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Lee Ainslie’s Boston Beer SAM Stock Holding History

Lee Ainslie’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
Q1 		– Sell
-5,234
Closed -$1.02M – 296
2025
Q4 		$1.02M Sell
5,234
-8,805
-63% -$1.82M 0.01% 162
2025
Q3 		$2.97M Buy
+14,039
New +$2.99M 0.04% 136
2023
Q3 		– Sell
-6,862
Closed -$2.12M – 471
2023
Q2 		$2.12M Buy
6,862
+491
+8% +$158K 0.05% 102
2023
Q1 		$2.09M Buy
6,371
+5,480
+615% +$1.88M 0.05% 79
2022
Q4 		$294K Buy
+891
New +$323K 0.01% 293
2021
Q3 		– Sell
-3,771
Closed -$3.85M – 776
2021
Q2 		$3.85M Buy
3,771
+2,017
+115% +$2.26M 0.04% 111
2021
Q1 		$2.12M Sell
1,754
-1,040
-37% -$1.09M 0.02% 144
2020
Q4 		$2.78M Sell
2,794
-2,580
-48% -$2.48M 0.04% 101
2020
Q3 		$4.75M Sell
5,374
-10,334
-66% -$8.16M 0.09% 66
2020
Q2 		$8.43M Sell
15,708
-6,023
-28% -$2.92M 0.18% 35
2020
Q1 		$7.99M Sell
21,731
-13,677
-39% -$5.07M 0.17% 51
2019
Q4 		$13.4M Buy
35,408
+1,993
+6% +$751K 0.19% 48
2019
Q3 		$12.2M Buy
33,415
+16,105
+93% +$6.33M 0.18% 53
2019
Q2 		$6.54M Buy
17,310
+8,750
+102% +$2.77M 0.09% 94
2019
Q1 		$2.52M Buy
8,560
+2,480
+41% +$678K 0.03% 241
2018
Q4 		$1.46M Buy
+6,080
New +$1.7M 0.02% 245

Other funds holding SAM

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 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
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return
QCM
Quantinno Capital Management New York $83.3B AUM 37.97% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

Lee Ainslie's SAM Position: Q1 2026 in Review

Lee Ainslie sold out of Boston Beer (SAM) in Q1 2026, closing a stake of 5,234 shares — an estimated $1.02M sold.

Lee Ainslie first reported a position in SAM in Q4 2018 and held it in 16 quarters. The position peaked at $13.4M in Q4 2019. 369 funds tracked by Wall St. Rank hold SAM as of Q1 2026.

  • Lee Ainslie reported no remaining Boston Beer position as of Q1 2026 after selling out during the quarter.
  • Lee Ainslie sold 5,234 Boston Beer shares in Q1 2026, an estimated $1.02M.
  • Lee Ainslie first reported a position in Boston Beer in Q4 2018 and held it in 16 quarters.
  • Lee Ainslie's Boston Beer position peaked at $13.4M in Q4 2019.
  • 369 funds tracked by Wall St. Rank held Boston Beer as of Q1 2026.

Based on Maverick Capital's 13F filing for Q1 2026, filed 15 May 2026.