What does CUSIP 100557107 represent in this 13F holders report?

CUSIP 100557107 is the security identifier for SAM - BOSTON BEER CO INC - CLASS A COMMON STOCK used to aggregate holder disclosures.

How many institutions held SAM - BOSTON BEER CO INC - CLASS A COMMON STOCK in Q1 2018?

243 institutional investors reported SAM - BOSTON BEER CO INC - CLASS A COMMON STOCK for Q1 2018. Use the holders table for investor-level position and value details.

BOSTON BEER CO INC - CLASS A COMMON STOCK (SAM)

CUSIP: 100557107

Q1 2018 13F Holders as of 31 Mar 2018

Type / Class: Equity / CLASS A COMMON STOCK
Shares outstanding: 8,494,151
Total 13F shares: 8,697,278
Share change: +120,161
Total reported value: $1,644,305,774
Put/Call ratio: 86%
Price per share: $189.05
Number of holders: 243
Value change: +$22,212,586
Number of buys: 107
Number of sells: 129

Quarterly Holders Quick Answers

What is CUSIP 100557107?
CUSIP 100557107 identifies SAM - BOSTON BEER CO INC - CLASS A COMMON STOCK in SEC institutional holdings data.

Need full ownership history?
Open the full security ownership history page.

Next holder-history checks

These links keep the next click tied to holder verification, nearby quarters, or outside-13F ownership context.

Back to full security ownership history for the broader multi-quarter picture.
Latest 13F filings for newly reported positions across managers.
Latest Schedule 13D/13G reports for ownership changes outside the 13F cadence.
SEC investors directory for manager drilldown.

Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q2 2018
Previous quarter: Q4 2017

