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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 Mar 2026
the date the book describes
Filed
18 May 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
28
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 4 listed it in both
Shares listed
1,925,542
combined, among listed positions
Reported value
$443m
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 13 buyers (opened or added shares) and 18 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -119,107.

Managers listing SAM in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

28 of 28 holders

ActionFiling
AQR Capital Management LLC651,984$150m0.07%Added+211,76015 May 2026 (the filing on sec.gov)
Arrowstreet Capital LP245,249$57munder 0.1%Trimmed-26,26714 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)195,365$45munder 0.1%Trimmed-165,51015 May 2026 (the filing on sec.gov)
Southeastern Asset Management Inc118,401$27m1.34%Trimmed-29,59615 May 2026 (the filing on sec.gov)
Invesco Ltd115,612$27munder 0.1%Trimmed-1,50012 May 2026 (the filing on sec.gov)
Millennium Management LLC96,615$22munder 0.1%Added+39,73315 May 2026 (the filing on sec.gov)
Renaissance Technologies LLC93,779$22munder 0.1%Added+11,10014 May 2026 (the filing on sec.gov)
Man Group PLC77,523$18munder 0.1%Added+6,17815 May 2026 (the filing on sec.gov)
Citadel Advisors LLC53,214$12munder 0.1%Trimmed-79,72915 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.46,607$11munder 0.1%Trimmed-7,17815 May 2026 (the filing on sec.gov)
Marshall Wace LLP45,645$11munder 0.1%Added+18,72615 May 2026 (the filing on sec.gov)
Winton Group Ltd32,659$7.5m0.26%Added+3,22812 May 2026 (the filing on sec.gov)
GAMCO Investors Inc28,060$6.5m0.06%Trimmed-1014 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP26,103$6.0munder 0.1%Added+7,57315 May 2026 (the filing on sec.gov)
Acadian Asset Management LLC24,558$5.7munder 0.1%Trimmed-4,46313 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC17,974$4.1munder 0.1%Added+14,41315 May 2026 (the filing on sec.gov)
Jane Street Group LLC8,856$2.0munder 0.1%Trimmed-35,89612 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc8,101$1.9munder 0.1%Added+58615 May 2026 (the filing on sec.gov)
Two Sigma Investments LP7,500$1.7munder 0.1%Trimmed-8,76915 May 2026 (the filing on sec.gov)
AllianceBernstein LP8,218$1.6munder 0.1%Trimmed-11,80215 May 2026 (the filing on sec.gov)
Voloridge Investment Management LLC6,265$1.4munder 0.1%Trimmed-56,85815 May 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC3,837$884kunder 0.1%Added+1,92215 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd3,826$881kunder 0.1%Held018 May 2026 (the filing on sec.gov)
Quantbot Technologies LP2,432$560kunder 0.1%Newnew13 May 2026 (the filing on sec.gov)
Freestone Grove Partners LP2,373$547kunder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q4 2025 to Q1 2026, 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 (4)

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 →