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Disclosery

SAM BOSTON BEER INC

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Stock (common), issuer CIK 949870

321 managers (331 13F filers) reported a position in SAM shares at 2026-06-30, 8,640,666 shares in all. 43 filers opened a position and 80 filers sold out during the quarter.

Managers
321
13F filers
331
New
43
Added
111
Reduced
114
Sold out
80
Shares held by filers
8,640,666

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, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, 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 7 filers holding1,019,129$180M-16,952Timeline
BlackRock, Inc.in group BlackRock, Inc.1,015,254$180M<0.01%+245,00413F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC539,988$95.6M0.03%-111,99613F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding450,340$79.7M+215,832Timeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC385,326$68.2M0.03%+97,24213F-HRTimelineGroup
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …321,080$56.8M0.03%+75,83113F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP320,885$56.8M0.01%+47,27313F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP314,732$55.8M<0.01%+59,53713F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC283,512$50.2M0.03%+186,89713F-HRTimelineGroup
Global Alpha Capital Management Ltd.267,567$47.4M2.84%+120,04213F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC205,368$36.4M<0.01%+63,25513F-HRTimelineGroup
T. Rowe Price Investment Management, In…199,420$35.3M0.02%+120,87213F-HRTimeline
SOUTHEASTERN ASSET MANAGEMENT INC/TN/146,043$25.9M1.35%+27,64213F-HRTimeline
SOUTHERNSUN ASSET MANAGEMENT, LLC131,877$23.3M3.14%+57,06113F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC130,819$23.2M<0.01%-14,14113F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co126,182$22.3M<0.01%+19,20113F-HRTimelineGroup
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC117,548$20.9M0.01%new13F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY104,302$18.5M<0.01%-30,20913F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC103,039$18.2M<0.01%+11,51013F-HRTimelineGroup
Quantinno Capital Management LP102,562$18.2M0.02%-128,02513F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC102,179$18.1M0.02%+8,40013F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.99,454$17.6M0.01%+52,84713F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP98,799$17.5M<0.01%+19,80713F-HRTimelineGroup
Trexquant Investment LP73,254$13M0.08%+43,46613F-HRTimeline
GAMCO Investors (Gabelli)group of 2 filers holding70,752$12.5M+16,292Timeline
Calamos Advisors LLCgroup of 2 filers holding65,364$11.6M-2,770Timeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp63,464$11.2M<0.01%+6,46913F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/63,070$11.2M<0.01%+18,71813F-HRTimelineGroup
WORLDQUANT MILLENNIUM ADVISORS LLC62,666$11.1M0.04%new13F-HRTimeline
Qube Research & Technologies Ltd62,634$11.1M0.01%-48,69013F-HRTimeline
FMR LLCin group FMR LLC60,625$10.7M<0.01%-134,74013F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.58,648$10.4M<0.01%-56,96413F-HRTimelineGroup
LOOMIS SAYLES & CO L Pin group LOOMIS SAYLES & CO L P58,288$10.3M0.01%-5,19313F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC48,829$8.64M<0.01%-4,38513F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP45,318$8.02M<0.01%-6,35713F-HRTimelineGroup
Prescott General Partners LLC45,000$7.97M0.41%013F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP42,474$7.52M0.01%-3,17113F-HRTimelineGroup
Pacer Advisors, Inc.38,203$6.76M0.02%+67413F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO35,905$6.61M<0.01%+2,05213F-HRTimelineGroup
HRT FINANCIAL LP35,397$6.27M0.01%+16,32313F-HRTimeline
CAPITAL FUND MANAGEMENT S.A.33,447$5.92M0.04%new13F-HRTimeline