Recent filing periods for CUSIP 100557107:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of SAM - BOSTON BEER CO INC - CLASS A COMMON STOCK (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
PRICE T ROWE ASSOCIATES INC /MD/	13F	Company	12%	1,021,496	$195,208,000	—	31 Dec 2017	13F
BlackRock Finance, Inc.	13F	Company	10%	881,963	$168,542,000	—	31 Dec 2017	13F
VANGUARD GROUP INC	13F	Company	8.7%	735,372	$140,530,000	—	31 Dec 2017	13F
Bank of New York Mellon Corp	13F	Company	4.8%	411,640	$78,664,000	—	31 Dec 2017	13F
Fisher Asset Management, LLC	13F	Company	3.9%	331,658	$63,380,000	—	31 Dec 2017	13F
STATE STREET CORP	13F	Company	3.8%	322,329	$61,597,000	—	31 Dec 2017	13F
Champlain Investment Partners, LLC	13F	Company	3.1%	267,290	$51,079,000	—	31 Dec 2017	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	2.7%	231,404	$44,221,000	—	31 Dec 2017	13F
AQR CAPITAL MANAGEMENT LLC	13F	Company	2.4%	208,005	$39,750,000	—	31 Dec 2017	13F
Regal Partners Ltd	13F	Company	2.3%	198,410	$37,916,000	—	31 Dec 2017	13F
Invesco Ltd.	13F	Company	2.3%	197,833	$37,805,000	—	31 Dec 2017	13F
TWO SIGMA ADVISERS, LP	13F	Company	1.7%	145,679	$27,839,000	—	31 Dec 2017	13F
NORTHERN TRUST CORP	13F	Company	1.6%	133,226	$25,459,000	—	31 Dec 2017	13F
PRUDENTIAL FINANCIAL INC	13F	Company	1.6%	131,993	$25,224,000	—	31 Dec 2017	13F
TWO SIGMA INVESTMENTS, LP	13F	Company	1.5%	130,384	$24,916,000	—	31 Dec 2017	13F
GOLDMAN SACHS GROUP INC	13F	Company	1.5%	123,880	$23,674,000	—	31 Dec 2017	13F
AMERIPRISE FINANCIAL INC	13F	Company	1.3%	106,871	$20,421,000	—	31 Dec 2017	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	1.2%	104,438	$19,958,000	—	31 Dec 2017	13F
PANAGORA ASSET MANAGEMENT INC	13F	Company	1.2%	100,962	$19,294,000	—	31 Dec 2017	13F
Neuberger Berman Group LLC	13F	Company	1.1%	94,635	$18,085,000	—	31 Dec 2017	13F
TEACHERS ADVISORS, LLC	13F	Company	1%	85,321	$16,305,000	—	31 Dec 2017	13F
MORGAN STANLEY	13F	Company	0.95%	81,018	$15,482,000	—	31 Dec 2017	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.93%	79,138	$15,124,000	—	31 Dec 2017	13F
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	13F	Company	0.92%	78,119	$14,928,541	—	31 Dec 2017	13F
VICTORY CAPITAL MANAGEMENT INC	13F	Company	0.91%	77,654	$14,840,000	—	31 Dec 2017	13F
JPMORGAN CHASE & CO	13F	Company	0.82%	69,694	$13,318,000	—	31 Dec 2017	13F
Boston Trust Walden Corp	13F	Company	0.77%	65,497	$12,517,000	—	31 Dec 2017	13F
RK Asset Management, LLC	13F	Company	0.76%	64,947	$12,411,000	—	31 Dec 2017	13F
ARMISTICE CAPITAL, LLC	13F	Company	0.75%	64,000	$12,230,000	—	31 Dec 2017	13F
ROYAL BANK OF CANADA	13F	Company	0.72%	61,491	$11,751,000	—	31 Dec 2017	13F
Numeric Investors LLC	13F	Company	0.69%	58,961	$11,267,000	—	31 Dec 2017	13F
AHL Partners LLP	13F	Company	0.67%	56,668	$10,829,000	—	31 Dec 2017	13F
Smith, Graham & Co., Investment Advisors, LP	13F	Company	0.65%	55,208	$10,550,000	—	31 Dec 2017	13F
FRANKLIN RESOURCES INC	13F	Company	0.63%	53,710	$10,265,000	—	31 Dec 2017	13F
DEUTSCHE BANK AG\	13F	Company	0.63%	53,340	$10,191,000	—	31 Dec 2017	13F
BROADVIEW ADVISORS LLC	13F	Company	0.61%	51,800	$9,899,000	—	31 Dec 2017	13F
UBS Group AG	13F	Company	0.61%	51,770	$9,893,000	—	31 Dec 2017	13F
WELLS FARGO & COMPANY/MN	13F	Company	0.6%	51,154	$9,775,000	—	31 Dec 2017	13F
ACADIAN ASSET MANAGEMENT LLC	13F	Company	0.5%	42,129	$8,051,000	—	31 Dec 2017	13F
NEW AMSTERDAM PARTNERS LLC/NY	13F	Company	0.49%	41,832	$7,994,000	—	31 Dec 2017	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	0.49%	41,800	$7,988,000	—	31 Dec 2017	13F
AMERICAN CENTURY COMPANIES INC	13F	Company	0.49%	41,727	$7,974,000	—	31 Dec 2017	13F
D. E. Shaw & Co., Inc.	13F	Company	0.47%	40,050	$7,653,000	—	31 Dec 2017	13F
TIAA CREF INVESTMENT MANAGEMENT LLC	13F	Company	0.46%	39,429	$7,535,000	—	31 Dec 2017	13F
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	0.46%	38,709	$7,398,000	—	31 Dec 2017	13F
PRINCIPAL FINANCIAL GROUP INC	13F	Company	0.44%	37,306	$7,129,000	—	31 Dec 2017	13F
NORGES BANK	13F	Company	0.41%	35,103	$6,708,000	—	31 Dec 2017	13F
Brandywine Global Investment Management, LLC	13F	Company	0.4%	33,919	$6,482,000	—	31 Dec 2017	13F
BNP Paribas Asset Management Holding S.A.	13F	Company	0.37%	31,190	$5,960,000	—	31 Dec 2017	13F
BARCLAYS PLC	13F	Company	0.35%	29,754	$5,685,000	—	31 Dec 2017	13F

Institutional Holders of BOSTON BEER CO INC - CLASS A COMMON STOCK (SAM) as of Q1 2018

As of 31 Mar 2018, BOSTON BEER CO INC - CLASS A COMMON STOCK (SAM) was held by 243 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 8,697,278 shares. The largest 10 holders included PRICE T ROWE ASSOCIATES INC /MD/, BlackRock Inc., VANGUARD GROUP INC, Bank of New York Mellon Corp, Fisher Asset Management, LLC, STATE STREET CORP, AQR CAPITAL MANAGEMENT LLC, Champlain Investment Partners, LLC, DIMENSIONAL FUND ADVISORS LP, and Invesco Ltd.. This page lists 243 institutional shareholders reporting positions in this security for the Q1 2018 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q1 2018 vs Q4 2017 Across Filers

Q4 2017 holders

260

Q1 2018 holders

243

Holder diff

-17

Investor	Q4 2017 Shares	Q1 2018 Shares	Share Diff	Share Chg %	Q4 2017 Value $	Q1 2018 Value $	Value Diff $	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.