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Disclosery

SAM BOSTON BEER INC

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Stock (common), issuer CIK 949870

349 managers (357 13F filers) reported a position in SAM shares at 2025-09-30, 7,885,837 shares in all. 66 filers opened a position and 58 filers sold out during the quarter.

Managers
349
13F filers
357
New
66
Added
113
Reduced
115
Sold out
58
Shares held by filers
7,885,837

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q3 2025

Filers in the available 13F reports with a share position at 2025-09-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
VANGUARD GROUP INCgroup of 2 filers holding952,403$201M+43,791Timeline
BlackRock, Inc.in group BlackRock, Inc.782,344$165M<0.01%-131,15713F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC647,060$137M0.09%+500,12013F-HRTimelineGroup
FMR LLCin group FMR LLC389,820$82.4M<0.01%-67,74313F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP265,779$56.2M0.01%+3,33613F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP263,263$55.7M<0.01%-15,41013F-HRTimelineGroup
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …258,403$54.6M0.03%+19,29413F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding241,628$51.1M+19,079Timeline
MORGAN STANLEYin group MORGAN STANLEY233,767$49.4M<0.01%+140,48013F-HR/ATimelineGroup
Fisher Asset Management, LLC231,467$48.9M0.02%-61513F-HRTimeline
Gotham Asset Management, LLC213,266$45.1M0.2%+201,75213F-HRTimeline
COOPER CREEK PARTNERS MANAGEMENT LLC145,939$30.9M1.15%-80,57113F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC143,372$30.3M<0.01%+61613F-HRTimelineGroup
Quantinno Capital Management LP136,114$28.8M0.08%+58,77713F-HRTimeline
Global Alpha Capital Management Ltd.131,204$27.7M1.59%+17,40013F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC123,034$26M0.01%+32,38213F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.114,889$24.3M<0.01%+12,74213F-HRTimelineGroup
SOUTHEASTERN ASSET MANAGEMENT INC/TN/109,238$23.1M1.18%+2,92113F-HRTimeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC106,674$22.5M0.04%+39,55813F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co95,906$20.3M<0.01%+51713F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC91,909$19.4M<0.01%+40,61713F-HRTimelineGroup
SOUTHERNSUN ASSET MANAGEMENT, LLC90,168$19.1M2.47%-1,45913F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC87,079$18.4M0.02%-4,30013F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP75,171$15.9M<0.01%-18613F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.72,355$15.3M0.01%-21,42113F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC71,943$15.2M0.01%-153,15213F-HRTimelineGroup
LOOMIS SAYLES & CO L Pin group LOOMIS SAYLES & CO L P67,189$14.2M0.02%+1,54113F-HRTimelineGroup
Calamos Advisors LLCin group Calamos Advisors LLC65,364$13.8M0.06%+7,03513F-HRTimelineGroup
Qube Research & Technologies Ltd55,703$11.8M0.02%-56,80413F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp54,954$11.6M<0.01%-15,51913F-HRTimelineGroup
GAMCO Investors (Gabelli)group of 2 filers holding52,994$11.2M+16,889Timeline
VOLORIDGE INVESTMENT MANAGEMENT, LLC51,131$10.8M0.04%+33,04513F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC50,327$10.6M<0.01%+1,63813F-HRTimelineGroup
Pacer Advisors, Inc.46,839$9.9M0.03%-3,08413F-HRTimeline
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP46,283$9.79M0.01%+30,62613F-HRTimelineGroup
Crawford Fund Management, LLC42,686$9.02M4.88%-7,80013F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/40,839$8.63M<0.01%-12,78113F-HR/ATimelineGroup
Trexquant Investment LP40,167$8.49M0.09%-28,91613F-HRTimeline
IEQ CAPITAL, LLC39,354$8.32M0.03%+36,18113F-HRTimeline
Savoir Faire Capital Management, L.P.38,825$8.21M2.94%+8,58513F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources37,322$7.89M<0.01%+13,18913F-HRTimelineGroup
