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Disclosery

SAM BOSTON BEER INC

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Stock (common), issuer CIK 949870

358 managers (370 13F filers) reported a position in SAM shares at 2026-03-31, 7,809,612 shares in all. 68 filers opened a position and 46 filers sold out during the quarter.

Managers
358
13F filers
370
New
68
Added
130
Reduced
91
Sold out
46
Shares held by filers
7,809,612

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, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, 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 holding1,036,081$239M+1,034,641Timeline
BlackRock, Inc.in group BlackRock, Inc.770,250$177M<0.01%+44,72113F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC651,984$150M0.07%+211,76013F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC288,084$66.4M0.03%+96,47913F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP273,612$63M0.01%+15,61113F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP255,195$58.8M<0.01%+89813F-HRTimelineGroup
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …245,249$56.5M0.03%-26,26713F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding234,508$54M+2,170Timeline
Quantinno Capital Management LP230,587$53.1M0.09%+140,24713F-HRTimeline
FMR LLCin group FMR LLC195,365$45M<0.01%-165,51013F-HRTimelineGroup
Gotham Asset Management, LLC170,318$39.2M0.12%-78,59213F-HRTimeline
Global Alpha Capital Management Ltd.147,525$34M2.04%+24,49713F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC144,960$33.4M<0.01%+89,24513F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC142,113$32.8M<0.01%+2,91513F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY134,511$31M<0.01%+20,21113F-HRTimelineGroup
SOUTHEASTERN ASSET MANAGEMENT INC/TN/118,401$27.3M1.34%-29,59613F-HRTimeline
Invesco Ltd.in group Invesco Ltd.115,612$26.6M<0.01%-1,50013F-HRTimelineGroup
Qube Research & Technologies Ltd111,324$25.6M0.04%-21,53813F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co106,981$24.6M<0.01%+8,15513F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC96,615$22.3M0.02%+39,73313F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC93,779$21.6M0.03%+11,10013F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC91,529$21.1M<0.01%+62613F-HR/ATimelineGroup
Woodson Capital Management, LP90,000$20.7M3.35%-10,00013F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP78,992$18.2M<0.01%+4,10113F-HRTimelineGroup
T. Rowe Price Investment Management, In…78,548$18.1M0.01%+78,52413F-HRTimeline
Man Group plcin group Man Group plc77,523$17.9M0.04%+6,17813F-HRTimelineGroup
SOUTHERNSUN ASSET MANAGEMENT, LLC74,816$17.2M2.5%-70813F-HRTimeline
Calamos Advisors LLCgroup of 2 filers holding68,134$15.7M+2,770Timeline
LOOMIS SAYLES & CO L Pin group LOOMIS SAYLES & CO L P63,481$14.6M0.02%-1,56813F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp56,995$13.1M<0.01%-3,28813F-HRTimelineGroup
FRANKLIN RESOURCES INCin group Franklin Resources55,647$12.8M<0.01%-9,92613F-HRTimelineGroup
GAMCO Investors (Gabelli)group of 2 filers holding54,460$12.5M-610Timeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC53,214$12.3M0.01%-79,72913F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP51,675$11.9M0.01%+13,34813F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.46,607$10.7M0.01%-7,17813F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP45,645$10.5M0.01%+18,72613F-HRTimelineGroup
Corient Private Wealth LPin group Corient Private Wealth LP45,427$10.4M0.01%+42,49113F-HRTimelineGroup
Prescott General Partners LLC45,000$10.4M0.76%new13F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/44,352$10.2M<0.01%-2,36613F-HRTimelineGroup
Crawford Fund Management, LLC39,381$9.07M2.96%-22,10013F-HRTimeline
Pacer Advisors, Inc.37,529$8.65M0.02%-4,30713F-HR/ATimeline
