Security Snapshot

BOSTON BEER CO INC - Class A Common Stock $0.01 par value (SAM) Institutional Ownership

CUSIP: 100557107

13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026

Latest Period

Q4 2025

Institutions Reporting

340

Shares (Excl. Options)

7,552,265

Price

$195.13

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Type / Class
Equity / Class A Common Stock $0.01 par value
Symbol
SAM on NYSE
Shares outstanding
8,598,125
Price per share
$230.40
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
7,552,265
Total reported value
$1,473,942,272
% of total 13F portfolios
0%
Share change
-332,626
Value change
-$73,096,907
Number of holders
340
Price from insider filings
$230.40
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Quick Takeaways

  • SAM - BOSTON BEER CO INC - Class A Common Stock $0.01 par value is tracked under CUSIP 100557107.
  • 340 institutions reported positions in Q4 2025.
  • 4 significant owners is listed from Schedule 13D/13G reporting.

What Changed

  • Holder count moved from 340 to 34 between Q4 2025 and Q1 2026.
  • Reported value moved from $1,473,942,272 to $12,931,097.

Why This Matters

  • You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
  • 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.

Source Evidence

Source: SEC Form 13F

Latest holder context comes from 340 institutions filings for Q4 2025.

Open SEC Evidence

Investment Quick Answers

What is CUSIP 100557107?
CUSIP 100557107 identifies SAM - BOSTON BEER CO INC - Class A Common Stock $0.01 par value in SEC 13F datasets.

Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.

Significant Owners of BOSTON BEER CO INC - Class A Common Stock $0.01 par value (SAM) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
KOCH C JAMES 22% +8.2% $443,232,331 2,271,472 0% C. James Koch 31 Dec 2025
VANGUARD GROUP INC 12% +20% $202,775,974 +$24,732,923 1,039,184 +14% The Vanguard Group 31 Dec 2025
AQR CAPITAL MANAGEMENT LLC 5.1% -32% $85,900,909 -$40,359,909 440,224 -32% AQR Capital Management, LLC 31 Dec 2025
T. Rowe Price Investment Management, Inc. 0.6% $12,546,221 52,713 T. Rowe Price Investment Management, Inc. 31 Mar 2025

As of 31 Dec 2025, 340 institutional investors reported holding 7,552,265 shares of BOSTON BEER CO INC - Class A Common Stock $0.01 par value (SAM). This represents 88% of the company’s total 8,598,125 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of BOSTON BEER CO INC - Class A Common Stock $0.01 par value (SAM) together control 65% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
VANGUARD GROUP INC 12% 1,039,184 +9.4% 0% $202,775,973
BlackRock, Inc. 8.4% 725,529 -7.3% 0% $141,572,507
AQR CAPITAL MANAGEMENT LLC 5.1% 440,224 -32% 0.05% $85,900,909
FMR LLC 4.2% 360,875 -7.4% 0% $70,417,529
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 3.2% 271,516 +5.1% 0.03% $52,980,917
DIMENSIONAL FUND ADVISORS LP 3% 258,001 -2.9% 0.01% $50,343,735
STATE STREET CORP 3% 254,297 -3.4% 0% $49,620,974
Gotham Asset Management, LLC 2.9% 248,910 +17% 0.18% $48,569,808
UBS Group AG 2.5% 216,634 -3.1% 0.01% $42,271,793
AMERICAN CENTURY COMPANIES INC 2.2% 191,605 +56% 0.02% $37,387,884
SOUTHEASTERN ASSET MANAGEMENT INC/TN/ 1.7% 147,997 +35% 1.3% $28,878,655
GEODE CAPITAL MANAGEMENT, LLC 1.6% 139,198 -2.9% 0% $27,168,318
CITADEL ADVISORS LLC 1.5% 132,943 +12097% 0.02% $25,941,168
Qube Research & Technologies Ltd 1.5% 132,862 +139% 0.04% $25,925,362
Global Alpha Capital Management Ltd. 1.4% 123,028 -6.2% 1.5% $24,006,454
Invesco Ltd. 1.4% 117,112 +1.9% 0% $22,852,065
MORGAN STANLEY 1.3% 114,300 -51% 0% $22,303,642
Woodson Capital Management, LP 1.2% 100,000 3% $19,513,000
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 1.1% 98,826 +3% 0% $19,283,917
AMERIPRISE FINANCIAL INC 1.1% 90,903 -1.1% 0% $17,737,903
Quantinno Capital Management LP 1.1% 90,340 -34% 0.04% $17,628,044
RENAISSANCE TECHNOLOGIES LLC 0.96% 82,679 -5.1% 0.03% $16,133,153
SOUTHERNSUN ASSET MANAGEMENT, LLC 0.88% 75,524 -16% 2.1% $14,736,998
NORTHERN TRUST CORP 0.87% 74,891 -0.37% 0% $14,613,480
Man Group plc 0.83% 71,345 +136% 0.03% $13,921,550

