William Blair & Company
SAM icon

William Blair & Company’s Boston Beer SAM Stock Holding History

William Blair & Company’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 		– Sell
-956
Closed -$220K – 2055
2026
Q1 		$220K Buy
+956
New +$215K ﹤0.01% 1447
2022
Q2 		– Sell
-589
Closed -$229K – 1922
2022
Q1 		$229K Sell
589
-1
-0.2% -$417 ﹤0.01% 1471
2021
Q4 		$298K Buy
590
+75
+15% +$37.5K ﹤0.01% 1423
2021
Q3 		$263K Sell
515
-195
-27% -$133K ﹤0.01% 1378
2021
Q2 		$725K Sell
710
-2
-0.3% -$2.25K ﹤0.01% 1024
2021
Q1 		$859K Sell
712
-26
-4% -$27.3K ﹤0.01% 946
2020
Q4 		$734K Buy
738
+28
+4% +$26.9K ﹤0.01% 968
2020
Q3 		$627K Sell
710
-34
-5% -$26.9K ﹤0.01% 906
2020
Q2 		$399K Buy
+744
New +$360K ﹤0.01% 1001
2016
Q4 		– Sell
-1,388
Closed -$216K – 1456
2016
Q3 		$216K Buy
+1,388
New +$242K ﹤0.01% 1134
2014
Q2 		– Sell
-1,590
Closed -$388K – 2111
2014
Q1 		$388K Sell
1,590
-220
-12% -$50.1K ﹤0.01% 1693
2013
Q4 		$437K Buy
+1,810
New +$435K ﹤0.01% 1623

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

William Blair & Company's SAM Position: Q2 2026 in Review

William Blair & Company sold out of Boston Beer (SAM) in Q2 2026, closing a stake of 956 shares — an estimated $220K sold.

William Blair & Company first reported a position in SAM in Q4 2013 and held it in 12 quarters. The position peaked at $859K in Q1 2021. 330 funds tracked by Wall St. Rank hold SAM as of Q2 2026.

  • William Blair & Company reported no remaining Boston Beer position as of Q2 2026 after selling out during the quarter.
  • William Blair & Company sold 956 Boston Beer shares in Q2 2026, an estimated $220K.
  • William Blair & Company first reported a position in Boston Beer in Q4 2013 and held it in 12 quarters.
  • William Blair & Company's Boston Beer position peaked at $859K in Q1 2021.
  • 330 funds tracked by Wall St. Rank held Boston Beer as of Q2 2026.

Based on William Blair & Company's 13F filing for Q2 2026, filed 11 Aug 2026.