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 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 New York $5.72T AUM 30.48% 1-Year Est. Return

AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Arrowstreet Capital Boston, Massachusetts $185B AUM 39.58% 1-Year Est. Return

QCM

Quantinno Capital Management New York $59.9B AUM 28.07% 1-Year Est. Return

UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

William Blair & Company's SAM Position: Q1 2026 in Review

William Blair & Company opened a new position in Boston Beer (SAM) in Q1 2026: 956 shares worth $220K. The stake represents ﹤0.01% of the portfolio and ranks #1447 among its holdings. This is a return to the name: William Blair & Company previously reported a position in SAM as recently as Q1 2022.

William Blair & Company first reported a position in SAM in Q4 2013 and has held it in 12 quarters since. The position peaked at $859K in Q1 2021. 367 funds tracked by Wall St. Rank hold SAM as of Q1 2026.

William Blair & Company held 956 shares of Boston Beer worth $220K as of Q1 2026.
Boston Beer was a new William Blair & Company position in Q1 2026.
Boston Beer made up ﹤0.01% of William Blair & Company's portfolio in Q1 2026, its #1447 holding.
William Blair & Company first reported a position in Boston Beer in Q4 2013 and has held it in 12 quarters since.
William Blair & Company's Boston Beer position peaked at $859K in Q1 2021.
367 funds tracked by Wall St. Rank held Boston Beer as of Q1 2026.

Based on William Blair & Company's 13F filing for Q1 2026, filed 8 May 2026.