Main Street Research
SAUSALITO, CAfiles as Main Street Research LLC
$2.1bn in 140 US stocks at the end of 30 June 2026. The top 10 are 48.9% of the money. It changed about 13.7% of the portfolio this quarter.
Value
$2.1bn
Stocks
140
Top 10 share
48.9%
Turnover
13.7%
What changed this quarter
New
Bought for the first time this quarter.
- Ross StoresROST1.5% of the fund
- TechnipFMCFTI1.3% of the fund
- Hut 8HUT<0.1% of the fund
- United Airlines HoldingsUAL<0.1% of the fund
- Vanguard Tax-Managed FDSVEA<0.1% of the fund
- Monster BeverageMNST<0.1% of the fund
- Ishares TRIUSG<0.1% of the fund
- Ishares TRIUSV<0.1% of the fund
- QualcommQCOM<0.1% of the fund
- Abeona TherapeuticsABEO<0.1% of the fund
- Hims & Hers HealthHIMS<0.1% of the fund
- Coca-ColaKO<0.1% of the fund
- DatadogDDOG<0.1% of the fund
Added
Bought more of a stock they already held.
- Taiwan Semiconductor ManufacturingTSM5.1% of the fund+2%
- Ishares TRISCF4.1% of the fund+4%
- Amazon.comAMZN3.1% of the fund+2%
- AmphenolAPH2.6% of the fund+3%
- Royal Bank of CanadaRY2.2% of the fund+2%
- Costco WholesaleCOST2.1% of the fund+3%
- BarclaysBCS2.1% of the fund+91%
- AstrazenecaAZN1.8% of the fund+4%
- MicrosoftMSFT1.2% of the fund+2%
- Fair IsaacFICO0.5% of the fund+13%
- TeslaTSLA0.3% of the fund+5%
- Wells Fargo & CompanyWFC0.2% of the fund+4%
- State STR Spdr S&P 500 ETF TSPY0.1% of the fund+7%
- Advanced Micro DevicesAMD<0.1% of the fund+5%
- Ishares TRISTB<0.1% of the fund+2%
- Schwab Strategic TRSCHI<0.1% of the fund+5%
- IntelINTC<0.1% of the fund+24%
- Ishares TRIGLB<0.1% of the fund+5%
- Cirrus LogicCRUS<0.1% of the fund+4%
- CitigroupC<0.1% of the fund+5%
- State STR Spdr DOW Jones INDDIA<0.1% of the fund+3%
- Curtiss WrightCW<0.1% of the fund+3%
- Colgate-PalmoliveCL<0.1% of the fund+12%
- Horton D RDHI<0.1% of the fund+7%
- Mitsubishi UFJ Financial GroupMUFG<0.1% of the fund+7%
Cut
Sold some of their stake.
- MckessonMCK1.0% of the fund-58%
- AlphabetGOOG0.4% of the fund-3%
- Palo Alto NetworksPANW0.4% of the fund-31%
- Eli LillyLLY0.2% of the fund-6%
- VisaV0.2% of the fund-9%
- ExxonMobil HoldingsXOM0.1% of the fund-6%
- IsharesURTH0.1% of the fund-8%
- ChevronCVX0.1% of the fund-5%
- AbbVieABBV0.1% of the fund-5%
- McDonald'sMCD0.1% of the fund-42%
- Ishares TRIVV<0.1% of the fund-29%
- Palantir TechnologiesPLTR<0.1% of the fund-93%
- 3MMMM<0.1% of the fund-3%
- Cisco SystemsCSCO<0.1% of the fund-4%
- Invesco QQQ TRQQQ<0.1% of the fund-13%
- RTXRTX<0.1% of the fund-5%
- MerckMRK<0.1% of the fund-13%
- PultegroupPHM<0.1% of the fund-3%
- SalesforceCRM<0.1% of the fund-16%
- CloroxCLX<0.1% of the fund-6%
- Goldman Sachs GroupGS<0.1% of the fund-7%
- Uber TechnologiesUBER<0.1% of the fund-6%
- Vanguard Index FDSVOO<0.1% of the fund-17%
- Union PacificUNP<0.1% of the fund-42%
- BlackstoneBX<0.1% of the fund-5%
Sold out
Sold their entire stake.