Engineers Gate Manager LP36,864$7.79M0.09%-3,17813F-HRTimeline
Man Group plcin group Man Group plc30,290$6.4M0.01%-7,94913F-HRTimelineGroup
ALGERT GLOBAL LLC28,205$5.96M0.1%+13,93513F-HR/ATimeline
WINTON GROUP Ltdin group WINTON GROUP Ltd28,085$5.94M0.22%+25,84213F-HRTimelineGroup
ONTARIO TEACHERS PENSION PLAN BOARDin group ONTARIO TEACHERS PENSION PLAN…26,141$5.53M0.13%-3,92313F-HR/ATimelineGroup
PANAGORA ASSET MANAGEMENT INC24,806$5.24M0.02%new13F-HRTimeline
RHUMBLINE ADVISERS24,059$5.09M<0.01%+62913F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO22,398$4.74M<0.01%+14713F-HR/ATimelineGroup
GAGNON SECURITIES LLCin group GAGNON SECURITIES LLC21,508$4.55M0.91%-3,54313F-HRTimelineGroup
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC20,680$4.37M0.01%-42,07013F-HRTimelineGroup
RK Asset Management, LLC19,015$4.02M3.65%+29513F-HRTimeline
CWM, LLCin group CWM, LLC18,217$3.85M0.01%+17,05513F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.18,157$3.84M<0.01%+8,76713F-HRTimeline
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding18,094$3.83M+14,394Timeline
PRINCIPAL FINANCIAL GROUP INCgroup of 2 filers holding17,950$3.79M-1,107Timeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP17,635$3.73M<0.01%-15,17613F-HRTimelineGroup
Nuveen, LLCin group TIAA17,440$3.69M<0.01%-23613F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC17,097$3.61M<0.01%-35,11813F-HR/ATimelineGroup
Swiss National Bank16,700$3.53M<0.01%+10013F-HRTimeline
Cerity Partners LLCin group Cerity Partners LLC16,630$3.52M0.01%new13F-HRTimelineGroup
Connor, Clark & Lunn Investment Managem…16,011$3.39M0.01%+93313F-HRTimeline
DARK FOREST CAPITAL MANAGEMENT LP15,493$3.28M0.12%-11,19913F-HR/ATimeline
Creative Planningin group Creative Planning14,834$3.14M<0.01%+11,80913F-HRTimelineGroup
Redwood Investment Management, LLCin group Redwood Investment Management…14,662$3.1M0.34%-2,73813F-HR/ATimelineGroup
Atom Investors LP14,188$3M0.23%+4,11613F-HRTimeline
MAVERICK CAPITAL LTD14,039$2.97M0.04%new13F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc13,506$2.86M<0.01%-1,12213F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…12,139$2.61M<0.01%+3,32913F-HRTimelineGroup
NEW YORK STATE TEACHERS RETIREMENT SYST…12,316$2.6M0.01%+57713F-HRTimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…11,036$2.44M<0.01%+9,01413F-HRTimeline
Bridgewater Associates, LP10,825$2.29M0.01%new13F-HRTimeline
Cardinal Capital Management10,746$2.27M0.31%+1,21613F-HRTimeline
Arax Advisory Partners9,892$2.09M0.03%+9,75813F-HRTimeline
WEDGE CAPITAL MANAGEMENT L L P/NC9,628$2.04M0.03%+99013F-HRTimeline
Retirement Systems of Alabama9,561$2.02M0.01%-50113F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA9,545$2.02M<0.01%-24113F-HRTimelineGroup
BCGM Wealth Management, LLC9,491$2.01M0.52%+5,93613F-HRTimeline
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …9,217$1.95M<0.01%-16513F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…7,911$1.67M<0.01%-50313F-HRTimeline
CLOUGH CAPITAL PARTNERS L Pin group CLOUGH CAPITAL PARTNERS L P7,440$1.57M0.14%new13F-HRTimelineGroup
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co7,033$1.51M<0.01%013F-HRTimelineGroup
CenterBook Partners LP7,050$1.49M0.07%-2,79613F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/7,035$1.49M<0.01%+37413F-HRTimeline
Summit Trail Advisors, LLC7,032$1.49M0.02%+4,21213F-HRTimeline
Oak Thistle LLC6,793$1.44M0.22%+5,73213F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…6,760$1.43M<0.01%-41513F-HRTimeline
TEACHER RETIREMENT SYSTEM OF TEXAS6,634$1.4M0.01%-6313F-HRTimeline
LPL Financial LLC6,440$1.36M<0.01%+1,81713F-HRTimeline
MERCER GLOBAL ADVISORS INC /ADV6,384$1.35M<0.01%+5,15013F-HRTimeline
Asset Management Group, Inc.6,331$1.34M0.22%013F-HRTimeline
