BOSTON BEER INC SAM
CL A · Common Stock · CUSIP 100557107 · ISIN US1005571070
- SectorConsumer staples
- IndustryMalt Beverages
- HeadquartersBoston, MA
- Founded1985
- Websitebostonbeer.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($2.3m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $230.33. Options: 5 managers hold calls ($13.9m notional), 6 hold puts ($20.2m).
Trends to Q1 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 301 |
| Q4 2022 | 320 |
| Q1 2023 | 304 |
| Q2 2023 | 298 |
| Q3 2023 | 325 |
| Q4 2023 | 343 |
| Q1 2024 | 327 |
| Q2 2024 | 326 |
| Q3 2024 | 333 |
| Q4 2024 | 347 |
| Q1 2025 | 329 |
| Q2 2025 | 348 |
| Q3 2025 | 356 |
| Q4 2025 | 347 |
| Q1 2026 | 370 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q2 2024 | 140 | 175 |
| Q3 2024 | 133 | 164 |
| Q4 2024 | 147 | 148 |
| Q1 2025 | 164 | 153 |
| Q2 2025 | 182 | 144 |
| Q3 2025 | 179 | 173 |
| Q4 2025 | 120 | 220 |
| Q1 2026 | 198 | 136 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q2 2025 | $59.5m | $35.1m | 0.59 |
| Q3 2025 | $33.3m | $25.7m | 0.77 |
| Q4 2025 | $11.3m | $13.0m | 1.14 |
| Q1 2026 | $13.9m | $20.2m | 1.46 |
Biggest buyers
| AQR CAPITAL MANAGEMENT LLC | Added | +211.8k |
| Quantinno Capital Management LP | Added | +140.2k |
| AMERICAN CENTURY COMPANIES INC | Added | +96.5k |
| GOLDMAN SACHS GROUP INC | Added | +89.2k |
| T. Rowe Price Investment Management, Inc. | Added | +78.5k |
| Prescott General Partners LLC | New | +45.0k |
| BlackRock, Inc. | Added | +44.7k |
| MILLENNIUM MANAGEMENT LLC | Added | +39.7k |
| Global Alpha Capital Management Ltd. | Added | +24.5k |
| MORGAN STANLEY | Added | +20.2k |
Biggest sellers
| FMR LLC | Reduced | -165.5k |
| CITADEL ADVISORS LLC | Reduced | -79.7k |
| Gotham Asset Management, LLC | Reduced | -78.6k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | Reduced | -56.9k |
| Monaco Asset Management SAM | Reduced | -51.9k |
| JANE STREET GROUP, LLC | Reduced | -35.9k |
| SOUTHEASTERN ASSET MANAGEMENT INC/TN/ | Reduced | -29.6k |
| Trexquant Investment LP | Reduced | -26.3k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Reduced | -26.3k |
| DARK FOREST CAPITAL MANAGEMENT LP | Sold out | -24.6k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $7.4m32.0k shares |
| CITADEL ADVISORS LLC | Reduced | $3.6m15.7k shares |
| IMC-Chicago, LLC | New | $2.6m11.1k shares |
| JANE STREET GROUP, LLC | Reduced | $253.4k1.1k shares |
| SIMPLEX TRADING, LLC | Added | $92.2k400 shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $11.6m50.3k shares |
| CITADEL ADVISORS LLC | Reduced | $4.0m17.2k shares |
| IMC-Chicago, LLC | New | $2.5m11.0k shares |
| GROUP ONE TRADING LLC | New | $1.2m5.0k shares |
| SIMPLEX TRADING, LLC | Added | $760.3k3.3k shares |
| TWO SIGMA INVESTMENTS, LP | New | $230.4k1.0k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| KOCH C JAMES 13G · exempt (held before listing) +1.6 pts · filed 2026-02-11 | 21.6% |
| BlackRock, Inc. 13G · institution +2.1 pts · filed 2026-10-27 | 13.4% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 7.6% |
| AQR CAPITAL MANAGEMENT LLC 13G · institution -1.3 pts · filed 2026-08-13 | 6.5% |
Fell to 5% or below in the last year: MILLENNIUM MANAGEMENT LLC (4.9%, 2026-07-22), FMR LLC (2.3%, 2026-05-06), VANGUARD GROUP INC (0.0%, 2026-03-26; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC)
Insider purchases and sales in Q1 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q2 2024 | 0 | — | 1 | $30.7k | — |
| Q3 2024 | 0 | — | 1 | $34.6k | — |
| Q4 2024 | 0 | — | 1 | $55.7k | — |
| Q1 2025 | 0 | — | 2 | $818.3k | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 1 | $131.5k | — |
| Q4 2025 | 0 | — | 1 | $642.0k | — |
| Q1 2026 | 0 | — | 0 | — | — |
None reported in Q1 2026.
