Mariner
SAM icon

Mariner’s Boston Beer SAM Stock Holding History

Mariner’s Portfolio SAM Stock Details SAM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$455K Sell
2,569
-8,875
-78% -$1.8M ﹤0.01% 2525
2026
Q1 		$2.64M Buy
11,444
+8,258
+259% +$1.86M ﹤0.01% 1382
2025
Q4 		$623K Sell
3,186
-2,642
-45% -$545K ﹤0.01% 2297
2025
Q3 		$1.23M Buy
+5,828
New +$1.24M ﹤0.01% 1750
2025
Q2 		– Sell
-933
Closed -$223K – 3659
2025
Q1 		$223K Buy
+933
New +$227K ﹤0.01% 2911

Other funds holding SAM

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return

Mariner's SAM Position: Q2 2026 in Review

Mariner reduced its Boston Beer (SAM) stake by 78% in Q2 2026, selling an estimated $1.8M and leaving 2,569 shares worth $455K. The position accounts for ﹤0.01% of the portfolio, ranked #2525.

Mariner first reported a position in SAM in Q1 2025 and has held it in 5 quarters since. The position peaked at $2.64M in Q1 2026. 331 funds tracked by Wall St. Rank hold SAM as of Q2 2026.

  • Mariner held 2,569 shares of Boston Beer worth $455K as of Q2 2026.
  • Mariner sold 8,875 Boston Beer shares in Q2 2026, an estimated $1.8M.
  • Boston Beer made up ﹤0.01% of Mariner's portfolio in Q2 2026, its #2525 holding.
  • Mariner first reported a position in Boston Beer in Q1 2025 and has held it in 5 quarters since.
  • Mariner's Boston Beer position peaked at $2.64M in Q1 2026.
  • 331 funds tracked by Wall St. Rank held Boston Beer as of Q2 2026.

Based on Mariner's 13F filing for Q2 2026, filed 13 Aug 2026.