Focus Partners Wealthgroup of 2 filers holding6,916$1.31M+5,792Timeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN6,122$1.29M<0.01%-64713F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC6,088$1.29M<0.01%+3,82413F-HRTimelineGroup
Caprock Group, LLC5,769$1.28M0.03%13F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC6,028$1.27M<0.01%new13F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …5,866$1.24M<0.01%-42713F-HRTimelineGroup
Mariner, LLCin group Mariner, LLC5,828$1.23M<0.01%new13F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD5,819$1.23M<0.01%-1,99513F-HRTimeline
SG Americas Securities, LLC5,667$1.2M<0.01%+5,06113F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND5,190$1.1M<0.01%-11513F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC5,026$1.06M<0.01%-1,43213F-HRTimelineGroup
Freestone Grove Partners LP4,961$1.05M0.01%new13F-HRTimeline
WOLVERINE TRADING, LLC4,848$1.04M0.02%-2,11613F-HRTimeline
Federation des caisses Desjardins du Qu…4,911$1.04M<0.01%+60013F-HRTimeline
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC4,350$920K<0.01%-2,90213F-HRTimelineGroup
COMERICA BANK4,132$874K<0.01%+73513F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…4,065$859K<0.01%-36713F-HRTimelineGroup
Inscription Capital, LLC3,954$836K0.09%+2,60213F-HRTimeline
CAPTRUST FINANCIAL ADVISORS3,871$818K<0.01%new13F-HRTimeline
HighTower Advisors, LLC3,867$818K<0.01%new13F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson3,826$810K<0.01%013F-HRTimelineGroup
Schonfeld Strategic Advisors LLC3,708$784K0.01%-9,66013F-HRTimeline
OPPENHEIMER ASSET MANAGEMENT INC.in group OPPENHEIMER ASSET MANAGEMENT …3,696$781K0.01%-1313F-HRTimelineGroup
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLCin group MUTUAL OF AMERICA CAPITAL MAN…3,653$772K0.01%-44113F-HRTimelineGroup
AMALGAMATED BANK3,612$764K0.01%-15913F-HRTimeline
Bayforest Capital Ltd3,577$756K0.36%+1,47913F-HRTimeline
Treasurer of the State of North Carolina3,564$754K<0.01%-25013F-HRTimeline
EXCHANGE TRADED CONCEPTS, LLC3,557$752K0.01%-5413F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…3,533$747K0.02%-75213F-HRTimelineGroup
Jump Financial, LLCin group Jump Financial, LLC3,528$746K0.01%-41,12813F-HR/ATimelineGroup
Police & Firemen's Retirement System of…3,438$727K0.01%+24613F-HRTimeline
VIRGINIA RETIREMENT SYSTEMS ET Al3,388$716K<0.01%+1,20013F-HRTimeline
CITIGROUP INCin group CITIGROUP INC3,359$710K<0.01%-13,17513F-HRTimelineGroup
TEACHERS RETIREMENT SYSTEM OF THE STATE…3,285$694K0.01%013F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…3,244$686K<0.01%-18,46113F-HRTimelineGroup
AMICA MUTUAL INSURANCE CO3,208$678K0.06%013F-HRTimeline
denkapparat Operations GmbH3,200$677K0.43%+1,89213F-HRTimeline
Cambridge Investment Research Advisors,…3,185$673K<0.01%new13F-HRTimeline
COMMONWEALTH EQUITY SERVICES, LLC3,156$667K<0.01%+1,98213F-HRTimeline
FOUNDERS CAPITAL MANAGEMENT, LLC2,995$633K0.1%013F-HRTimeline
Pallas Capital Advisors LLC2,946$623K0.02%new13F-HRTimeline
Vident Advisory, LLCin group Vident Advisory, LLC2,923$618K0.01%new13F-HRTimelineGroup
Merit Financial Group, LLC2,757$583K0.01%new13F-HR/ATimeline
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…2,672$565K<0.01%-4013F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM2,551$539K<0.01%+1713F-HRTimeline
ICON ADVISERS INC/CO2,520$533K0.12%013F-HR/ATimeline
Eschler Asset Management LLPin group Eschler Asset Management LLP2,500$529K0.39%new13F-HRTimelineGroup
Wernau Asset Management Inc.2,500$529K0.55%013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS2,477$524K<0.01%+1,59313F-HRTimelineGroup
Sequoia Financial Advisors, LLC2,313$489K<0.01%new13F-HRTimeline
BRIGHTON JONES LLC2,307$488K0.01%new13F-HRTimeline
Diversified Investment Strategies, LLC2,235$473K0.31%+36513F-HRTimeline
Chicago Partners Investment Group LLC2,114$471K0.01%new13F-HRTimeline
