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 $0.01 par value used to aggregate holder disclosures.

How many institutions held SAM - BOSTON BEER CO INC - Class A Common Stock $0.01 par value in Q3 2017?

232 institutional investors reported SAM - BOSTON BEER CO INC - Class A Common Stock $0.01 par value for Q3 2017. Use the holders table for investor-level position and value details.

BOSTON BEER CO INC - Class A Common Stock $0.01 par value (SAM)

CUSIP: 100557107

Q3 2017 13F Holders as of 30 Sep 2017

Type / Class: Equity / Class A Common Stock $0.01 par value
Shares outstanding: 8,598,125
Total 13F shares: 8,927,640
Share change: +255,619
Total reported value: $1,395,193,693
Put/Call ratio: 108%
Price per share: $156.20
Number of holders: 232
Value change: +$45,684,232
Number of buys: 109
Number of sells: 103

Quarterly Holders Quick Answers

What is CUSIP 100557107?
CUSIP 100557107 identifies SAM - BOSTON BEER CO INC - Class A Common Stock $0.01 par value 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: Q4 2017
Previous quarter: Q2 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 $0.01 par value (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
BlackRock Finance, Inc.	13F	Company	12%	1,008,916	$133,330,000	—	30 Jun 2017	13F
PRICE T ROWE ASSOCIATES INC /MD/	13F	Company	11%	936,619	$123,774,000	—	30 Jun 2017	13F
VANGUARD GROUP INC	13F	Company	8.7%	748,951	$98,974,000	—	30 Jun 2017	13F
Bank of New York Mellon Corp	13F	Company	4.6%	398,297	$52,635,000	—	30 Jun 2017	13F
Champlain Investment Partners, LLC	13F	Company	4%	346,506	$45,791,000	—	30 Jun 2017	13F
AMERICAN CENTURY COMPANIES INC	13F	Company	3.9%	333,995	$44,137,000	—	30 Jun 2017	13F
Fisher Asset Management, LLC	13F	Company	3.7%	317,551	$41,964,000	—	30 Jun 2017	13F
STATE STREET CORP	13F	Company	3.4%	292,523	$38,656,000	—	30 Jun 2017	13F
NORGES BANK	13F	Company	2.7%	228,747	$30,229,000	—	30 Jun 2017	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	2.6%	227,183	$30,023,000	—	30 Jun 2017	13F
Regal Partners Ltd	13F	Company	2.6%	223,497	$29,535,000	—	30 Jun 2017	13F
Manikay Partners, LLC	13F	Company	2.4%	210,000	$27,752,000	—	30 Jun 2017	13F
Invesco Ltd.	13F	Company	2.4%	208,414	$27,542,000	—	30 Jun 2017	13F
NORTHERN TRUST CORP	13F	Company	1.7%	149,976	$19,819,000	—	30 Jun 2017	13F
GOLDMAN SACHS GROUP INC	13F	Company	1.6%	141,441	$18,691,000	—	30 Jun 2017	13F
MORGAN STANLEY	13F	Company	1.5%	132,582	$17,521,000	—	30 Jun 2017	13F
AQR CAPITAL MANAGEMENT LLC	13F	Company	1.5%	131,164	$17,334,000	—	30 Jun 2017	13F
Fiera Capital Corp	13F	Company	1.4%	119,005	$15,727,000	—	30 Jun 2017	13F
Neuberger Berman Group LLC	13F	Company	1.2%	102,130	$13,496,000	—	30 Jun 2017	13F
OppenheimerFunds, Inc.	13F	Company	1.2%	101,965	$13,476,000	—	30 Jun 2017	13F
CITADEL ADVISORS LLC	13F	Company	0.96%	82,231	$10,867,000	—	30 Jun 2017	13F
AMERIPRISE FINANCIAL INC	13F	Company	0.95%	81,738	$10,801,000	—	30 Jun 2017	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.88%	75,682	$10,000,000	—	30 Jun 2017	13F
RK Asset Management, LLC	13F	Company	0.79%	67,831	$8,964,000	—	30 Jun 2017	13F
