MondegarAI
S&CO INC

Q4 2025 · 13F-HR

S&CO INCholdings as filed

Filed 2026-02-05 · accession 0001082461-26-000001

$1.6M
Reported value
218
Positions
2025-12-31
Period end
View analyzed profile →PRO

The Brief · S&CO INC · Q4 2025

AI · grounded in 13F

S&CO INC closed its position in LIBERTY MEDIA CORP-LIBERTY LIV [[stock:LLYVK*]], reducing its holdings by $17,164. The fund also exited positions in FMC CORP FMC and OCCIDENTAL PETROLEUM CORP OXY. Offsetting these sells, the fund established a new position in LIBERTY MEDIA CORP-LIBERTY LIV LLYVK worth $14,683 and accumulated shares in ELI LILLY & CO COM LLY.

Holdings as filed

CUSIPTickerIssuerValue% port.SharesClassVoting
594918104MSFTMICROSOFT CORP$83,3265.18%172,297CommonSOLE
084670702BRK/BBERKSHIRE HATHAWAY INC CL B$82,5505.13%164,230CommonSOLE
30231G102XOMEXXON MOBIL CORP$63,4063.94%526,898CommonSOLE
037833100AAPLAPPLE INC$63,3293.93%232,949CommonSOLE
149123101CATCATERPILLAR INC COM$60,3783.75%105,396CommonSOLE
278865100ECLECOLAB INC$59,6103.70%227,070CommonSOLE
171340102CHDCHURCH & DWIGHT CO INC$54,0403.36%644,488CommonSOLE
053015103ADPAUTOMATIC DATA PROCESSING INC$52,1513.24%202,743CommonSOLE
58933y105MERCK & CO INC$44,7912.78%425,531CommonSOLE
023135106AMZNAMAZON.COM INC$43,9882.73%190,573CommonSOLE
02079K107GOOGALPHABET INC CLASS C$37,0852.30%118,183CommonSOLE
478160104JNJJOHNSON & JOHNSON$32,7592.03%158,298CommonSOLE
13321L108CCJCAMECO CORP$32,6002.02%356,326CommonSOLE
78463v107SPDR GOLD TRUST$31,9281.98%80,565CommonSOLE
74365P108PROSYPROSUS NV -SPON ADR$31,1731.94%2,511,156CommonSOLE
02079K305GOOGLALPHABET INC CAP STK CL A$29,8311.85%95,307CommonSOLE
002824100ABTABBOTT LABS$28,4041.76%226,710CommonSOLE
883556102TMOTHERMO FISHER SCIENTIFIC INC C$24,3241.51%41,979CommonSOLE
61945C103MOSMOSAIC COMPANY$23,4601.46%973,872CommonSOLE
009158106APDAIR PRODUCTS & CHEMICALS INC C$23,2361.44%94,067CommonSOLE
532457108LLYELI LILLY & CO COM$21,7181.35%20,209CommonSOLE
70450Y103PYPLPAYPAL HOLDINGS INC$20,1791.25%345,655CommonSOLE
03674X106ARANTERO RESOURCES CORP$16,5201.03%479,399CommonSOLE
101137107BSXBOSTON SCIENTIFIC CORP$16,2931.01%170,881CommonSOLE
907818108UNPUNION PACIFIC CORP$16,0421.00%69,353CommonSOLE
359694106FULH.B. FULLER CO.$15,6350.97%262,956CommonSOLE
697435105PANWPALO ALTO NETWORKS INC$15,3520.95%83,346CommonSOLE
67066g104NVIDIA CORP COM$14,9090.93%79,944CommonSOLE
530909308LLYVKLIBERTY MEDIA CORP-LIBERTY LIV$14,6830.91%176,571CommonSOLE
829933100SIRISIRIUS XM HOLDINGS INC$14,0250.87%701,442CommonSOLE
G7709Q104RPRXROYALTY PHARMA PLC CL A$13,8470.86%358,377CommonSOLE
91324p102UNITEDHEALTH GROUP INC COM$13,4310.83%40,687CommonSOLE
74624m102PURE STORAGE, INC.$12,7600.79%190,420CommonSOLE
78464a870SPDR S&P BIOTECH ETF$12,4640.77%102,227CommonSOLE
