduciary Trust Co | 0.01% | 261,266 | $25,828,757 | $23,242,223 | -$2,586,534 | -10.01% | |
| Loomis Sayles & Co L P | 0.03% | 258,688 | $25,573,922 | $23,012,884 | -$2,561,038 | -10.01% | |
| Arrowstreet Capital, Limited Partnership | 0.01% | 257,566 | $25,462,975 | $22,913,071 | -$2,549,904 | -10.01% | |
| Raymond James Financial Inc | 0.01% | 256,950 | $25,402,064 | $22,858,272 | -$2,543,792 | -10.01% | |
| Victory Capital Management Inc | 0.02% | 252,108 | $24,923,397 | $22,427,528 | -$2,495,869 | -10.01% | |
| Gamco Investors, Inc. Et Al | 0.22% | 229,966 | $22,734,439 | $20,457,775 | -$2,276,664 | -10.01% | |
| Eulav Asset Management | 0.71% | 225,042 | $22,247,652 | $20,019,736 | -$2,227,916 | -10.01% | |
| Wells Fargo & Company/Mn | 0.00% | 222,748 | $22,020,870 | $19,815,662 | -$2,205,208 | -10.01% | |
| Citadel Advisors Llc | 0.02% | 218,706 | $21,621,275 | $19,456,086 | -$2,165,189 | -10.01% | |
| Exoduspoint Capital Management, Lp | 0.21% | 205,943 | $20,359,525 | $18,320,689 | -$2,038,836 | -10.01% | |
| Braun Stacey Associates Inc | 0.66% | 200,398 | $19,811,346 | $17,827,406 | -$1,983,940 | -10.01% | |
| H Squared Management Lp | 18.26% | 200,387 | $19,810,259 | $17,826,428 | -$1,983,831 | -10.01% | |
| Bnp Paribas Financial Markets | 0.01% | 196,177 | $19,394,058 | $17,451,906 | -$1,942,152 | -10.01% | |
| Gabelli Funds Llc | 0.12% | 186,060 | $18,393,892 | $16,551,898 | -$1,841,994 | -10.01% | |
| Artemis Investment Management Llp | 0.19% | 183,815 | $18,171,951 | $16,352,182 | -$1,819,769 | -10.01% | |
| Iridian Asset Management Llc/Ct | 7.29% | 181,969 | $17,989,455 | $16,187,962 | -$1,801,493 | -10.01% | |
| Jones Financial Companies Lllp | 0.01% | 187,901 | $17,982,126 | $16,715,673 | -$1,266,453 | -7.04% | |
| Millennium Management Llc | 0.01% | 178,894 | $17,685,461 | $15,914,410 | -$1,771,051 | -10.01% | |
| Envestnet Asset Management Inc | 0.00% | 171,748 | $16,979,022 | $15,278,702 | -$1,700,320 | -10.01% | |
| Hancock Whitney Corp | 0.27% | 149,351 | $15,643,658 | $13,286,265 | -$2,357,393 | -15.07% | |
| Goldman Sachs Group Inc | 0.00% | 154,964 | $15,319,741 | $13,785,597 | -$1,534,144 | -10.01% | |
| Deutsche Bank Ag\ | 0.00% | 152,239 | $15,050,348 | $13,543,181 | -$1,507,167 | -10.01% |
Frequently asked questions about POST
Who owns the most POST stock?
The largest holders of POST are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for POST HOLDINGS INC (POST).
Is POST widely held by superinvestors?
Many widely followed stocks like POST appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly POST is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.