IEQ CAPITAL, LLC36,928$8.51M0.04%+12,69213F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO33,853$7.78M<0.01%+10,84413F-HR/ATimelineGroup
WINTON GROUP Ltdin group WINTON GROUP Ltd32,659$7.52M0.26%+3,22813F-HRTimelineGroup
Trexquant Investment LP29,788$6.86M0.05%-26,33113F-HRTimeline
NOMURA HOLDINGS INCin group NOMURA ASSET MANAGEMENT CO LTD27,193$6.27M0.05%-19,39913F-HRTimelineGroup
Creative Planningin group Creative Planning26,457$6.1M<0.01%+14,56013F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…26,103$6.01M0.01%+7,57313F-HRTimelineGroup
ALGERT GLOBAL LLC24,576$5.66M0.09%-13013F-HR/ATimeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC24,558$5.65M0.01%-4,46313F-HRTimelineGroup
RHUMBLINE ADVISERS23,257$5.36M<0.01%+17313F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA19,081$4.39M<0.01%+11,01213F-HRTimelineGroup
HRT FINANCIAL LP19,074$4.39M0.01%+12,29913F-HRTimeline
Nuveen, LLCin group TIAA18,600$4.29M<0.01%+1,16013F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC17,974$4.14M0.01%+14,41313F-HRTimelineGroup
PRINCIPAL FINANCIAL GROUP INCin group PRINCIPAL FINANCIAL GROUP INC17,191$3.96M<0.01%+64013F-HRTimelineGroup
ONTARIO TEACHERS PENSION PLAN BOARDin group ONTARIO TEACHERS PENSION PLAN…17,092$3.94M0.11%-13,58113F-HRTimelineGroup
Swiss National Bank16,100$3.71M<0.01%-40013F-HRTimeline
Cerity Partners LLCin group Cerity Partners LLC16,093$3.71M0.01%+7,66713F-HRTimelineGroup
Savoir Faire Capital Management, L.P.15,137$3.49M2.11%-6,62613F-HRTimeline
Focus Partners Wealthgroup of 2 filers holding12,618$2.93M+8,647Timeline
CWM, LLCin group CWM, LLC12,368$2.85M0.01%+3,23913F-HRTimelineGroup
Mariner, LLCin group Mariner, LLC11,444$2.64M<0.01%+8,25813F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC11,393$2.62M<0.01%-4,00513F-HRTimelineGroup
Cardinal Capital Management11,384$2.62M0.34%+1,83313F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc11,373$2.62M<0.01%-1,90513F-HRTimelineGroup
Jefferies Financial Group Inc.in group Jefferies Financial Group Inc.11,100$2.56M0.03%new13F-HRTimelineGroup
Oak Thistle LLC10,683$2.46M0.24%+5,35613F-HRTimeline
Quantedge Capital Pte Ltd10,400$2.4M1.31%new13F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…9,973$2.3M<0.01%+2,09713F-HRTimeline
BCGM Wealth Management, LLC9,944$2.29M0.58%+33913F-HRTimeline
CenterBook Partners LP9,832$2.27M0.12%+4,08313F-HRTimeline
Retirement Systems of Alabama9,430$2.17M0.01%+19813F-HRTimeline
NEW YORK STATE TEACHERS RETIREMENT SYST…9,245$2.13M<0.01%-2,74213F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC8,856$2.04M<0.01%-35,89613F-HRTimelineGroup
WEALTH ENHANCEMENT ADVISORY SERVICES, L…9,325$1.88M<0.01%+2,13513F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/8,101$1.87M<0.01%+58613F-HRTimeline
WEDGE CAPITAL MANAGEMENT L L P/NC8,028$1.85M0.03%-1,59713F-HRTimeline
MERCER GLOBAL ADVISORS INC /ADV7,715$1.78M<0.01%+4,62313F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP7,500$1.73M<0.01%-8,76913F-HRTimelineGroup
GAGNON SECURITIES LLCin group GAGNON SECURITIES LLC7,239$1.67M0.39%+88413F-HRTimelineGroup
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC7,220$1.66M<0.01%+2,51913F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.8,218$1.6M<0.01%-11,80213F-HRTimeline
Odyssean, LLC6,477$1.49M0.54%new13F-HRTimeline
Summit Trail Advisors, LLC6,418$1.48M0.02%+2,36613F-HRTimeline
VOLORIDGE INVESTMENT MANAGEMENT, LLC6,265$1.44M0.01%-56,85813F-HRTimeline
Connor, Clark & Lunn Investment Managem…6,106$1.41M<0.01%-6,02413F-HRTimeline
Horizon Investments, LLC6,014$1.39M0.02%new13F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC5,936$1.37M0.01%013F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…5,909$1.36M<0.01%-2,08113F-HRTimeline
denkapparat Operations GmbH5,616$1.29M0.54%+80613F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd5,492$1.27M0.02%-3,75313F-HRTimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …5,411$1.25M<0.01%-13513F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD5,389$1.24M<0.01%+2,77013F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN5,300$1.22M<0.01%-18413F-HR/ATimelineGroup
