Security key
100557107
BOSTON BEER CO INC - Class A Common Stock, par value $0.01 per share (SAM)
CUSIP: 100557107
Q4 2025 13F Holders as of 31 Dec 2025
- Security type / class
- Equity / Class A Common Stock, par value $0.01 per share
- Total 13F shares
- 7,554,091
- Total 13F value
- $1,474,298,579
- Share change
- -332,898
- Put/Call ratio
- 110%
- SEC-reported price per share
- $195.13
- Number of holders
- 344
- Value change
- -$73,150,912
- Number of buys
- 121
- Number of sells
- 218
- Shares outstanding
- 8,396,184
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2025
Institutions
344
Top holders
10
SAM full security history
Ownership snapshot
Full 13F holder table
BOSTON BEER CO INC SEC filings
BOSTON BEER CO INC company facts
Broader feeds
Ownership snapshot
Top reported holders of SAM - BOSTON BEER CO INC - Class A Common Stock, par value $0.01 per share (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
C. James Koch
Disclosed value leader
C. James Koch
Comparable rows
15/15
Latest evidence
31 Dec 2025
13D/G
3/4/5
13F
Lead comparable stake: 22%
13D/G row: C. James Koch
Showing 1-6 of 15 holder rows.
Quick read
C. James Koch leads the comparable SEC ownership view at 22%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens C. James Koch's linked filing trail.
Comparable ownership
Top 5
C. James Koch
22%
VANGUARD GROUP INC
12%
T. Rowe Price Investment Manageme...
0.6%
BlackRock, Inc.
9.3%
AQR CAPITAL MANAGEMENT LLC
7.7%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| C. James Koch |
13D/G
3/4/5
Chairman, Director, 10%+ Owner
|
22%
|
$443,232,331
2,271,472 shares
|
$0 | 31 Dec 2025 |
| VANGUARD GROUP INC |
13D/G
13F
The Vanguard Group · Company
|
12%
|
$202,775,974
1,039,184 shares
|
+$24,732,923 | 31 Dec 2025 |
| T. Rowe Price Investment Management, Inc. |
13D/G
|
0.6%
|
$12,546,221
52,713 shares
|
$0 | 31 Mar 2025 |
| BlackRock, Inc. |
13F
Company
|
9.3%
|
$165,403,168
782,344 shares
|
— | 30 Sep 2025 |
| AQR CAPITAL MANAGEMENT LLC |
13F
Company
|
7.7%
|
$136,801,426
647,060 shares
|
— | 30 Sep 2025 |
| FMR LLC |
13F
Company
|
4.6%
|
$82,415,754
389,820 shares
|
— | 30 Sep 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q4 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
344
Shares
7,554,091
Rows available
344
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
351
Q4 2025 holders
344
Holder diff
-7
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 value | Q4 2025 value | Value change | Value Chg % |
|---|