531229755FWONKLIBERTY FORMULA ONE SER C$12,0710.75%122,543CommonSOLE
713448108PEPPEPSICO INC$11,8090.73%82,282CommonSOLE
369604301GEGE AEROSPACE COM (NEW)$11,5460.72%37,485CommonSOLE
G54950103LINLINDE PLC$11,1080.69%26,052CommonSOLE
92826C839VVISA INC. CL A$11,0460.69%31,498CommonSOLE
g5960l103MEDTRONIC PLC$10,3860.65%108,128CommonSOLE
775711104ROLROLLINS INC COM$9,3860.58%156,393CommonSOLE
57636Q104MAMASTERCARD INC - A$9,3610.58%16,399CommonSOLE
001055102AFLAFLAC INC COM$9,2150.57%83,570CommonSOLE
03769M106APOAPOLLO ASSET MANAGEMENT INC.$9,1020.57%62,880CommonSOLE
36828a101GE VERNOVA INC$8,5460.53%13,076CommonSOLE
009066101ABNBAIRBNB INC A$8,4620.53%62,355CommonSOLE
17275r102CISCO SYSTEMS INC COM$8,3600.52%108,538CommonSOLE
46625h100JP MORGAN CHASE & CO$7,7120.48%23,935CommonSOLE
36168q104GFL ENVIRONMENTAL$7,5410.47%175,599CommonSOLE
518439104ELESTEE LAUDER COMPANIES-CL A$7,2950.45%69,668CommonSOLE
437076102HDHOME DEPOT INC COM$7,1870.45%20,887CommonSOLE
28176e108EDWARDS LIFESCIENCES CORP$6,9470.43%81,497CommonSOLE
032654105ADIANALOG DEVICES INC COM$6,7220.42%24,789CommonSOLE
922042858VWOVANGUARD FTSE EMERGING MARKET$6,2860.39%116,943CommonSOLE
617446448MSMORGAN STANLEY COM$6,2380.39%35,142CommonSOLE
596278101MIDDMIDDLEBY CORPORATION$6,2140.39%41,800CommonSOLE
531229771FWONALIBERTY MEDIA CORP-FORMULA-A$6,0090.37%67,239CommonSOLE
h1467j104CHUBB LIMITED$5,9040.37%18,916CommonSOLE
530307305LBRDKLIBERTY BROADBAND-C$5,8610.36%120,600CommonSOLE
75513e101RTX CORP.$5,7960.36%31,608CommonSOLE
g01767105ALKERMES PLC$5,6450.35%201,760CommonSOLE
G9001E102LILALIBERTY LATIN AMERICA-CL A$5,6050.35%758,576CommonSOLE
98138h101WORKDAY INC A$5,5990.35%26,072CommonSOLE
863667101SYKSTRYKER CORP.$5,3790.33%15,307CommonSOLE
09073m104BIO-TECHNE CORPORATION$5,3330.33%90,695CommonSOLE
679295105OKTAOKTA, INC.$5,2670.33%60,918CommonSOLE
G87052109TELTE CONNECTIVITY PLC$5,1180.32%22,498CommonSOLE
060505104BACBANK OF AMERICA CORP$5,0860.32%92,484CommonSOLE
459200101IBMINTERNATIONAL BUSINESS MACHINE$4,9720.31%16,788CommonSOLE
88579y1013M COMPANY COM$4,9710.31%31,055CommonSOLE
921908844VIGVANGUARD DIVIDEND APPRECIATION$4,7660.30%21,687CommonSOLE
g61188127LIBERTY GLOBAL LTD-C$4,7520.30%430,465CommonSOLE
25278x109DIAMONDBACK ENERGY INC$4,7050.29%31,300CommonSOLE
166764100CVXCHEVRON CORP NEW COM$4,6750.29%30,679CommonSOLE
92939u106WEC ENERGY GROUP INC COM$4,6300.29%43,907CommonSOLE
172967424CCITIGROUP INC COM NEW$4,6250.29%39,641CommonSOLE
30212p303EXPEDIA GROUP INC COM$4,6170.29%16,299CommonSOLE
461202103INTUINTUIT, INC.$4,5950.29%6,938CommonSOLE
941848103WATWATERS CORP COM$4,1600.26%10,954CommonSOLE
464287309IVWISHARES S&P 500/BARRA GROWTH I$4,1530.26%33,695CommonSOLE
781154109RBRKRUBRIK INC A$4,1000.25%53,612CommonSOLE
