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 2021?

411 institutional investors reported SAM - BOSTON BEER CO INC - Class A Common Stock $0.01 par value for Q1 2021. 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 2021 13F Holders as of 31 Mar 2021

Type / Class: Equity / Class A Common Stock $0.01 par value
Shares outstanding: 8,598,125
Total 13F shares: 8,790,285
Share change: +197,078
Total reported value: $10,602,896,052
Put/Call ratio: 200%
Price per share: $1206.28
Number of holders: 411
Value change: +$268,908,755
Number of buys: 189
Number of sells: 189

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.

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Explore More Reporting Periods

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

Newer quarter: Q2 2021
Previous quarter: Q4 2020

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
PRICE T ROWE ASSOCIATES INC /MD/	13F	Company	14%	1,222,339	$1,215,359,000	—	31 Dec 2020	13F
BlackRock Finance, Inc.	13F	Company	11%	914,480	$909,259,000	—	31 Dec 2020	13F
VANGUARD GROUP INC	13F	Company	9.8%	843,756	$838,939,000	—	31 Dec 2020	13F
Durable Capital Partners LP	13F	Company	6.7%	580,187	$576,874,000	—	31 Dec 2020	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	4.3%	373,500	$371,367,000	—	31 Dec 2020	13F
FMR LLC	13F	Company	4.3%	368,850	$366,744,000	—	31 Dec 2020	13F
JPMORGAN CHASE & CO	13F	Company	3.4%	295,807	$294,119,000	—	31 Dec 2020	13F
STATE STREET CORP	13F	Company	2.5%	213,450	$212,231,000	—	31 Dec 2020	13F
Invesco Ltd.	13F	Company	2.4%	204,123	$202,959,000	—	31 Dec 2020	13F
MACQUARIE GROUP LTD	13F	Company	2.3%	193,686	$192,580,000	—	31 Dec 2020	13F
AMERICAN CENTURY COMPANIES INC	13F	Company	2.1%	184,379	$183,326,000	—	31 Dec 2020	13F
Artisan Partners Limited Partnership	13F	Company	1.9%	160,536	$159,619,000	—	31 Dec 2020	13F
CITADEL ADVISORS LLC	13F	Company	1.6%	137,601	$136,815,000	—	31 Dec 2020	13F
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	1.5%	133,053	$132,294,000	—	31 Dec 2020	13F
Fisher Asset Management, LLC	13F	Company	1.4%	121,102	$120,411,000	—	31 Dec 2020	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	1.3%	113,701	$113,053,000	—	31 Dec 2020	13F
VICTORY CAPITAL MANAGEMENT INC	13F	Company	1.3%	111,855	$111,216,000	—	31 Dec 2020	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	1.2%	105,540	$104,956,000	—	31 Dec 2020	13F
GOLDMAN SACHS GROUP INC	13F	Company	1.2%	98,901	$98,337,000	—	31 Dec 2020	13F
MORGAN STANLEY	13F	Company	1.1%	97,220	$96,663,000	—	31 Dec 2020	13F
WELLS FARGO & COMPANY/MN	13F	Company	1.1%	97,020	$96,466,000	—	31 Dec 2020	13F
MARSHALL WACE, LLP	13F	Company	1.1%	96,923	$96,369,000	—	31 Dec 2020	13F
Bank of New York Mellon Corp	13F	Company	1%	90,256	$89,740,000	—	31 Dec 2020	13F
LORD, ABBETT & CO. LLC	13F	Company	1%	87,319	$86,821,000	—	31 Dec 2020	13F
NORGES BANK	13F	Company	0.92%	79,450	$78,996,000	—	31 Dec 2020	13F
NORTHERN TRUST CORP	13F	Company	0.86%	73,722	$73,300,000	—	31 Dec 2020	13F