WINTON GROUP Ltdin group WINTON GROUP Ltd33,018$5.85M0.19%+35913F-HRTimelineGroup
Edgestream Partners, L.P.32,914$5.83M0.17%new13F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources32,567$5.77M<0.01%-23,08013F-HRTimelineGroup
Darwins River Capital, LP30,820$5.46M2.99%new13F-HRTimeline
TUDOR INVESTMENT CORP ET AL30,517$5.4M0.02%new13F-HRTimeline
ING GROEP NV29,300$5.19M0.03%new13F-HRTimeline
RHUMBLINE ADVISERS27,251$4.82M<0.01%+3,99413F-HRTimeline
DARK FOREST CAPITAL MANAGEMENT LP26,691$4.73M0.3%new13F-HRTimeline
Nuveen, LLCin group TIAA23,416$4.15M<0.01%+4,81613F-HRTimelineGroup
ALGERT GLOBAL LLC21,786$3.86M0.05%-2,79013F-HRTimeline
ALLIANCEBERNSTEIN L.P.14,841$3.42M<0.01%+6,62313F-HRTimeline
Bridgewater Associates, LP18,630$3.3M0.01%+16,77913F-HRTimeline
ExodusPoint Capital Management, LP17,853$3.16M0.03%new13F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…17,575$3.11M<0.01%-8,52813F-HRTimelineGroup
PRINCIPAL FINANCIAL GROUP INCin group PRINCIPAL FINANCIAL GROUP INC17,353$3.07M<0.01%+16213F-HRTimelineGroup
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC17,254$3.05M<0.01%-7,30413F-HRTimelineGroup
NOMURA HOLDINGS INCin group NOMURA ASSET MANAGEMENT CO LTD16,534$2.93M0.01%-10,65913F-HRTimelineGroup
Odyssean, LLC16,344$2.89M0.47%+9,86713F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA15,846$2.8M<0.01%-3,23513F-HRTimelineGroup
Swiss National Bank15,100$2.67M<0.01%-1,00013F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC14,469$2.56M<0.01%-3,50513F-HRTimelineGroup
CenterBook Partners LP13,820$2.45M0.12%+3,98813F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd13,712$2.43M0.03%+8,22013F-HRTimelineGroup
Schonfeld Strategic Advisors LLC13,652$2.42M0.01%+9,81513F-HRTimeline
CAXTON ASSOCIATES LLP12,900$2.28M0.04%new13F-HRTimeline
Creative Planningin group Creative Planning12,350$2.19M<0.01%-14,10713F-HRTimelineGroup
WEDGE CAPITAL MANAGEMENT L L P/NC12,238$2.17M0.04%+4,21013F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc12,018$2.13M<0.01%+64513F-HRTimelineGroup
Oak Thistle LLC11,934$2.11M0.2%+1,25113F-HRTimeline
Savoir Faire Capital Management, L.P.11,897$2.11M1.31%-3,24013F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN11,796$2.09M<0.01%+6,49613F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/11,156$1.98M<0.01%+3,05513F-HRTimeline
IEQ CAPITAL, LLC10,691$1.89M0.01%-26,23713F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC10,324$1.83M<0.01%-1,06913F-HRTimelineGroup
BCGM Wealth Management, LLC10,247$1.81M0.38%+30313F-HRTimeline
Engineers Gate Manager LP9,610$1.7M0.02%+7,55313F-HRTimeline
Quadrature Capital Ltdin group Quadrature Capital Ltd9,452$1.67M0.01%new13F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP8,947$1.58M<0.01%+1,44713F-HRTimelineGroup
Numerai GP LLC8,867$1.57M0.13%+7,63713F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\8,750$1.55M<0.01%+7,44013F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…8,515$1.51M<0.01%-1,45813F-HR/ATimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC8,105$1.43M<0.01%+88513F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC8,097$1.43M<0.01%+4,81013F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD8,075$1.43M<0.01%+2,68613F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…7,989$1.41M0.01%+4,20313F-HRTimelineGroup
Retirement Systems of Alabama7,732$1.37M<0.01%-1,69813F-HRTimeline
Federation des caisses Desjardins du Qu…7,552$1.34M<0.01%+3,07713F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS7,438$1.32M<0.01%+6,29313F-HRTimelineGroup
NEW YORK STATE TEACHERS RETIREMENT SYST…7,424$1.31M<0.01%-1,82113F-HRTimeline
GAGNON SECURITIES LLCin group GAGNON SECURITIES LLC7,283$1.29M0.25%+4413F-HRTimelineGroup
Jain Global LLC7,086$1.25M0.01%+6,21213F-HRTimeline
OPPENHEIMER ASSET MANAGEMENT INC.in group OPPENHEIMER ASSET MANAGEMENT …6,821$1.21M0.01%+3,74213F-HRTimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …6,784$1.2M<0.01%+1,37313F-HRTimelineGroup