- World Gold TRGLDM-100%
- Ishares Bitcoin Trust ETFIBIT-100%
- Walt DisneyDIS-100%
- Spdr Gold TRGLD-100%
- Intuitive SurgicalISRG-100%
- Boston ScientificBSX-100%
- AccentureACN-100%
- IntuitINTU-100%
- Coinbase GlobalCOIN-100%
- ConocoPhillipsCOP-100%
- NetflixNFLX-100%
- MastercardMA-100%
- AdobeADBE-100%
- American ExpressAXP-100%
- Home DepotHD-100%
- T-Mobile USTMUS-100%
- Capital One FinancialCOF-100%
- NextEra EnergyNEE-100%
- Teledyne TechnologiesTDY-100%
- Vertiv HoldingsVRT-100%
- Omada HealthOMDA-100%
Holdings
- Spdr Series TrustXBI
- Share
- 4.3%
- Value
- $91m
- Shares
- 576,754
Held
- Ishares TRISCF
- Share
- 4.1%
- Value
- $88m
- Shares
- 2,027,356
+4%
- IsharesEWY
- Share
- 3.4%
- Value
- $73m
- Shares
- 360,865
Held
- Royal Bank of CanadaRY
- Share
- 2.2%
- Value
- $47m
- Shares
- 227,136
+2%
- BHP Billiton LimitedBHP
- Share
- 2.1%
- Value
- $44m
- Shares
- 528,051
Held
- CamecoCCJ
- Share
- 1.9%
- Value
- $40m
- Shares
- 391,529
Held
- Berkshire Hathaway INC DELBRK-A
- Share
- 0.2%
- Value
- $4m
- Shares
- 5
Held
- Ishares TRIXUS
- Share
- 0.2%
- Value
- $4m
- Shares
- 39,073
Held
- IsharesURTH
- Share
- 0.1%
- Value
- $3m
- Shares
- 13,511
-8%
- State STR Spdr S&P 500 ETF TSPY
- Share
- 0.1%
- Value
- $3m
- Shares
- 3,485
+7%
- Ishares TRIVV
- Share
- <0.1%
- Value
- $1m
- Shares
- 1,810
-29%
- Ishares TRISTB
- Share
- <0.1%
- Value
- $1m
- Shares
- 24,592
+2%
- Invesco QQQ TRQQQ
- Share
- <0.1%
- Value
- $1m
- Shares
- 1,531
-13%
- Schwab Strategic TRSCHI
- Share
- <0.1%
- Value
- $1m
- Shares
- 46,488
+5%
- Ishares TRIGLB
- Share
- <0.1%
- Value
- $986,839
- Shares
- 19,721
+5%
- State STR Spdr DOW Jones INDDIA
- Share
- <0.1%
- Value
- $804,919
- Shares
- 1,541
+3%
- Vanguard Index FDSVOO
- Share
- <0.1%
- Value
- $758,581
- Shares
- 1,104
-17%
- Select Sector Spdr TRXLK
- Share
- <0.1%
- Value
- $533,456
- Shares
- 2,800
Held
- Netease.comNTES
- Share
- <0.1%
- Value
- $523,452
- Shares
- 4,085
Held
- Ishares TRSOXX
- Share
- <0.1%
- Value
- $494,273
- Shares
- 771
Held
- Vanguard Index FDSVTI
- Share
- <0.1%
- Value
- $464,400
- Shares
- 1,255
-3%
- Ishares TRIGM
- Share
- <0.1%
- Value
- $460,641
- Shares
- 2,816
+46%
| Company | Share of fund | Value | Shares | Change |
|---|---|---|---|---|
| NvidiaNVDA | 6.0% | $126m | 630,053 | Held |
| Micron TechnologyMU | 5.9% | $125m | 108,636 | Held |
| AppleAAPL | 5.5% | $118m | 406,129 | Held |
| AlphabetGOOGL | 5.3% | $113m | 316,947 | Held |
| Taiwan Semiconductor ManufacturingTSM | 5.1% | $109m | 228,429 | +2% |
| CorningGLW | 4.8% | $101m | 394,058 | Held |
| Spdr Series TrustXBI | 4.3% | $91m | 576,754 | Held |