Boston Trust Walden Corp	13F	Company	0.77%	66,134	$8,739,000	—	30 Jun 2017	13F
PRUDENTIAL FINANCIAL INC	13F	Company	0.75%	64,822	$8,567,000	—	30 Jun 2017	13F
WELLS FARGO & COMPANY/MN	13F	Company	0.73%	62,907	$8,314,000	—	30 Jun 2017	13F
PNC FINANCIAL SERVICES GROUP, INC.	13F	Company	0.71%	61,408	$8,115,000	—	30 Jun 2017	13F
DEUTSCHE BANK AG\	13F	Company	0.67%	57,690	$7,621,000	—	30 Jun 2017	13F
BROADVIEW ADVISORS LLC	13F	Company	0.61%	52,075	$6,882,000	—	30 Jun 2017	13F
FRANKLIN RESOURCES INC	13F	Company	0.6%	51,636	$6,824,000	—	30 Jun 2017	13F
Retirement Systems of Alabama	13F	Company	0.58%	50,288	$6,646,000	—	30 Jun 2017	13F
TWO SIGMA ADVISERS, LP	13F	Company	0.58%	50,200	$6,634,000	—	30 Jun 2017	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.57%	49,387	$6,527,000	—	30 Jun 2017	13F
Arlington Value Capital, LLC	13F	Company	0.56%	47,759	$6,311,000	—	30 Jun 2017	13F
Smith, Graham & Co., Investment Advisors, LP	13F	Company	0.55%	47,238	$6,243,000	—	30 Jun 2017	13F
Brandywine Global Investment Management, LLC	13F	Company	0.55%	46,975	$6,208,000	—	30 Jun 2017	13F
PRINCIPAL FINANCIAL GROUP INC	13F	Company	0.46%	39,820	$5,262,000	—	30 Jun 2017	13F
TIAA CREF INVESTMENT MANAGEMENT LLC	13F	Company	0.45%	39,068	$5,163,000	—	30 Jun 2017	13F
BANK OF AMERICA CORP /DE/	13F	Company	0.4%	34,161	$4,514,000	—	30 Jun 2017	13F
BARCLAYS PLC	13F	Company	0.39%	33,541	$4,434,000	—	30 Jun 2017	13F
AHL Partners LLP	13F	Company	0.39%	33,243	$4,393,000	—	30 Jun 2017	13F
Contrarius Investment Management Ltd	13F	Company	0.36%	30,847	$4,076,000	—	30 Jun 2017	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	0.34%	29,650	$3,918,000	—	30 Jun 2017	13F
NEW YORK STATE COMMON RETIREMENT FUND	13F	Company	0.34%	29,074	$3,842,000	—	30 Jun 2017	13F
State of New Jersey Common Pension Fund D	13F	Company	0.31%	26,500	$3,502,000	—	30 Jun 2017	13F
CONFLUENCE INVESTMENT MANAGEMENT LLC	13F	Company	0.3%	26,083	$3,447,000	—	30 Jun 2017	13F
GAMCO INVESTORS, INC. ET AL	13F	Company	0.3%	25,555	$3,377,000	—	30 Jun 2017	13F
GUGGENHEIM CAPITAL LLC	13F	Company	0.29%	25,076	$3,314,000	—	30 Jun 2017	13F
Quantum Capital Management, LLC / NJ	13F	Company	0.29%	25,076	$3,314,000	—	30 Jun 2017	13F

Institutional Holders of BOSTON BEER CO INC - Class A Common Stock $0.01 par value (SAM) as of Q3 2017

As of 30 Sep 2017, BOSTON BEER CO INC - Class A Common Stock $0.01 par value (SAM) was held by 232 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 8,927,640 shares. The largest 10 holders included PRICE T ROWE ASSOCIATES INC /MD/, BlackRock Inc., VANGUARD GROUP INC, Bank of New York Mellon Corp, Champlain Investment Partners, LLC, Fisher Asset Management, LLC, STATE STREET CORP, DIMENSIONAL FUND ADVISORS LP, Invesco Ltd., and VGI PARTNERS PTY Ltd. This page lists 232 institutional shareholders reporting positions in this security for the Q3 2017 filing period.

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

Compare Q3 2017 vs Q2 2017 Across Filers

Q2 2017 holders

217

Q3 2017 holders

232

Holder diff

Investor	Q2 2017 Shares	Q3 2017 Shares	Share Diff	Share Chg %	Q2 2017 Value $	Q3 2017 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.