45841n107INTERACTIVE BROKERS GROUP INC$4,0560.25%63,080CommonSOLE
530909100LLYVALIBERTY MEDIA CORP-LIBERTY LIV$3,8750.24%47,547CommonSOLE
30303m102META PLATFORMS INC$3,7790.23%5,725CommonSOLE
336433107FSLRFIRST SOLAR, INC.$3,7630.23%14,406CommonSOLE
25401t603DIGITALBRIDGE GROUP INC$3,7160.23%242,300CommonSOLE
92189f106VANECK GOLD MINERS ETF$3,6520.23%42,589CommonSOLE
872540109TJXTJX COS INC NEW COM$3,4340.21%22,361CommonSOLE
922042874VGKVANGUARD MSCI EUROPEAN INDEX E$3,3440.21%40,000CommonSOLE
949746101WMT2WELLS FARGO & CO COM$3,3220.21%35,649CommonSOLE
02043q107ALNYLAM PHARMACEUTICALS INC$3,2600.20%8,200CommonSOLE
530307107LBRDALIBERTY BROADBAND SER A$3,2430.20%67,172CommonSOLE
192446102CTSHCOGNIZANT TECHNOLOGY SOLUTIONS$3,2310.20%38,935CommonSOLE
742718109PGPROCTER & GAMBLE CO$3,0990.19%21,629CommonSOLE
235851102DHRDANAHER CORP COM$3,0190.19%13,189CommonSOLE
21037t109CONSTELLATION ENERGY CORPORATI$3,0090.19%8,520CommonSOLE
46120E602ISRGINTUITIVE SURGICAL, INC.$2,9000.18%5,121CommonSOLE
97717w851WISDOMTREE JAPAN HEDGED EQUITY$2,8830.18%20,000CommonSOLE
g29183103EATON CORP PLC$2,8580.18%8,976CommonSOLE
771195104RHHBYROCHE HOLDING LTD SPONSORED AD$2,7670.17%53,444CommonSOLE
76155x100REVOLUTION MEDICINES INC$2,7210.17%34,171CommonSOLE
44891N208IACIAC INC$2,7140.17%69,425CommonSOLE
580135101MCDMCDONALD'S CORP COM$2,5810.16%8,445CommonSOLE
28414h103ELANCO ANIMAL HEALTH, INC$2,5180.16%111,284CommonSOLE
G61188101LBTYALIBERTY GLOBAL LTD-A$2,4770.15%222,413CommonSOLE
00846u101AGILENT TECHNOLOGIES INC COM$2,4040.15%17,674CommonSOLE
025816109AXPAMERICAN EXPRESS CO COM$2,3620.15%6,386CommonSOLE
452327109ILMNILLUMINA, INC.$2,3600.15%18,000CommonSOLE
65339f101NEXTERA ENERGY INC COM$2,3050.14%28,720CommonSOLE
88160r101TESLA MOTORS INC$2,3000.14%5,115CommonSOLE
922042775VEUVANGUARD FTSE ALL-WORLD EX-US$2,2990.14%31,256CommonSOLE
22160k105COSTCO WHOLESALE CORP COM$2,2200.14%2,575CommonSOLE
31488v107FERGUSON ENTERPRISES INC$2,1460.13%9,643CommonSOLE
89422g107TRAVERE THERAPEUTICS, INC.$2,1390.13%56,000CommonSOLE
G9001E128LILAKLIBERTY LATIN AMERICA-CL C$2,1100.13%282,861CommonSOLE
444859102HUMHUMANA INC.$2,0580.13%8,038CommonSOLE
75281A109RRCRANGE RESOURCES CORP$1,8680.12%53,000CommonSOLE
92532f100VERTEX PHARMACEUTICALS INC COM$1,8600.12%4,103CommonSOLE
45784p101INSULET CORPORATION$1,8140.11%6,385CommonSOLE
70975l107PENUMBRA, INC.$1,7100.11%5,500CommonSOLE
36164v800GCI LIBERTY, INC. CLASS C$1,6840.10%45,275CommonSOLE
533900106LECOLINCOLN ELECTRIC HOLDINGS, INC$1,6770.10%7,000CommonSOLE
548661107LOWLOWE'S COMPANIES, INC$1,5440.10%6,403CommonSOLE
457669307INSMINSMED INCORPORATED$1,4440.09%8,300CommonSOLE
835699307SONYSONY GROUP CORPORATION ADR$1,4080.09%55,000CommonSOLE
464285204IAUISHARES GOLD TRUST$1,3940.09%17,174CommonSOLE
