Mariner
SEB icon

Mariner’s Seaboard Corp SEB Stock Holding History

Mariner’s Portfolio SEB Stock Details SEB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$1.66M Sell
294
-179
-38% -$897K ﹤0.01% 1629
2025
Q4 		$2.1M Sell
473
-60
-11% -$237K ﹤0.01% 1472
2025
Q3 		$1.94M Buy
533
+21
+4% +$73.1K ﹤0.01% 1458
2025
Q2 		$1.47M Buy
512
+29
+6% +$76.6K ﹤0.01% 1537
2025
Q1 		$1.3M Buy
483
+126
+35% +$331K ﹤0.01% 1508
2024
Q4 		$867K Buy
357
+217
+155% +$597K ﹤0.01% 1755
2024
Q3 		$440K Buy
140
+27
+24% +$84.2K ﹤0.01% 2242
2024
Q2 		$357K Buy
+113
New +$364K ﹤0.01% 2317
2024
Q1 		– Sell
-94
Closed -$336K – 3229
2023
Q4 		$336K Buy
+94
New +$334K ﹤0.01% 2242

Other funds holding SEB

Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $185B AUM 39.58% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return
PMG
Private Management Group Irvine, California $3.47B AUM 13.39% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
WCM
Wallace Capital Management Dallas, Texas $871M AUM 13.69% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $654B AUM 26.35% 1-Year Est. Return

Mariner's SEB Position: Q1 2026 in Review

Mariner reduced its Seaboard Corp (SEB) stake by 38% in Q1 2026, selling an estimated $897K and leaving 294 shares worth $1.66M. The position accounts for ﹤0.01% of the portfolio, ranked #1629.

Mariner first reported a position in SEB in Q4 2023 and has held it in 9 quarters since. The position peaked at $2.1M in Q4 2025. 207 funds tracked by Wall St. Rank hold SEB as of Q1 2026.

  • Mariner held 294 shares of Seaboard Corp worth $1.66M as of Q1 2026.
  • Mariner sold 179 Seaboard Corp shares in Q1 2026, an estimated $897K.
  • Seaboard Corp made up ﹤0.01% of Mariner's portfolio in Q1 2026, its #1629 holding.
  • Mariner first reported a position in Seaboard Corp in Q4 2023 and has held it in 9 quarters since.
  • Mariner's Seaboard Corp position peaked at $2.1M in Q4 2025.
  • 207 funds tracked by Wall St. Rank held Seaboard Corp as of Q1 2026.

Based on Mariner's 13F filing for Q1 2026, filed 13 May 2026.