OSSIAM6,720$1.19M0.02%new13F-HRTimeline
Atom Investors LP6,470$1.15M0.1%new13F-HRTimeline
PICTON MAHONEY ASSET MANAGEMENT6,449$1.14M0.01%new13F-HRTimeline
TORONTO DOMINION BANKin group TORONTO DOMINION BANK5,976$1.06M<0.01%new13F-HRTimelineGroup
denkapparat Operations GmbH5,616$994K0.32%013F-HRTimeline
HARBOR CAPITAL ADVISORS, INC.5,531$979K0.07%+1,47513F-HRTimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…5,519$976K<0.01%-3,80613F-HRTimeline
Cerity Partners LLCin group Cerity Partners LLC5,192$919K<0.01%-10,90113F-HRTimelineGroup
VIRGINIA RETIREMENT SYSTEMS ET Al5,088$901K0.01%+1,70013F-HRTimeline
Freestone Grove Partners LP5,061$896K0.01%+2,68813F-HRTimeline
Focus Partners Wealthgroup of 2 filers holding4,939$875K-7,679Timeline
Robeco Institutional Asset Management B…in group Robeco Institutional Asset Ma…4,711$834K<0.01%-24213F-HRTimelineGroup
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co4,683$827K<0.01%+10013F-HRTimelineGroup
Eschler Asset Management LLPin group Eschler Asset Management LLP4,600$814K1.46%013F-HRTimelineGroup
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…4,600$814K<0.01%+1,13413F-HRTimelineGroup
MERCER GLOBAL ADVISORS INC /ADV4,506$798K<0.01%-3,20913F-HR/ATimeline
Jefferies Financial Group Inc.in group Jefferies Financial Group Inc.4,500$797K0.01%-6,60013F-HRTimelineGroup
LPL Financial LLC4,212$746K<0.01%-66213F-HRTimeline
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC4,190$742K<0.01%+84013F-HRTimelineGroup
O'SHAUGHNESSY ASSET MANAGEMENT, LLC4,104$727K<0.01%+2,93513F-HRTimeline
CANADA PENSION PLAN INVESTMENT BOARD4,000$708K<0.01%-10013F-HRTimeline
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding3,935$697K+3,569Timeline
STRS OHIO3,900$690K<0.01%+3,71513F-HRTimeline
Vident Advisory, LLCin group Vident Advisory, LLC3,838$679K0.01%+90913F-HRTimelineGroup
Jupiter Topco LLCin group Janus Henderson3,826$676K<0.01%13F-HRTimelineGroup
EXCHANGE TRADED CONCEPTS, LLC3,809$674K<0.01%-1313F-HR/ATimeline
AMICA MUTUAL INSURANCE CO3,800$673K0.06%+59213F-HRTimeline
Corient Private Wealth LPin group Corient Private Wealth LP3,549$628K<0.01%-41,87813F-HR/ATimelineGroup
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…3,379$598K0.01%+2,14213F-HRTimelineGroup
BOOTHBAY FUND MANAGEMENT, LLC3,310$586K0.01%+1,49713F-HRTimeline
Gotham Asset Management, LLC3,196$566K<0.01%-167,12213F-HRTimeline
AMALGAMATED BANK3,184$564K<0.01%-27813F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND3,025$536K<0.01%-1,28013F-HRTimeline
ICON ADVISERS INC/CO3,020$535K0.1%+50013F-HRTimeline
FOUNDERS CAPITAL MANAGEMENT, LLC2,995$530K0.08%013F-HRTimeline
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLCin group MUTUAL OF AMERICA CAPITAL MAN…2,702$478K<0.01%-24613F-HRTimelineGroup
Inscription Capital, LLC2,681$475K0.04%-1,28413F-HRTimeline
LANARK FINANCIAL, INC.2,602$461K0.03%+1,83213F-HRTimeline
Mariner, LLCin group Mariner, LLC2,569$455K<0.01%-8,87513F-HRTimelineGroup
Entropy Technologies, LP2,548$451K0.02%new13F-HRTimeline
TEACHERS RETIREMENT SYSTEM OF THE STATE…2,535$449K<0.01%013F-HRTimeline
Wernau Asset Management Inc.2,500$443K0.42%013F-HRTimeline
Quantbot Technologies LP2,487$440K0.02%+5513F-HRTimeline
INCEPTIONR LLC2,486$440K0.11%new13F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC2,470$437K<0.01%-15513F-HRTimeline
AlphaGrep UK Ltd2,463$436K0.13%+1,56713F-HRTimeline
Virtu Financial LLCin group Virtu Financial LLC2,398$424K0.01%new13F-HRTimelineGroup
Callan Family Office, LLCin group Callan Family Office, LLC2,353$417K0.01%+52413F-HRTimelineGroup
Caprock Group, LLC2,330$412K0.01%+6613F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…2,328$412K<0.01%-3,58113F-HRTimeline
SG Americas Securities, LLC2,264$401K<0.01%-91413F-HRTimeline
Police & Firemen's Retirement System of…2,201$390K<0.01%-1,23713F-HRTimeline