Man Group plc	13F	Company	0.64%	55,014	$54,700,000	—	31 Dec 2020	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	0.63%	53,765	$53,458,000	—	31 Dec 2020	13F
Candlestick Capital Management LP	13F	Company	0.6%	52,000	$51,703,000	—	31 Dec 2020	13F
TWO SIGMA INVESTMENTS, LP	13F	Company	0.59%	50,549	$50,260,000	—	31 Dec 2020	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.57%	48,783	$48,505,000	—	31 Dec 2020	13F
Nuveen Asset Management, LLC	13F	Company	0.53%	45,413	$45,154,000	—	31 Dec 2020	13F
AQR CAPITAL MANAGEMENT LLC	13F	Company	0.47%	40,287	$40,057,000	—	31 Dec 2020	13F
Atreides Management, LP	13F	Company	0.41%	35,300	$35,098,000	—	31 Dec 2020	13F
Point72 Asset Management, L.P.	13F	Company	0.41%	35,140	$34,939,000	—	31 Dec 2020	13F
BANK OF AMERICA CORP /DE/	13F	Company	0.35%	29,889	$29,719,000	—	31 Dec 2020	13F
PARAMETRIC PORTFOLIO ASSOCIATES LLC	13F	Company	0.33%	28,564	$28,401,000	—	31 Dec 2020	13F
PRINCIPAL FINANCIAL GROUP INC	13F	Company	0.32%	27,613	$27,456,000	—	31 Dec 2020	13F
Neuberger Berman Group LLC	13F	Company	0.31%	26,966	$26,812,000	—	31 Dec 2020	13F
RHUMBLINE ADVISERS	13F	Company	0.3%	25,935	$25,787,000	—	31 Dec 2020	13F
AMERIPRISE FINANCIAL INC	13F	Company	0.28%	24,081	$23,944,000	—	31 Dec 2020	13F
Legal & General Group Plc	13F	Company	0.28%	23,935	$23,798,000	—	31 Dec 2020	13F
TWO SIGMA ADVISERS, LP	13F	Company	0.27%	23,000	$22,869,000	—	31 Dec 2020	13F
Swiss National Bank	13F	Company	0.25%	21,300	$21,178,000	—	31 Dec 2020	13F
D. E. Shaw & Co., Inc.	13F	Company	0.24%	20,405	$20,289,000	—	31 Dec 2020	13F
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM	13F	Company	0.23%	20,034	$19,920,000	—	31 Dec 2020	13F
SCHRODER INVESTMENT MANAGEMENT GROUP	13F	Company	0.21%	18,119	$18,015,000	—	31 Dec 2020	13F
FIRST TRUST ADVISORS LP	13F	Company	0.2%	17,523	$17,423,000	—	31 Dec 2020	13F
Connor, Clark & Lunn Investment Management Ltd.	13F	Company	0.2%	17,480	$17,380,000	—	31 Dec 2020	13F
AMERICAN INTERNATIONAL GROUP, INC.	13F	Company	0.19%	16,597	$16,502,000	—	31 Dec 2020	13F

Institutional Holders of BOSTON BEER CO INC - Class A Common Stock $0.01 par value (SAM) as of Q1 2021

As of 31 Mar 2021, BOSTON BEER CO INC - Class A Common Stock $0.01 par value (SAM) was held by 411 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 8,790,285 shares. The largest 10 holders included PRICE T ROWE ASSOCIATES INC /MD/, BlackRock Inc., VANGUARD GROUP INC, Durable Capital Partners LP, WELLINGTON MANAGEMENT GROUP LLP, FMR LLC, JPMORGAN CHASE & CO, RENAISSANCE TECHNOLOGIES LLC, Invesco Ltd., and STATE STREET CORP. This page lists 411 institutional shareholders reporting positions in this security for the Q1 2021 filing period.

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

Compare Q1 2021 vs Q4 2020 Across Filers

Q4 2020 holders

399

Q1 2021 holders

411

Holder diff

Investor	Q4 2020 Shares	Q1 2021 Shares	Share Diff	Share Chg %	Q4 2020 Value $	Q1 2021 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.