CastleKnight Management LP5,300$1.22M0.06%-1,30013F-HRTimeline
Robeco Institutional Asset Management B…in group Robeco Institutional Asset Ma…4,953$1.14M<0.01%+37713F-HRTimelineGroup
LPL Financial LLC4,874$1.12M<0.01%-2,29413F-HRTimeline
Eschler Asset Management LLPin group Eschler Asset Management LLP4,600$1.06M1.06%013F-HRTimelineGroup
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co4,583$1.06M<0.01%013F-HRTimelineGroup
Federation des caisses Desjardins du Qu…4,475$1.03M<0.01%-98413F-HRTimeline
Perbak Capital Partners LLP4,365$1.01M0.25%+3,22913F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND4,305$992K<0.01%+11513F-HRTimeline
Sequoia Financial Advisors, LLC4,120$949K0.01%+1,59913F-HRTimeline
CANADA PENSION PLAN INVESTMENT BOARD4,100$945K<0.01%+70013F-HRTimeline
HARBOR CAPITAL ADVISORS, INC.4,056$935K0.08%new13F-HRTimeline
TEACHER RETIREMENT SYSTEM OF TEXAS4,043$932K<0.01%-1,59713F-HRTimeline
Inscription Capital, LLC3,965$914K0.1%+94313F-HRTimeline
Schonfeld Strategic Advisors LLC3,837$884K0.01%+1,92213F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson3,826$881K<0.01%013F-HR/ATimelineGroup
EXCHANGE TRADED CONCEPTS, LLC3,822$881K0.01%+36713F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…3,786$872K<0.01%+2713F-HRTimelineGroup
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…3,466$799K<0.01%+3,41013F-HRTimelineGroup
AMALGAMATED BANK3,462$798K0.01%-5313F-HRTimeline
GLENMEDE TRUST CO NAin group GLENMEDE TRUST CO NA3,456$796K<0.01%+71213F-HRTimelineGroup
Police & Firemen's Retirement System of…3,438$792K0.01%013F-HRTimeline
VIRGINIA RETIREMENT SYSTEMS ET Al3,388$781K0.01%+40013F-HRTimeline
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC3,350$772K<0.01%+28913F-HRTimelineGroup
Treasurer of the State of North Carolina3,307$762K<0.01%+7013F-HRTimeline
CITIGROUP INCin group CITIGROUP INC3,287$757K<0.01%+1,44113F-HRTimelineGroup
CAPTRUST FINANCIAL ADVISORS3,274$754K<0.01%+1,54113F-HRTimeline
AMICA MUTUAL INSURANCE CO3,208$739K0.06%013F-HRTimeline
SG Americas Securities, LLC3,178$732K<0.01%-1,04013F-HRTimeline
State of Tennessee, Department of Treas…3,094$713K<0.01%013F-HRTimeline
OPPENHEIMER ASSET MANAGEMENT INC.in group OPPENHEIMER ASSET MANAGEMENT …3,079$709K0.01%+1,03313F-HRTimelineGroup
Magnetar Financial LLCin group Magnetar Financial LLC3,055$704K0.01%+1,92013F-HRTimelineGroup
Cambria Investment Management, L.P.3,025$697K0.04%+27113F-HRTimeline
FOUNDERS CAPITAL MANAGEMENT, LLC2,995$690K0.11%013F-HRTimeline
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLCin group MUTUAL OF AMERICA CAPITAL MAN…2,948$679K0.01%-25313F-HRTimelineGroup
Vident Advisory, LLCin group Vident Advisory, LLC2,929$675K0.01%-14713F-HRTimelineGroup
GROUP ONE TRADING LLC2,776$640K0.02%+2,51213F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC2,625$605K0.01%new13F-HRTimeline
TEACHERS RETIREMENT SYSTEM OF THE STATE…2,535$584K<0.01%-75013F-HRTimeline
ICON ADVISERS INC/CO2,520$581K0.13%013F-HRTimeline
Impact Partnership Wealth, LLC2,514$579K0.07%new13F-HRTimeline
Wernau Asset Management Inc.2,500$576K0.6%013F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…2,477$571K<0.01%-6113F-HRTimeline
Quantbot Technologies LP2,432$560K0.02%new13F-HRTimeline
SYON CAPITAL LLC2,391$551K0.03%+1,05813F-HRTimeline
Freestone Grove Partners LP2,373$547K<0.01%new13F-HRTimeline
CIBC Bancorp USA Inc.in group CIBC Bancorp USA Inc.2,350$541K<0.01%13F-HRTimelineGroup
Chicago Partners Investment Group LLC2,197$536K0.01%+1,24013F-HRTimeline
Caprock Group, LLC2,264$522K0.01%-92613F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM2,245$517K<0.01%-9213F-HRTimeline
Louisiana State Employees Retirement Sy…2,200$507K0.01%+10013F-HRTimeline
