Mariner
POST icon

Mariner’s Post Holdings POST Stock Holding History

Mariner’s Portfolio POST Stock Details POST Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-6,050
Closed -$650K – 3746
2025
Q3 		$650K Sell
6,050
-926
-13% -$99.3K ﹤0.01% 2223
2025
Q2 		$761K Buy
6,976
+1,566
+29% +$176K ﹤0.01% 2003
2025
Q1 		$629K Sell
5,410
-1,495
-22% -$166K ﹤0.01% 2015
2024
Q4 		$790K Buy
6,905
+927
+16% +$106K ﹤0.01% 1823
2024
Q3 		$692K Buy
5,978
+1,133
+23% +$127K ﹤0.01% 1886
2024
Q2 		$505K Buy
4,845
+255
+6% +$26.5K ﹤0.01% 2039
2024
Q1 		$488K Buy
4,590
+347
+8% +$34.8K ﹤0.01% 2033
2023
Q4 		$374K Buy
4,243
+1,633
+63% +$139K ﹤0.01% 2157
2023
Q3 		$224K Sell
2,610
-35
-1% -$3.05K ﹤0.01% 2417
2023
Q2 		$229K Buy
2,645
+247
+10% +$21.7K ﹤0.01% 2350
2023
Q1 		$215K Sell
2,398
-182
-7% -$16.6K ﹤0.01% 2362
2022
Q4 		$233K Sell
2,580
-75
-3% -$6.69K ﹤0.01% 2235
2022
Q3 		$217K Buy
+2,655
New +$230K ﹤0.01% 2008

Other funds holding POST

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
ROIC
Route One Investment Company San Francisco, California $2.35B AUM 11.7% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
CCP
Clarkston Capital Partners Rochester, Michigan $1.31B AUM 3.79% 1-Year Est. Return
LCOV
London Company of Virginia Richmond, Virginia $16.2B AUM 17.5% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Manulife (Manufacturers Life Insurance)
Manulife (Manufacturers Life Insurance) Canada, Ontario, Canada $116B AUM 26.37% 1-Year Est. Return
Holocene Advisors
Holocene Advisors New York $41.5B AUM 42.97% 1-Year Est. Return

Mariner's POST Position: Q4 2025 in Review

Mariner sold out of Post Holdings (POST) in Q4 2025, closing a stake of 6,050 shares — an estimated $650K sold.

Mariner first reported a position in POST in Q3 2022 and held it in 13 quarters. The position peaked at $790K in Q4 2024. 407 funds tracked by Wall St. Rank hold POST as of Q4 2025.

  • Mariner reported no remaining Post Holdings position as of Q4 2025 after selling out during the quarter.
  • Mariner sold 6,050 Post Holdings shares in Q4 2025, an estimated $650K.
  • Mariner first reported a position in Post Holdings in Q3 2022 and held it in 13 quarters.
  • Mariner's Post Holdings position peaked at $790K in Q4 2024.
  • 407 funds tracked by Wall St. Rank held Post Holdings as of Q4 2025.

Based on Mariner's 13F filing for Q4 2025, filed 13 Feb 2026.