| Ishares TRISCF | 4.1% | $88m | 2,027,356 | +4% |
| ASML Holding NVASML | 4.0% | $84m | 42,396 | Held |
| BroadcomAVGO | 3.8% | $81m | 213,841 | Held |
| JPMorgan ChaseJPM | 3.5% | $74m | 226,299 | Held |
| IsharesEWY | 3.4% | $73m | 360,865 | Held |
| CaterpillarCAT | 3.1% | $66m | 61,759 | Held |
| Amazon.comAMZN | 3.1% | $65m | 274,738 | +2% |
| GE VernovaGEV | 2.8% | $60m | 50,802 | Held |
| AmphenolAPH | 2.6% | $54m | 308,716 | +3% |
| Johnson & JohnsonJNJ | 2.3% | $48m | 188,640 | Held |
| Royal Bank of CanadaRY | 2.2% | $47m | 227,136 | +2% |
| Costco WholesaleCOST | 2.1% | $44m | 47,497 | +3% |
| BHP Billiton LimitedBHP | 2.1% | $44m | 528,051 | Held |
| BarclaysBCS | 2.1% | $44m | 1,621,490 | +91% |
| Meta PlatformsMETA | 1.9% | $41m | 72,187 | Held |
| Keysight TechnologiesKEYS | 1.9% | $40m | 115,108 | Held |
| CamecoCCJ | 1.9% | $40m | 391,529 | Held |
| WalmartWMT | 1.9% | $39m | 348,650 | Held |
| AstrazenecaAZN | 1.8% | $37m | 197,417 | +4% |
| Ross StoresROST | 1.5% | $32m | 150,755 | New |
| TechnipFMCFTI | 1.3% | $27m | 413,657 | New |
| MicrosoftMSFT | 1.2% | $26m | 69,182 | +2% |
| Procter & GamblePG | 1.0% | $22m | 151,073 | Held |
| MckessonMCK | 1.0% | $22m | 28,475 | -58% |
| Fair IsaacFICO | 0.5% | $11m | 9,580 | +13% |
| AlphabetGOOG | 0.4% | $8m | 22,707 | -3% |
| Palo Alto NetworksPANW | 0.4% | $8m | 23,343 | -31% |
| Berkshire HathawayBRK-B | 0.3% | $6m | 11,980 | Held |
| Arista NetworksANET | 0.3% | $6m | 34,937 | Held |
| TeslaTSLA | 0.3% | $5m | 12,943 | +5% |
| Charles SchwabSCHW | 0.2% | $4m | 45,887 | Held |
| Wells Fargo & CompanyWFC | 0.2% | $4m | 48,542 | +4% |
| Berkshire Hathaway INC DELBRK-A | 0.2% | $4m | 5 | Held |
| Ishares TRIXUS | 0.2% | $4m | 39,073 | Held |
| Eli LillyLLY | 0.2% | $3m | 2,746 | -6% |
| VisaV | 0.2% | $3m | 9,369 | -9% |
| ExxonMobil HoldingsXOM | 0.1% | $3m | 22,437 | -6% |
| AutodeskADSK | 0.1% | $3m | 14,240 | Held |
| IsharesURTH | 0.1% | $3m | 13,511 | -8% |
| ChevronCVX | 0.1% | $3m | 16,080 | -5% |
| State STR Spdr S&P 500 ETF TSPY | 0.1% | $3m | 3,485 | +7% |
| AbbVieABBV | 0.1% | $2m | 9,721 | -5% |
| McDonald'sMCD | 0.1% | $2m | 8,913 | -42% |
| Advanced Micro DevicesAMD | <0.1% | $2m | 3,308 | +5% |
| Ishares TRIVV | <0.1% | $1m | 1,810 | -29% |
| Palantir TechnologiesPLTR | <0.1% | $1m | 11,444 | -93% |
| 3MMMM | <0.1% | $1m | 7,610 | -3% |
| Ishares TRISTB | <0.1% | $1m | 24,592 | +2% |
| Cisco SystemsCSCO | <0.1% | $1m | 9,682 | -4% |
| Invesco QQQ TRQQQ | <0.1% | $1m | 1,531 | -13% |
| RTXRTX | <0.1% | $1m | 5,752 | -5% |
| MerckMRK | <0.1% | $1m | 8,298 | -13% |
| Texas InstrumentsTXN | <0.1% | $1m | 3,560 | Held |