HighTower Advisors, LLC2,181$503K<0.01%-1,81413F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC2,153$496K<0.01%-1,59113F-HRTimelineGroup
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …2,149$495K<0.01%new13F-HRTimelineGroup
Diversified Investment Strategies, LLC2,085$480K0.31%013F-HRTimeline
NORTHWESTERN MUTUAL INVESTMENT MANAGEME…group of 2 filers holding2,059$474K-90Timeline
Engineers Gate Manager LP2,057$474K0.01%-11,58913F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…2,031$468K0.01%-1,27413F-HRTimelineGroup
FLPUTNAM INVESTMENT MANAGEMENT CO2,024$466K0.01%new13F-HRTimeline
Empirical Financial Services, LLC d.b.a…2,019$465K0.01%new13F-HRTimeline
Monaco Asset Management SAM2,000$461K0.15%-51,92713F-HRTimeline
EVERGREEN CAPITAL MANAGEMENT LLC1,995$460K0.01%new13F-HRTimeline
RHS Financial, LLC1,961$452K0.21%013F-HRTimeline
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…1,927$444K<0.01%+213F-HRTimeline
CERTUITY, LLC1,917$442K0.03%new13F-HRTimeline
NEW MEXICO EDUCATIONAL RETIREMENT BOARD1,900$438K0.01%013F-HRTimeline
STATE OF MICHIGAN RETIREMENT SYSTEM1,883$434K<0.01%+10013F-HRTimeline
Bridgewater Associates, LP1,851$426K<0.01%-3,31213F-HRTimeline
Merit Financial Group, LLC1,834$423K<0.01%+23113F-HRTimeline
Callan Family Office, LLCin group Callan Family Office, LLC1,829$421K0.01%+113F-HRTimelineGroup
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC1,825$420K<0.01%new13F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO1,818$419K<0.01%+3013F-HRTimelineGroup
BOOTHBAY FUND MANAGEMENT, LLC1,813$418K0.01%+63913F-HRTimeline
Tidal Investments LLCin group Tidal Investments LLC1,812$417K<0.01%+27313F-HRTimelineGroup
iSAM Funds (UK) Ltdin group iSAM Funds (UK) Ltd1,776$409K0.2%new13F-HRTimelineGroup
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…1,733$399K<0.01%+113F-HRTimelineGroup
Balyasny Asset Management L.P.in group Balyasny Asset Management1,698$391K<0.01%-40713F-HRTimelineGroup
Baker Avenue Asset Management, LP1,675$386K0.01%new13F-HRTimeline
Cetera Investment Advisers1,675$386K<0.01%-68913F-HRTimeline
HUB Investment Partners, LLC1,662$383K0.01%+27213F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…1,635$377K<0.01%013F-HRTimeline
Empowered Funds, LLC1,614$372K<0.01%new13F-HR/ATimeline
Kera Capital Partners, Inc.1,600$369K0.05%new13F-HRTimeline
NorthCrest Asset Manangement, LLC1,513$364K0.01%+42313F-HRTimeline
OREGON PUBLIC EMPLOYEES RETIREMENT FUND1,534$353K<0.01%-4513F-HRTimeline
Aaron Wealth Advisors LLC1,529$352K0.02%new13F-HRTimeline
YOUSIF CAPITAL MANAGEMENT, LLC1,514$349K<0.01%-13913F-HRTimeline
Brooklyn Investment Group1,470$339K0.01%new13F-HRTimeline
1620 INVESTMENT ADVISORS, INC.1,469$338K0.23%+47913F-HRTimeline
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…1,460$336K<0.01%+26013F-HRTimelineGroup
Lombard Odier Asset Management (USA) Co…1,432$330K0.18%new13F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…1,410$325K0.01%013F-HRTimelineGroup
BRIGHTON JONES LLC1,402$323K0.01%new13F-HR/ATimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC1,346$314K<0.01%-1,69013F-HRTimelineGroup
Versant Capital Management, Inc1,358$313K0.03%+79113F-HRTimeline
Farther Finance Advisors, LLC1,302$306K<0.01%+8013F-HRTimeline
GREENWOOD CAPITAL ASSOCIATES LLC1,325$305K0.03%new13F-HRTimeline
Cresset Asset Management, LLC1,323$305K<0.01%+9813F-HRTimeline
GREAT VALLEY ADVISOR GROUP, INC.in group GREAT VALLEY ADVISOR GROUP, I…1,317$304K0.01%013F-HRTimelineGroup
Bull Harbor Capital LLC1,316$303K0.08%13F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\1,310$302K<0.01%+10013F-HRTimelineGroup
SIMPLEX TRADING, LLC1,292$298K0.01%+38113F-HRTimeline
Claret Asset Management Corp1,241$286K0.03%013F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…1,237$285K<0.01%new13F-HRTimelineGroup
SAGE PRIVATE WEALTH GROUP, LLC1,237$285K0.14%-6313F-HRTimeline
Numerai GP LLC1,230$283K0.03%new13F-HRTimeline