00287y109ABBVIE INC$1,3910.09%6,092CommonSOLE
464286582SCJISHARES MSCI JAPAN SMALL CAP E$1,3770.09%15,000CommonSOLE
771049103RBLXROBLOX CORP.$1,3720.09%16,940CommonSOLE
00724f101ADOBE INC$1,3600.08%3,887CommonSOLE
717081103PFEPFIZER INC$1,3310.08%53,488CommonSOLE
231561101CWCURTISS-WRIGHT CORP$1,3070.08%2,372CommonSOLE
494368103KMBKIMBERLY-CLARK CORP COM$1,2020.07%11,914CommonSOLE
354613101BENFRANKLIN RESOURCES INC$1,1100.07%46,495CommonSOLE
438516106HONHONEYWELL INTERNATIONAL INC CO$1,1000.07%5,642CommonSOLE
40412c101HCA HEALTHCARE INC COM$1,0720.07%2,298CommonSOLE
464287598IWDISHARES RUSSELL 1000 VALUE IND$1,0620.07%5,050CommonSOLE
13646k108CANADIAN PACIFIC KANSAS CITY L$1,0300.06%14,000CommonSOLE
M7s64h106MONDAY.COM$1,0140.06%6,875CommonSOLE
74276r102PRIVIA HEALTH GROUP, INC.$9950.06%42,000CommonSOLE
64125c109NEUROCRINE BIOSCIENCES, INC.$9920.06%7,000CommonSOLE
001084102AGCOAGCO CORP COM$9720.06%9,325CommonSOLE
922908769VTIVANGUARD TOTAL STOCK MKT ETF$9660.06%2,882CommonSOLE
464287408IVEISHARES S&P 500 VALUE INDEX ET$9220.06%4,350CommonSOLE
573874104MRVLMARVELL TECHNOLOGY, INC.$8980.06%10,573CommonSOLE
26875P101EOGEOG RESOURCES INC$8840.05%8,420CommonSOLE
h01301128ALCON INC.$8820.05%11,196CommonSOLE
16119P108CHTRCHARTER COMMUNICATIONS INC$8640.05%4,143CommonSOLE
592688105MTDMETTLER-TOLEDO INTERNATIONAL I$8360.05%600CommonSOLE
931142103WMTWALMART INC COM$8360.05%7,512CommonSOLE
29364g103ENTERGY CORP (NEW) COM$8280.05%8,966CommonSOLE
488401100KMPRKEMPER CORP$8050.05%19,870CommonSOLE
464287499IWRISHARES RUSSELL MIDCAP INDEX E$8030.05%8,344CommonSOLE
047726302BATRKATLANTA BRAVES HOLDINGS IN-C$7900.05%20,038CommonSOLE
155123102CETCENTRAL SECURITIES CORP$7840.05%15,473CommonSOLE
79466l302SALESFORCE INC$7520.05%2,839CommonSOLE
464287614IWFISHARES RUSSELL 1000 GROWTH IN$7340.05%1,552CommonSOLE
g8994e103TRANE TECHNOLOGIES PLC$7310.05%1,880CommonSOLE
370334104GISGENERAL MILLS INC COM$7270.05%15,646CommonSOLE
00206R102TAT&T INC$7210.04%29,034CommonSOLE
191216100KOCOCA-COLA CO COM$7150.04%10,236CommonSOLE
91307c102UNITED THERAPEUTICS CORP$6970.04%1,431CommonSOLE
46266c105IQVIA HOLDINGS INC$6760.04%3,000CommonSOLE
98978V103ZTSZOETIS INC COM USD0.01 CL A$6060.04%4,824CommonSOLE
693475105PNCPNC FINANCIAL SERVICES GROUP I$5840.04%2,800CommonSOLE
854231107SXISTANDEX INTL CORP$5830.04%2,685CommonSOLE
90400d108ULTRAGENYX PHARMACEUTICAL, INC$5800.04%25,255CommonSOLE
925458101VWDRYVESTAS WIND SYSTEM A/S UnSPONS$5530.03%60,950CommonSOLE
099502106BAHBOOZ ALLEN HAMILTON HLDG CORP$4940.03%5,860CommonSOLE
03831w108APPLOVIN CORPORATION (QSBS STO$4540.03%675CommonSOLE
093712107BEBLOOM ENERGY CORPORATION CLASS$4340.03%5,000CommonSOLE
458140100INTCINTEL CORP$4320.03%11,734CommonSOLE
11135f101BROADCOM INC COM$4300.03%1,245CommonSOLE