Louisiana State Employees Retirement Sy…2,200$465K0.01%-10013F-HRTimeline
NORTHWESTERN MUTUAL INVESTMENT MANAGEME…group of 2 filers holding2,162$457K-90Timeline
Vise Technologies, Inc.2,149$454K0.02%+1,05713F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.2,079$451K<0.01%+1,35213F-HRTimelineGroup
NorthCrest Asset Manangement, LLC2,034$450K0.01%new13F-HRTimeline
AlphaQuest LLC2,113$447K0.03%-4,40513F-HRTimeline
Corient Private Wealth LPin group Corient Private Wealth LP2,089$442K<0.01%-5313F-HRTimelineGroup
SYON CAPITAL LLC2,063$436K0.02%+88813F-HRTimeline
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC2,055$434K<0.01%-91413F-HRTimelineGroup
Ilex Capital Partners (UK) LLP2,045$432K0.01%new13F-HRTimeline
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…2,030$429K<0.01%-8513F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC1,944$411K<0.01%+79913F-HRTimelineGroup
Bayesian Capital Management, LP1,942$411K0.08%new13F-HRTimeline
NEW MEXICO EDUCATIONAL RETIREMENT BOARD1,900$402K0.01%013F-HRTimeline
STATE OF MICHIGAN RETIREMENT SYSTEM1,883$398K<0.01%-10013F-HRTimeline
ROBERTS GLORE & CO INC /IL/1,880$397K0.11%+21813F-HRTimeline
GC Wealth Management RIA, LLC1,864$394K0.01%new13F-HRTimeline
Kera Capital Partners, Inc.1,829$387K0.06%new13F-HRTimeline
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…1,817$384K<0.01%-12113F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO1,812$383K<0.01%-11513F-HRTimelineGroup
Aigen Investment Management, LP1,756$371K0.06%+16413F-HRTimeline
LANARK FINANCIAL, INC.1,718$363K0.03%+1113F-HRTimeline
Cetera Investment Advisers1,694$358K<0.01%+4113F-HRTimeline
Exit Wealth Advisors, LLC.1,672$353K0.24%13F-HRTimeline
YOUSIF CAPITAL MANAGEMENT, LLC1,670$353K<0.01%-26013F-HRTimeline
OP Asset Management Ltd1,665$352K<0.01%new13F-HR/ATimeline
RHS Financial, LLC1,656$350K0.18%new13F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…1,635$346K<0.01%013F-HRTimeline
Arkadios Wealth Advisors1,634$345K0.01%new13F-HRTimeline
TRUST CO OF VERMONT1,580$334K0.01%013F-HRTimeline
OREGON PUBLIC EMPLOYEES RETIREMENT FUND1,579$334K<0.01%-7213F-HRTimeline
SAGE PRIVATE WEALTH GROUP, LLC1,563$330K0.18%+2813F-HRTimeline
Numerai GP LLC1,508$319K0.04%-1,66413F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP1,478$318K<0.01%+1,12613F-HRTimelineGroup
NJ State Employees Deferred Compensatio…1,500$317K0.03%013F-HRTimeline
Versor Investments LP1,500$317K0.06%-4,20013F-HRTimeline
Polymer Capital Management (US) LLC1,496$316K0.04%-1,44713F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…1,482$313K0.01%-11613F-HRTimelineGroup
Cambria Investment Management, L.P.1,425$301K0.02%-7713F-HR/ATimeline
Profit Investment Management, LLC1,378$291K0.37%013F-HRTimeline
Cresset Asset Management, LLC1,378$291K<0.01%+11113F-HR/ATimeline
Investors Research Corp1,325$280K0.05%013F-HRTimeline
Balyasny Asset Management L.P.in group Balyasny Asset Management1,305$276K<0.01%-83013F-HRTimelineGroup
CERTUITY, LLC1,305$276K0.02%new13F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC1,285$272K0.01%new13F-HRTimeline
Farther Finance Advisors, LLC1,266$268K<0.01%+1,00513F-HRTimeline
Versant Capital Management, Inc1,260$266K0.04%+55213F-HRTimeline
Patriot Financial Group Insurance Agenc…1,255$265K0.03%new13F-HRTimeline
Claret Asset Management Corp1,244$263K0.03%-1713F-HRTimeline
PRELUDE CAPITAL MANAGEMENT, LLC1,238$262K0.02%-10213F-HRTimeline
GREAT VALLEY ADVISOR GROUP, INC.in group GREAT VALLEY ADVISOR GROUP, I…1,217$258K0.01%+2513F-HRTimelineGroup
Baker Avenue Asset Management, LP1,217$257K0.01%new13F-HRTimeline
New Age Alpha Advisors, LLC1,203$254K0.01%-2113F-HRTimeline
State of Alaska, Department of Revenue1,208$254K<0.01%+28413F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\1,201$254K<0.01%+8113F-HRTimelineGroup
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…1,200$254K<0.01%013F-HRTimelineGroup