SAM The Boston Beer Company, Inc.

NYSE
$171.57

The Boston Beer Company, Inc. (SAM) Institutional Ownership

What the institutions did with SAM last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.

Managers compared
406
filed both this quarter and last
Managers holding
325
-38 on the quarter
Buyers
153
43 opened new
Sellers
194
81 sold out entirely
Buyer share
44.1%
of managers who traded it
Breadth
-11.8
net buyers, as a share of those trading

Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.

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Ownership map

Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.

Cut Unchanged Added Color saturates at ±50%.

Largest holders

Manager Shares % of reported
BlackRock, Inc. 1.0M 11.8%
VANGUARD PORTFOLIO MANAGEMENT LLC 609.4K 7.1%
AQR CAPITAL MANAGEMENT LLC 540.0K 6.2%
UBS Group AG 434.7K 5.0%
AMERICAN CENTURY COMPANIES INC 385.3K 4.5%
VANGUARD CAPITAL MANAGEMENT LLC 345.8K 4.0%
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 321.1K 3.7%
DIMENSIONAL FUND ADVISORS LP 320.9K 3.7%
STATE STREET CORP 314.7K 3.6%
MILLENNIUM MANAGEMENT LLC 283.5K 3.3%
Global Alpha Capital Management Ltd. 267.6K 3.1%
GEODE CAPITAL MANAGEMENT, LLC 205.4K 2.4%
T. Rowe Price Investment Management, Inc. 199.4K 2.3%
SOUTHEASTERN ASSET MANAGEMENT INC/TN/ 146.0K 1.7%
SOUTHERNSUN ASSET MANAGEMENT, LLC 131.9K 1.5%
GOLDMAN SACHS GROUP INC 130.8K 1.5%
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 126.2K 1.5%
NEUBERGER BERMAN GROUP LLC 117.5K 1.4%
MORGAN STANLEY 104.3K 1.2%
AMERIPRISE FINANCIAL INC 103.0K 1.2%
Quantinno Capital Management LP 102.6K 1.2%
RENAISSANCE TECHNOLOGIES LLC 102.2K 1.2%
D. E. Shaw & Co., Inc. 99.5K 1.2%
NORTHERN TRUST CORP 98.8K 1.1%
Trexquant Investment LP 73.3K 0.8%

Largest changes

Manager Action Previous Current Change
BlackRock, Inc. Increased 770.3K 1.0M +245.0K
UBS Group AG Increased 218.6K 434.7K +216.1K
MILLENNIUM MANAGEMENT LLC Increased 96.6K 283.5K +186.9K
Gotham Asset Management, LLC Reduced 170.3K 3.2K -167.1K
FMR LLC Reduced 195.4K 60.6K -134.7K
Quantinno Capital Management LP Reduced 230.6K 102.6K -128.0K
T. Rowe Price Investment Management, Inc. Increased 78.5K 199.4K +120.9K
Global Alpha Capital Management Ltd. Increased 147.5K 267.6K +120.0K
NEUBERGER BERMAN GROUP LLC New 0 117.5K +117.5K
AQR CAPITAL MANAGEMENT LLC Reduced 652.0K 540.0K -112.0K
AMERICAN CENTURY COMPANIES INC Increased 288.1K 385.3K +97.2K
Woodson Capital Management, LP Sold Out 90.0K 0 -90.0K
Man Group plc Sold Out 77.5K 0 -77.5K
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP Increased 245.2K 321.1K +75.8K
GEODE CAPITAL MANAGEMENT, LLC Increased 142.1K 205.4K +63.3K
WORLDQUANT MILLENNIUM ADVISORS LLC New 0 62.7K +62.7K
STATE STREET CORP Increased 255.2K 314.7K +59.5K
SOUTHERNSUN ASSET MANAGEMENT, LLC Increased 74.8K 131.9K +57.1K
Invesco Ltd. Reduced 115.6K 58.6K -57.0K
D. E. Shaw & Co., Inc. Increased 46.6K 99.5K +52.8K
Qube Research & Technologies Ltd Reduced 111.3K 62.6K -48.7K
DIMENSIONAL FUND ADVISORS LP Increased 273.6K 320.9K +47.3K
Trexquant Investment LP Increased 29.8K 73.3K +43.5K
Corient Private Wealth LP Reduced 45.4K 3.5K -41.9K
Crawford Fund Management, LLC Sold Out 39.4K 0 -39.4K
CAPITAL FUND MANAGEMENT S.A. New 0 33.4K +33.4K
Edgestream Partners, L.P. New 0 32.9K +32.9K
Darwins River Capital, LP New 0 30.8K +30.8K
TUDOR INVESTMENT CORP ET AL New 0 30.5K +30.5K
MORGAN STANLEY Reduced 134.5K 104.3K -30.2K
ING GROEP NV New 0 29.3K +29.3K
SOUTHEASTERN ASSET MANAGEMENT INC/TN/ Increased 118.4K 146.0K +27.6K
DARK FOREST CAPITAL MANAGEMENT LP New 0 26.7K +26.7K
IEQ CAPITAL, LLC Reduced 36.9K 10.7K -26.2K
VANGUARD PORTFOLIO MANAGEMENT LLC Reduced 634.5K 609.4K -25.1K
FRANKLIN RESOURCES INC Reduced 55.6K 32.6K -23.1K
NORTHERN TRUST CORP Increased 79.0K 98.8K +19.8K
CHARLES SCHWAB INVESTMENT MANAGEMENT INC Increased 107.0K 126.2K +19.2K
BANK OF AMERICA CORP /DE/ Increased 44.4K 63.1K +18.7K
ExodusPoint Capital Management, LP New 0 17.9K +17.9K
ONTARIO TEACHERS PENSION PLAN BOARD Sold Out 17.1K 0 -17.1K
Bridgewater Associates, LP Increased 1.9K 18.6K +16.8K
HRT FINANCIAL LP Increased 19.1K 35.4K +16.3K
GABELLI FUNDS LLC Increased 26.4K 42.4K +16.0K
GOLDMAN SACHS GROUP INC Reduced 145.0K 130.8K -14.1K
Creative Planning Reduced 26.5K 12.4K -14.1K
CAXTON ASSOCIATES LLP New 0 12.9K +12.9K
AMERIPRISE FINANCIAL INC Increased 91.5K 103.0K +11.5K
Cardinal Capital Management Sold Out 11.4K 0 -11.4K
Cerity Partners LLC Reduced 16.1K 5.2K -10.9K
NOMURA HOLDINGS INC Reduced 27.2K 16.5K -10.7K
Quantedge Capital Pte Ltd Sold Out 10.4K 0 -10.4K
Odyssean, LLC Increased 6.5K 16.3K +9.9K
Schonfeld Strategic Advisors LLC Increased 3.8K 13.7K +9.8K
Quadrature Capital Ltd New 0 9.5K +9.5K
Mariner, LLC Reduced 11.4K 2.6K -8.9K
JANE STREET GROUP, LLC Sold Out 8.9K 0 -8.9K
SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced 26.1K 17.6K -8.5K
RENAISSANCE TECHNOLOGIES LLC Increased 93.8K 102.2K +8.4K
XTX Topco Ltd Increased 5.5K 13.7K +8.2K

13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.