464287648IWOISHARES RUSSELL 2000 GROWTH IN$4290.03%1,329CommonSOLE
36266g107GE HEALTHCARE TECHNOLOGIES INC$4270.03%5,218CommonSOLE
244199105DEDEERE & CO COM$4000.02%860CommonSOLE
097023105BABOEING CO COM$3880.02%1,790CommonSOLE
921943858VEAVANGUARD FTSE DEVELOPED ETF$3840.02%6,150CommonSOLE
36164v602GCI LIBERTY, INC. CLASS A$3770.02%10,249CommonSOLE
98983L108ZWSZURN ELKAY WATER SOLUTIONS COR$3710.02%8,000CommonSOLE
571748102MRSHMARSH & MCLENNAN COS INC$3710.02%2,000CommonSOLE
760759100RSGREPUBLIC SERVICES, INC.$3700.02%1,750CommonSOLE
00508y102ACUITY INC.$3600.02%1,000CommonSOLE
882508104TXNTEXAS INSTRUMENTS INC COM$3590.02%2,070CommonSOLE
45168d104IDEXX LABS INC COM$3380.02%500CommonSOLE
27627n105EASTERN BANKSHARES, INC$3370.02%18,305CommonSOLE
68389x105ORACLE CORP COM$3260.02%1,675CommonSOLE
465741106ITRIITRON INC COM$3060.02%3,300CommonSOLE
124765108CAECAE INC.$3040.02%10,000CommonSOLE
25809k105DOORDASH INC (QSBS STOCK)$3030.02%1,341CommonSOLE
553368101MPMP MATERIALS CORP CLASS A$3030.02%6,000CommonSOLE
291011104EMREMERSON ELECTRIC CO COM$3020.02%2,280CommonSOLE
172908105CTASCINTAS CORP COM$3000.02%1,600CommonSOLE
670108109NVZMYNOVONESIS(NOVOZYMES A/S) ADR C$2880.02%4,500CommonSOLE
184496107CLHCLEAN HARBORS INC$2810.02%1,200CommonSOLE
666807102NOCNORTHRUP GRUMMAN CORP.$2800.02%492CommonSOLE
031162100AMGNAMGEN INC COM$2720.02%834CommonSOLE
G16258108BEPBROOKFIELD RENEWABLE PARTNERS$2690.02%10,000CommonSOLE
922908363VOOVANGUARD S&P 500 ETF$2650.02%423CommonSOLE
293594107ENVXENOVIX CORPORATION$2550.02%35,000CommonSOLE
81211k100SEALED AIR CORPORATION$2480.02%6,000CommonSOLE
00130H105AESAES CORPORATION$2430.02%17,000CommonSOLE
94106l109WASTE MANAGEMENT, INC$2410.01%1,100CommonSOLE
g3265r107APTIV PLC$2280.01%3,000CommonSOLE
125523100CICIGNA GROUP$2260.01%824CommonSOLE
758750103RRXREGAL REXNORD CORP$2240.01%1,600CommonSOLE
219350105GLWCORNING INC COM$2230.01%2,550CommonSOLE
92338c103VERALTO CORP.$2220.01%2,233CommonSOLE
686688102ORAORMAT TECHNOLOGIES INC COM$2200.01%2,000CommonSOLE
74251v102PRINCIPAL FINANCIAL GROUP INC$2200.01%2,500CommonSOLE
303250104FICOFAIR ISAAC CORP COM$2190.01%130CommonSOLE
98419m100XYLEM INC.$2170.01%1,600CommonSOLE
501889208LKQLKQ CORP COM$2170.01%7,200CommonSOLE
174610105CFGCITIZENS FINANCIAL GROUP INC C$2040.01%3,500CommonSOLE
368736104GNRCGENERAC HOLDINGS INC.$2040.01%1,502CommonSOLE
51504D105LDGYYLANDIS GYR GROUP AG UnSponsore$1940.01%12,000CommonSOLE
29270J100ERIIENERGY RECOVERY, INC.$1610.01%12,000CommonSOLE
184499101CLNECLEAN ENERGY FUELS CORP.$1260.01%60,000CommonSOLE

Source: SEC EDGAR · raw 13F holdings as filed. The Class column shows the option type when reported (Put/Call) or Common when the issuer's equity is held directly. 13F discloses long positions only.