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 Q1 2019?

261 institutional investors reported SAM - BOSTON BEER CO INC - Class A Common Stock, $0.01 par value for Q1 2019. 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

Q1 2019 13F Holders as of 31 Mar 2019

Security type / class: Equity / Class A Common Stock, $0.01 par value
Total 13F shares: 8,735,283
Total 13F value: $2,571,810,182
Share change: +129,640
Put/Call ratio: 161%
SEC-reported price per share: $294.73
Number of holders: 261
Value change: +$46,041,899
Number of buys: 115
Number of sells: 121
Shares outstanding: 8,346,028

Security key

100557107

Report period

Q1 2019

Institutions

261

Top holders

SAM full security history Ownership snapshot Full 13F holder table BOSTON BEER CO INC SEC filings BOSTON BEER CO INC company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Ownership snapshot

Top reported holders 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. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

PRICE T ROWE ASSOCIATES I...

Disclosed value leader

PRICE T ROWE ASSOCIATES I...

Comparable rows

15/15

Latest evidence

31 Dec 2018

13F Lead comparable stake: 16% Showing 1-6 of 15 holder rows.

Quick read

PRICE T ROWE ASSOCIATES INC /MD/ leads the comparable SEC ownership view at 16%.

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 PRICE T ROWE ASSOCIATES INC /MD/'s linked filing trail.

Comparable ownership Top 5

PRICE T ROWE ASSOCIATES INC /MD/ 16%

BlackRock Finance, Inc. 12%

VANGUARD GROUP INC 11%

AQR CAPITAL MANAGEMENT LLC 3.7%

Fisher Asset Management, LLC 3.7%

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
PRICE T ROWE ASSOCIATES INC /MD/	13F Company 13F	16%	$327,624,000 1,360,337 shares	—	31 Dec 2018
BlackRock Finance, Inc.	13F Company 13F	12%	$234,331,000 972,983 shares	—	31 Dec 2018
VANGUARD GROUP INC	13F Company 13F	11%	$225,610,000 936,760 shares	—	31 Dec 2018
AQR CAPITAL MANAGEMENT LLC	13F Company 13F	3.7%	$75,354,000 312,879 shares	—	31 Dec 2018
Fisher Asset Management, LLC	13F Company 13F	3.7%	$75,199,000 312,238 shares	—	31 Dec 2018
STATE STREET CORP	13F Company 13F	3.2%	$63,952,000 265,536 shares	—	31 Dec 2018

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 Q1 2019

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

261

8,735,283

Rows available

261

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 Q1 2019 vs Q1 2019 Across Filers

Q1 2019 holders

261

Q1 2019 holders

261

Holder diff

Investor	Q1 2019 Shares	Q1 2019 Shares	Share Diff	Share Chg %	Q1 2019 value	Q1 2019 value	Value change	Value Chg %