Holders, Q1 2026
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.00% of their portfolio | 770.2k $177.5m | Added +44.7k |
| AQR CAPITAL MANAGEMENT LLC 0.07% of their portfolio | 652.0k $150.2m | Added +211.8k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.01% of their portfolio | 634.5k $146.2m | First filing |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 340.9k $78.5m | First filing |
| AMERICAN CENTURY COMPANIES INC 0.03% of their portfolio | 288.1k $66.4m | Added +96.5k |
| DIMENSIONAL FUND ADVISORS LP 0.01% of their portfolio | 273.6k $63.0m | Added +15.6k |
| STATE STREET CORP 0.00% of their portfolio | 255.2k $58.8m | Added +898 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.03% of their portfolio | 245.2k $56.5m | Reduced -26.3k |
| Quantinno Capital Management LP 0.09% of their portfolio | 230.6k $53.1m | Added +140.2k |
| UBS Group AG 0.01% of their portfolio | 218.6k $50.4m | Added +2.0k |
| FMR LLC 0.00% of their portfolio | 195.4k $45.0m | Reduced -165.5k |
| Gotham Asset Management, LLC 0.12% of their portfolio | 170.3k $39.2m | Reduced -78.6k |
| Global Alpha Capital Management Ltd. 2.04% of their portfolio | 147.5k $34.0m | Added +24.5k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 145.0k $33.4m | Added +89.2k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 142.1k $32.8m | Added +2.9k |
| MORGAN STANLEY 0.00% of their portfolio | 134.5k $31.0m | Added +20.2k |
| SOUTHEASTERN ASSET MANAGEMENT INC/TN/ 1.34% of their portfolio | 118.4k $27.3m | Reduced -29.6k |
| Invesco Ltd. 0.00% of their portfolio | 115.6k $26.6m | Reduced -1.5k |
| Qube Research & Technologies Ltd 0.04% of their portfolio | 111.3k $25.6m | Reduced -21.5k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 107.0k $24.6m | Added +8.2k |
| MILLENNIUM MANAGEMENT LLC 0.02% of their portfolio | 96.6k $22.3m | Added +39.7k |
| RENAISSANCE TECHNOLOGIES LLC 0.03% of their portfolio | 93.8k $21.6m | Added +11.1k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 91.5k $21.1m | Added +626 |
| Woodson Capital Management, LP 3.35% of their portfolio | 90.0k $20.7m | Reduced -10.0k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 79.0k $18.2m | Added +4.1k |
| T. Rowe Price Investment Management, Inc. 0.01% of their portfolio | 78.5k $18.1m | Added +78.5k |
| Man Group plc 0.04% of their portfolio | 77.5k $17.9m | Added +6.2k |
| SOUTHERNSUN ASSET MANAGEMENT, LLC 2.50% of their portfolio | 74.8k $17.2m | Reduced -708 |
| Calamos Advisors LLC 0.06% of their portfolio | 66.7k $15.4m | Added +1.4k |
| LOOMIS SAYLES & CO L P 0.02% of their portfolio | 63.5k $14.6m | Reduced -1.6k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 57.0k $13.1m | Reduced -3.3k |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 55.6k $12.8m | Reduced -9.9k |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 53.2k $12.3m | Reduced -79.7k |
| FIRST TRUST ADVISORS LP 0.01% of their portfolio | 51.7k $11.9m | Added +13.3k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 47.7k $11.0m | First filing |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 46.6k $10.7m | Reduced -7.2k |
| MARSHALL WACE, LLP 0.01% of their portfolio | 45.6k $10.5m | Added +18.7k |
| Corient Private Wealth LP 0.01% of their portfolio | 45.4k $10.4m | Added +15.5k |
| Prescott General Partners LLC 0.76% of their portfolio | 45.0k $10.4m | New |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 44.4k $10.2m | Reduced -2.4k |
| Crawford Fund Management, LLC 2.96% of their portfolio | 39.4k $9.1m | Reduced -22.1k |
| Pacer Advisors, Inc. 0.02% of their portfolio | 37.5k $8.6m | Reduced -4.3k |
| IEQ CAPITAL, LLC 0.04% of their portfolio | 36.9k $8.5m | Added +12.7k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 33.9k $7.8m | Added +10.8k |
| WINTON GROUP Ltd 0.26% of their portfolio | 32.7k $7.5m | Added +3.2k |
| Trexquant Investment LP 0.05% of their portfolio | 29.8k $6.9m | Reduced -26.3k |
| GAMCO INVESTORS, INC. ET AL 0.06% of their portfolio | 28.1k $6.5m | Reduced -10 |
| NOMURA HOLDINGS INC 0.05% of their portfolio | 27.2k $6.3m | Reduced -19.4k |
| Creative Planning 0.00% of their portfolio | 26.5k $6.1m | Added +14.6k |
