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Buy Day today: Neutral (51) Mixed market breadth · no major macro event
SAM

Boston Beer Company Inc

Consumer Defensive · Beverages - Brewers

171.60$ -0.3% vs. previous close Closing price · As of: Sep 18, 2026

Ownership

Ownership Structure

Who owns Boston Beer Company Inc (SAM)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 82.4% of the shares are freely tradable; institutional investors hold 95.6%.

Institutional ownership ?Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings. 95.6%
Insiders ?Share of the stock held by the executives, founders and major shareholders of the company itself. 9.2%
Float ?Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders. 82.4%
Short % of float ?Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices. 22.0%
Shares Outstanding ?Total number of shares issued. Price times share count gives market cap. 8Mio.

Largest Shareholders

Institutions

Institutions SAM
Name Stake (%) Shares Change (%) Date
BlackRock Inc 7.48 770,250 +6.2 03/31/2026
AQR Capital Management LLC 6.34 651,984 +48.1 03/31/2026
Vanguard Portfolio Management, LLC 6.16 634,469 +0.0 03/31/2026
American Century Companies Inc 3.74 385,326 +33.8 06/30/2026
Vanguard Capital Management, LLC 3.31 340,903 +0.0 03/31/2026
Dimensional Fund Advisors, Inc. 3.12 320,885 +17.3 06/30/2026
Millennium Management LLC 2.75 283,512 +193.4 06/30/2026
Global Alpha Capital Management Ltd. 2.60 267,567 +81.4 06/30/2026

Funds

Funds SAM
Name Stake (%) Shares Change (%) Date
Avantis US Small Cap Value ETF 3.56 365,952 +0.1 08/31/2026
iShares Core S&P Mid-Cap ETF 2.55 262,275 +0.0 08/31/2026

Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.

Data as of: September 18, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)

Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.

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