Louisiana State Employees Retirement Sy…2,200$389K0.01%013F-HR/ATimeline
Connor, Clark & Lunn Investment Managem…2,171$384K<0.01%-3,93513F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO2,108$373K<0.01%+29013F-HRTimelineGroup
Skylands Capital, LLC2,100$372K0.05%new13F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…2,091$370K0.01%+6013F-HRTimelineGroup
Diversified Investment Strategies, LLC2,085$369K0.24%013F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…2,081$368K0.01%+67113F-HRTimelineGroup
ARIZONA STATE RETIREMENT SYSTEM2,079$368K<0.01%-16613F-HRTimeline
TWO SIGMA SECURITIES, LLC2,063$365K0.03%new13F-HRTimeline
NORTHWESTERN MUTUAL INVESTMENT MANAGEME…group of 2 filers holding2,056$364K-3Timeline
FLPUTNAM INVESTMENT MANAGEMENT CO2,024$358K<0.01%013F-HRTimeline
GLENMEDE TRUST CO NAin group GLENMEDE TRUST CO NA1,980$351K<0.01%-1,47613F-HRTimelineGroup
RHS Financial, LLC1,947$345K0.14%-1413F-HRTimeline
Summit Trail Advisors, LLC1,936$343K<0.01%-4,48213F-HRTimeline
NEW MEXICO EDUCATIONAL RETIREMENT BOARD1,900$336K0.01%013F-HRTimeline
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…1,790$317K<0.01%-13713F-HRTimeline
STATE OF MICHIGAN RETIREMENT SYSTEM1,783$316K<0.01%-10013F-HRTimeline
Simplicity Wealth,LLC1,704$302K0.01%new13F-HRTimeline
Empowered Funds, LLC1,662$294K<0.01%+4813F-HRTimeline
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…1,660$294K<0.01%-7313F-HRTimelineGroup
Counterpoint Mutual Funds LLC1,652$292K0.03%new13F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…1,635$289K<0.01%013F-HRTimeline
CAPTRUST FINANCIAL ADVISORS1,615$286K<0.01%-1,65913F-HRTimeline
OP Asset Management Ltd1,607$284K<0.01%new13F-HRTimeline
SAGE PRIVATE WEALTH GROUP, LLC1,589$281K0.13%+35213F-HRTimeline
TEACHER RETIREMENT SYSTEM OF TEXAS1,582$280K<0.01%-2,46113F-HRTimeline
TRUST CO OF VERMONT1,580$280K0.01%13F-HRTimeline
OREGON PUBLIC EMPLOYEES RETIREMENT FUND1,577$279K<0.01%+4313F-HRTimeline
Bayforest Capital Ltd1,505$266K0.25%new13F-HRTimeline
Farther Finance Advisors, LLC1,496$265K<0.01%+19413F-HRTimeline
ROBERTS GLORE & CO INC /IL/1,491$264K0.07%+44913F-HRTimeline
Cambria Investment Management, L.P.1,489$264K0.01%-1,53613F-HRTimeline
Cetera Investment Advisers1,482$262K<0.01%-19313F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.1,448$256K<0.01%+62813F-HRTimelineGroup
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC1,438$255K<0.01%-38713F-HRTimelineGroup
Walleye Capital LLCin group Walleye Capital LLC1,433$254K<0.01%new13F-HRTimelineGroup
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…1,430$253K<0.01%-3013F-HRTimelineGroup
HOWE & RUSLING INC1,422$252K0.01%new13F-HRTimeline
GREAT VALLEY ADVISOR GROUP, INC.1,417$251K<0.01%+10013F-HRTimeline
LANDSCAPE CAPITAL MANAGEMENT, L.L.C.in group LANDSCAPE CAPITAL MANAGEMENT,…1,413$250K0.02%new13F-HRTimelineGroup
Mitsubishi UFJ Trust & Banking Corpgroup of 2 filers holding1,411$250K+1,396Timeline
YOUSIF CAPITAL MANAGEMENT, LLC1,384$245K<0.01%-13013F-HRTimeline
Balyasny Asset Management L.P.in group Balyasny Asset Management1,362$241K<0.01%-33613F-HRTimelineGroup
DRW Securities, LLC1,342$238K0.01%+46913F-HRTimeline
GREENWOOD CAPITAL ASSOCIATES LLC1,321$234K0.02%-413F-HRTimeline
ProShare Advisors LLC1,313$232K<0.01%new13F-HRTimeline
Kera Capital Partners, Inc.1,310$232K0.02%-29013F-HRTimeline
HighTower Advisors, LLC1,281$227K<0.01%-90013F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC1,249$221K<0.01%new13F-HRTimelineGroup
Cresset Asset Management, LLC1,245$220K<0.01%-7813F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC1,229$218K<0.01%+1013F-HRTimeline
1620 INVESTMENT ADVISORS, INC.1,217$215K0.13%-25213F-HRTimeline
CastleKnight Management LP1,200$212K0.01%-4,10013F-HRTimeline
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/1,194$211K<0.01%new13F-HRTimelineGroup