The Boston Beer Company, Inc.
US ˙ NYSE ˙ US1005571070

SecuritySAM / The Boston Beer Company, Inc.
InstitutionXTX Topco Ltd
Latest Disclosed Ownership5,492 shares
Latest Disclosed Value $ 1,265,357
XTX Topco Ltd reports 40.59% decrease in ownership of SAM / The Boston Beer Company, Inc.

On May 15, 2026 - XTX Topco Ltd filed a 13F-HR form disclosing ownership of 5,492 shares of The Boston Beer Company, Inc. (US:SAM) valued at $1,265,357 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 9,245 shares of The Boston Beer Company, Inc.. This represents a change in shares of -40.59% during the quarter. The current value of the position is $899,370 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F BOSTON BEER CL A 100557107 5,492 -3,753 -40.59 1,265 -29.84 0.0220
2026-02-17 2025-12-31 13F BOSTON BEER CL A 100557107 9,245 8,268 846.26 1,804 775.24 0.0474
2025-11-14 2025-09-30 13F BOSTON BEER CL A 100557107 977 -4,139 -80.90 207 -78.89 0.0107
2025-08-12 2025-06-30 13F BOSTON BEER CL A 100557107 5,116 4,156 432.92 976 326.20 0.0405
2025-05-08 2025-03-31 13F BOSTON BEER CL A 100557107 960 -5,202 -84.42 229 -87.61 0.0117
2025-02-13 2024-12-31 13F BOSTON BEER CL A 100557107 6,162 1,260 25.70 1,848 30.42 0.1519
2024-11-14 2024-09-30 13F BOSTON BEER CL A 100557107 4,902 935 23.57 1,417 17.11 0.1025
2024-08-12 2024-06-30 13F BOSTON BEER CL A 100557107 3,967 1,666 72.40 1,210 72.86 0.1036
2024-05-13 2024-03-31 13F BOSTON BEER CL A 100557107 2,301 2,301 700 0.0944
2023-08-14 2023-06-30 13F BOSTON BEER CL A 100557107 0 -1,030 -100.00 0 -100.00
2023-05-12 2023-03-31 13F BOSTON BEER CL A 100557107 1,030 -348 -25.25 339 -25.55 0.0710
2023-02-14 2022-12-31 13F BOSTON BEER CL A 100557107 1,378 -35 -2.48 454 -0.66 0.0964
2022-11-14 2022-09-30 13F BOSTON BEER CL A 100557107 1,413 1,413 457 0.1131
2021-11-12 2021-09-30 13F BOSTON BEER CL A 100557107 0 -211 -100.00 0 -100.00
2021-08-12 2021-06-30 13F BOSTON BEER CL A 100557107 211 -140 -39.89 215 -49.17 0.0724
2021-05-14 2021-03-31 13F BOSTON BEER CL A 100557107 351 351 423 0.2055
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.