| Schwab Strategic TRSCHI | <0.1% | $1m | 46,488 | +5% |
| IntelINTC | <0.1% | $1m | 7,350 | +24% |
| Ishares TRIGLB | <0.1% | $986,839 | 19,721 | +5% |
| PultegroupPHM | <0.1% | $980,365 | 7,145 | -3% |
| ON SemiconductorON | <0.1% | $979,718 | 10,363 | Held |
| SalesforceCRM | <0.1% | $908,941 | 5,802 | -16% |
| Cirrus LogicCRUS | <0.1% | $881,674 | 5,936 | +4% |
| Lam ResearchLRCX | <0.1% | $873,695 | 2,016 | Held |
| CloroxCLX | <0.1% | $852,661 | 8,934 | -6% |
| Goldman Sachs GroupGS | <0.1% | $820,221 | 811 | -7% |
| CitigroupC | <0.1% | $812,188 | 5,803 | +5% |
| State STR Spdr DOW Jones INDDIA | <0.1% | $804,919 | 1,541 | +3% |
| Curtiss WrightCW | <0.1% | $786,555 | 1,038 | +3% |
| Uber TechnologiesUBER | <0.1% | $779,761 | 10,806 | -6% |
| Colgate-PalmoliveCL | <0.1% | $769,195 | 8,390 | +12% |
| Vanguard Index FDSVOO | <0.1% | $758,581 | 1,104 | -17% |
| HSBC HoldingsHSBC | <0.1% | $739,039 | 7,772 | Held |
| Bank of AmericaBAC | <0.1% | $676,296 | 11,869 | Held |
| Horton D RDHI | <0.1% | $663,736 | 4,075 | +7% |
| Union PacificUNP | <0.1% | $656,336 | 2,413 | -42% |
| Mitsubishi UFJ Financial GroupMUFG | <0.1% | $650,821 | 32,721 | +7% |
| FortinetFTNT | <0.1% | $647,355 | 4,214 | +3% |
| BlackstoneBX | <0.1% | $592,586 | 5,036 | -5% |
| Delta Air LinesDAL | <0.1% | $586,593 | 6,263 | +23% |
| CrowdStrike HoldingsCRWD | <0.1% | $567,776 | 744 | +18% |
| Analog DevicesADI | <0.1% | $554,052 | 1,395 | -6% |
| Select Sector Spdr TRXLK | <0.1% | $533,456 | 2,800 | Held |
| eBayEBAY | <0.1% | $529,583 | 4,739 | +14% |
| Netease.comNTES | <0.1% | $523,452 | 4,085 | Held |
| OracleORCL | <0.1% | $513,649 | 3,505 | Held |
| Ishares TRSOXX | <0.1% | $494,273 | 771 | Held |
| KLAKLAC | <0.1% | $483,943 | 1,604 | -9% |
| Automatic Data ProcessingADP | <0.1% | $468,503 | 2,092 | -6% |
| Trane TechnologiesTT | <0.1% | $465,620 | 948 | Held |
| Vanguard Index FDSVTI | <0.1% | $464,400 | 1,255 | -3% |
| Ishares TRIGM | <0.1% | $460,641 | 2,816 | +46% |
| Hut 8HUT | <0.1% | $460,164 | 3,986 | New |
| PepsiCoPEP | <0.1% | $455,565 | 3,365 | -10% |
| LennarLEN | <0.1% | $405,667 | 4,483 | +15% |
| Thermo Fisher ScientificTMO | <0.1% | $401,088 | 800 | -11% |
Showing the largest 100 of 140.
Over time and by industry
Value over time
Jun '25
Dec '25
Jun '26
Value is up 31.9% since 30 June 2025.
Where the money is
Technology38.9%
Industrials10.2%
Financial services8.8%
Media & telecom7.7%
Health care5.5%
Everyday goods5.1%
Retail & consumer5.1%
Materials1.9%
Energy1.6%
Other15.1%
From the fund's 13F filings. They list US stocks and options only, 45 days after each quarter, and leave out cash, bonds, shorts and foreign shares.