Institutional Holders of BOSTON BEER CO INC - Class A Common Stock $0.01 par value (SAM) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2026 Q1 57,181 $12,931,097 +$1,948,947 $230.40 34
2025 Q4 7,552,265 $1,473,942,272 -$73,096,907 $195.13 340
2025 Q3 7,883,429 $1,666,863,123 +$54,934,102 $211.42 351
2025 Q2 7,648,265 $1,459,088,741 +$69,350,793 $190.81 341
2025 Q1 7,275,869 $1,739,710,483 -$37,297,176 $238.84 324
2024 Q4 7,429,474 $2,227,681,266 +$92,718,723 $299.98 341
2024 Q3 7,044,086 $2,035,067,255 -$7,410,475 $289.14 329
2024 Q2 7,108,479 $2,168,100,423 -$53,273,624 $305.05 323
2024 Q1 7,284,371 $2,217,740,672 -$53,693,867 $304.42 323
2023 Q4 7,436,603 $2,570,079,696 -$138,445,421 $345.59 339
2023 Q3 7,799,274 $3,037,143,867 -$10,653,737 $389.53 320
2023 Q2 7,878,594 $2,430,459,743 -$72,583,499 $308.44 294
2023 Q1 8,092,445 $2,657,921,932 -$17,522,435 $328.70 299
2022 Q4 8,157,780 $2,688,455,498 -$109,303,435 $329.52 312
2022 Q3 8,491,748 $2,749,338,389 -$460,974,221 $323.65 284
2022 Q2 8,554,352 $2,592,267,940 +$254,886,937 $302.97 291
2022 Q1 7,686,515 $2,986,020,745 -$50,585,432 $388.47 305
2021 Q4 7,638,758 $3,859,212,549 -$256,686,477 $505.10 373
2021 Q3 8,111,152 $4,132,526,338 -$703,934,247 $509.75 364
2021 Q2 8,888,321 $9,067,812,842 +$55,724,383 $1020.79 447
2021 Q1 8,790,285 $10,602,896,052 +$268,908,755 $1206.28 411
2020 Q4 8,626,917 $8,576,522,779 +$152,267,931 $994.30 399
2020 Q3 8,503,985 $7,510,617,499 -$119,414,726 $883.36 367
2020 Q2 8,731,242 $4,686,423,081 -$41,916,879 $536.65 318
2020 Q1 8,854,394 $3,253,540,850 +$22,301,869 $367.56 275
2019 Q4 8,794,324 $3,322,750,447 -$64,042,682 $377.85 292
2019 Q3 8,926,331 $3,248,546,552 +$51,529,937 $364.07 297
2019 Q2 8,798,392 $3,320,807,266 +$81,568,143 $377.76 266
2019 Q1 8,735,283 $2,571,810,182 +$46,041,899 $294.73 261
2018 Q4 8,603,996 $2,070,733,056 -$10,825,012 $240.84 249
2018 Q3 8,630,065 $2,479,770,203 +$49,262,822 $287.50 245
2018 Q2 8,450,128 $2,531,208,217 -$28,117,484 $299.70 248
2018 Q1 8,697,278 $1,644,305,774 +$22,212,586 $189.05 243
2017 Q4 8,662,785 $1,655,141,828 -$43,295,615 $191.10 260
2017 Q3 8,927,640 $1,395,193,693 +$45,684,232 $156.20 232
2017 Q2 8,672,879 $1,146,172,457 -$27,898,684 $132.15 217
2017 Q1 9,011,479 $1,305,369,937 +$140,452,898 $144.65 229
2016 Q4 8,840,369 $1,501,500,484 +$76,963,648 $169.85 223
2016 Q3 8,375,492 $1,299,977,578 +$26,540,627 $155.26 206
2016 Q2 8,183,792 $1,399,580,362 -$79,349,455 $171.03 196
2016 Q1 8,667,576 $1,602,175,573 +$40,242,925 $185.07 202
2015 Q4 8,439,366 $1,703,857,298 -$29,116,142 $201.91 216
2015 Q3 8,577,059 $1,806,549,472 -$16,511,691 $210.61 216
2015 Q2 8,608,341 $1,996,933,514 -$22,683,268 $231.99 215
2015 Q1 8,641,621 $2,310,909,462 +$138,841,497 $267.40 228
2014 Q4 8,111,413 $2,348,672,618 +$61,059,827 $289.54 202
2014 Q3 7,743,213 $1,717,127,940 +$7,202,249 $221.76 185
2014 Q2 7,725,802 $1,726,932,828 +$17,381,439 $223.52 174
2014 Q1 7,738,061 $1,893,620,600 +$89,746,913 $244.73 179