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SAM in the 13F filings

Boston Beer Inc · CUSIP 100557107

Sector · Consumer staples
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
31 Dec 2025
the date the book describes
Filed
19 Feb 2026
latest of these filings; the earliest 5 Feb 2026
Managers listing it
30
at least, of 95 tracked, among listed positions
Comparable managers
92
filed both Q3 2025 and Q4 2025; 7 listed it in both
Shares listed
2,057,449
combined, among listed positions
Reported value
$401m
combined, at the quarter end

Among the 92 comparable managers: 19 buyers (opened or added shares) and 13 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -43,512.

Managers listing SAM in Q4 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q3 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

30 of 30 holders

ActionFiling
AQR Capital Management LLC440,224$86munder 0.1%Trimmed-206,83617 Feb 2026 (the filing on sec.gov)
Fidelity (FMR LLC)360,875$70munder 0.1%Trimmed-28,94517 Feb 2026 (the filing on sec.gov)
Arrowstreet Capital LP271,516$53munder 0.1%Added+13,11313 Feb 2026 (the filing on sec.gov)
Southeastern Asset Management Inc147,997$29m1.29%Added+38,75913 Feb 2026 (the filing on sec.gov)
Citadel Advisors LLC132,943$26munder 0.1%Added+131,85317 Feb 2026 (the filing on sec.gov)
Invesco Ltd117,112$23munder 0.1%Added+2,22319 Feb 2026 (the filing on sec.gov)
Renaissance Technologies LLC82,679$16munder 0.1%Trimmed-4,40012 Feb 2026 (the filing on sec.gov)
Man Group PLC71,345$14munder 0.1%Added+41,05517 Feb 2026 (the filing on sec.gov)
Voloridge Investment Management LLC63,123$12munder 0.1%Added+11,99217 Feb 2026 (the filing on sec.gov)
Millennium Management LLC56,882$11munder 0.1%Trimmed-15,06117 Feb 2026 (the filing on sec.gov)
D. E. Shaw & Co.53,785$10munder 0.1%Trimmed-18,57017 Feb 2026 (the filing on sec.gov)
Jane Street Group LLC44,752$8.7munder 0.1%Newnew12 Feb 2026 (the filing on sec.gov)
Winton Group Ltd29,431$5.7m0.20%Added+1,34611 Feb 2026 (the filing on sec.gov)
Acadian Asset Management LLC29,021$5.7munder 0.1%Trimmed-77,65310 Feb 2026 (the filing on sec.gov)
GAMCO Investors Inc28,070$5.5m0.05%Added+5,7765 Feb 2026 (the filing on sec.gov)
Marshall Wace LLP26,919$5.3munder 0.1%Added+9,28413 Feb 2026 (the filing on sec.gov)
AllianceBernstein LP20,020$3.9munder 0.1%Added+1,86317 Feb 2026 (the filing on sec.gov)
Susquehanna International Group LLP18,530$3.6munder 0.1%Added+15,28617 Feb 2026 (the filing on sec.gov)
Two Sigma Investments LP16,269$3.2munder 0.1%Added+3,67517 Feb 2026 (the filing on sec.gov)
Two Sigma Advisers LP12,800$2.5munder 0.1%Added+7,30017 Feb 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc7,515$1.5munder 0.1%Added+48017 Feb 2026 (the filing on sec.gov)
Maverick Capital Ltd5,234$1.0munder 0.1%Trimmed-8,80513 Feb 2026 (the filing on sec.gov)
Bridgewater Associates LP5,163$1.0munder 0.1%Trimmed-5,66213 Feb 2026 (the filing on sec.gov)
Janus Henderson Group Ltd3,826$747kunder 0.1%Held017 Feb 2026 (the filing on sec.gov)
Squarepoint Ops LLC3,561$695kunder 0.1%Trimmed-2,52713 Feb 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q3 2025 to Q4 2025, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (3)

Exited (3)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
6 in Q3 2024 to 4 in Q2 2026

Tracked managers listing it, at least.

01020302014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
SAM by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20133$195mn.a.n.a.
Q3 20133$228mn.a.n.a.
Q4 20133$215mn.a.n.a.
Q1 20144$233mn.a.n.a.
Q2 20143$201mn.a.n.a.
Q3 20143$181mn.a.n.a.
Q4 20146$559mn.a.n.a.
Q1 20155$253mn.a.n.a.
Q2 20158$274mn.a.n.a.
Q3 20156$277mn.a.n.a.
Q4 20156$245mn.a.n.a.
Q1 20164$225mn.a.n.a.
Q2 20164$231mn.a.n.a.
Q3 20163$178mn.a.n.a.
Q4 20164$117mn.a.n.a.
Q1 20173$5.9mn.a.n.a.
Q2 20171$3.4mn.a.n.a.
Q3 20176$51mn.a.n.a.
Q4 20178$307mn.a.n.a.
Q1 20186$293mn.a.n.a.
Q2 201810$538mn.a.n.a.
Q3 20187$566mn.a.n.a.
Q4 201810$474mn.a.n.a.
Q1 201911$658mn.a.n.a.
Q2 201914$933mn.a.n.a.
Q3 201916$1.0bnn.a.n.a.
Q4 201913$968mn.a.n.a.
Q1 202013$1.0bnn.a.n.a.
Q2 202014$1.7bnn.a.n.a.
Q3 202023$3.1bnn.a.n.a.
Q4 202022$3.4bnn.a.n.a.
Q1 202115$4.3bnn.a.n.a.
Q2 202114$2.6bnn.a.n.a.
Q3 202112$1.3bnn.a.n.a.
Q4 202112$977mn.a.n.a.
Q1 20226$658mn.a.n.a.
Q2 20226$846mn.a.n.a.
Q3 20224$478mn.a.n.a.
Q4 20226$532mn.a.n.a.
Q1 20237$624mn.a.n.a.
Q2 20239$565mn.a.n.a.
Q3 202311$808mn.a.n.a.
Q4 20237$118m24
Q1 20246$118m41
Q2 20247$128m42
Q3 20246$143m51
Q4 20246$191m31
Q1 20257$140m52
Q2 20255$86m31
Q3 20258$252m80
Q4 20255$94m1913
Q1 20265$248m1318
Q2 20264$39m2012

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

SAM and PM →SAM and KO →SAM and COST →Choose a stock to compare with SAM →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own SAM, latest filings →Back to the 13F Explorer →