| GABELLI FUNDS LLC 0.04% of their portfolio | 26.4k $6.1m | Reduced -600 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.01% of their portfolio | 26.1k $6.0m | Added +7.6k |
| ALGERT GLOBAL LLC 0.09% of their portfolio | 24.6k $5.7m | Reduced -130 |
| ACADIAN ASSET MANAGEMENT LLC 0.01% of their portfolio | 24.6k $5.7m | Reduced -4.5k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 23.3k $5.4m | Added +173 |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 19.1k $4.4m | Added +11.0k |
| HRT FINANCIAL LP 0.02% of their portfolio | 19.1k $4.4m | Added +12.3k |
| Nuveen, LLC 0.00% of their portfolio | 18.6k $4.3m | Added +1.2k |
| Squarepoint Ops LLC 0.01% of their portfolio | 18.0k $4.1m | Added +14.4k |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 17.2k $4.0m | Added +640 |
| ONTARIO TEACHERS PENSION PLAN BOARD 0.11% of their portfolio | 17.1k $3.9m | Reduced -13.6k |
| Swiss National Bank 0.00% of their portfolio | 16.1k $3.7m | Reduced -400 |
| Cerity Partners LLC 0.01% of their portfolio | 16.1k $3.7m | Added +7.7k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 15.9k $3.7m | Added +200 |
| Savoir Faire Capital Management, L.P. 2.11% of their portfolio | 15.1k $3.5m | Reduced -6.6k |
| CWM, LLC 0.01% of their portfolio | 12.4k $2.8m | Added +3.2k |
| Mariner, LLC 0.00% of their portfolio | 11.4k $2.6m | Added +8.3k |
| BARCLAYS PLC 0.00% of their portfolio | 11.4k $2.6m | Reduced -4.0k |
| Cardinal Capital Management 0.34% of their portfolio | 11.4k $2.6m | Added +1.8k |
| Legal & General Group Plc 0.00% of their portfolio | 11.4k $2.6m | Reduced -1.9k |
| Jefferies Financial Group Inc. 0.03% of their portfolio | 11.1k $2.6m | New |
| Focus Partners Wealth 0.00% of their portfolio | 11.1k $2.6m | Added +7.1k |
| Oak Thistle LLC 0.24% of their portfolio | 10.7k $2.5m | Added +5.4k |
| Quantedge Capital Pte Ltd 1.31% of their portfolio | 10.4k $2.4m | New |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 10.0k $2.3m | Added +2.1k |
| BCGM Wealth Management, LLC 0.58% of their portfolio | 9.9k $2.3m | Added +339 |
| CenterBook Partners LP 0.12% of their portfolio | 9.8k $2.3m | Added +4.1k |
| Retirement Systems of Alabama 0.01% of their portfolio | 9.4k $2.2m | Added +198 |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC 0.00% of their portfolio | 9.3k $1.9m | Added +2.1k |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 9.2k $2.1m | Reduced -2.7k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 8.9k $2.0m | Reduced -35.9k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 8.2k $1.6m | Reduced -11.8k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 8.1k $1.9m | Added +586 |
| WEDGE CAPITAL MANAGEMENT L L P/NC 0.03% of their portfolio | 8.0k $1.8m | Reduced -1.6k |
| MERCER GLOBAL ADVISORS INC /ADV 0.00% of their portfolio | 7.7k $1.8m | Added +4.6k |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 7.5k $1.7m | Reduced -8.8k |
| GAGNON SECURITIES LLC 0.39% of their portfolio | 7.2k $1.7m | Added +884 |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 7.2k $1.7m | Added +2.5k |
| Odyssean, LLC 0.54% of their portfolio | 6.5k $1.5m | New |
| Summit Trail Advisors, LLC 0.02% of their portfolio | 6.4k $1.5m | Added +2.4k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.01% of their portfolio | 6.3k $1.4m | Reduced -56.9k |
| Connor, Clark & Lunn Investment Management Ltd. 0.00% of their portfolio | 6.1k $1.4m | Reduced -6.0k |
| VANGUARD ASSET MANAGEMENT, Ltd 0.00% of their portfolio | 6.1k $1.4m | First filing |
| Horizon Investments, LLC 0.02% of their portfolio | 6.0k $1.4m | New |
| LOS ANGELES CAPITAL MANAGEMENT LLC 0.01% of their portfolio | 5.9k $1.4m | Unchanged |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.00% of their portfolio | 5.9k $1.4m | Reduced -2.1k |
| denkapparat Operations GmbH 0.54% of their portfolio | 5.6k $1.3m | Added +806 |
| XTX Topco Ltd 0.02% of their portfolio | 5.5k $1.3m | Reduced -3.8k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 5.4k $1.2m | Reduced -135 |
| STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio | 5.4k $1.2m | Added +2.8k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 5.3k $1.2m | Reduced -184 |