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SAM · Boston Beer Co Inc

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$190.82 +3.81 (+2.04%) At close · Aug 20
Market Cap
$1.95B
Shares
10.29M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 330
Total Value: $1,557,880,822
Total Shares: 8,800,251

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 330 13F filers · Δ vs Mar 31, 2026
Top Holder
11.5%
Sep 2023 → Jun 2026 · range 9.7% – 17.7%
+1.8 pts
Top 5
34.0%
Sep 2023 → Jun 2026 · range 33.9% – 53.0%
+0.1 pts
Top 10
52.0%
Sep 2023 → Jun 2026 · range 49.1% – 63.8%
+2.6 pts
HHI
378
Sep 2023 → Jun 2026 · range 358 – 709
Broadly held+20

Quarterly Activity

vs Mar 31, 2026
New
47
Increased
112
Decreased
112
Sold Out
87
Unchanged
59
Holder count: -40
Institutional value: -14.7%
Shares held: +11.1%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 342
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 949870 CUSIP 100557107 13F (30d) 316 filings 287 filers Visit website Investor relations