Main Street Research LLC
In its 13F for Q2 2026 (holdings as of June 30, 2026, filed July 29, 2026), Main Street Research LLC reported 140 stock positions worth $2.1 billion. Its top holding was Nvidia (NVDA) at 6.0% of the portfolio, followed by Micron Technology (MU, 5.9%) and Apple (AAPL, 5.5%). Compared with Q1 2026, it opened 13 new positions, sold out of 21, added to 65 and reduced 52. The biggest buy was Corning (GLW, shares +2%) and the biggest sale an exit from SPDR Gold Minishares Trust (GLDM).
- Most Recent 13F
- Q2 2026
- Location
- SAUSALITO, CA
- CIK
- 0001513211
- Portfolio Value
- $2.1B (Q2 2026)
- SEC Filing
- 0001420506-26-001335 ↗ filed Jul 29, 2026
Holdings Value
Holdings 140 stocks · $2.1B
| NVDA Nvidia Corp. | 5.95% | 630,053 | $126.1M | Add +1.5% |
| MU Micron Technology Inc. | 5.92% | 108,636 | $125.4M | Reduce -0.4% |
| AAPL Apple Inc. | 5.55% | 406,129 | $117.5M | Add +0.6% |
| GOOGL Alphabet Inc. Class A | 5.35% | 316,947 | $113.3M | Add +1.7% |
| TSM Taiwan Semiconductor-SP ADR | 5.15% | 228,429 | $109.1M | Add +2.4% |
| GLW Corning Inc. | 4.75% | 394,058 | $100.7M | Add +1.6% |
| XBI SS SPDR S&P Biotech ETF | 4.31% | 576,754 | $91.3M | Add +1.6% |
| ISCF iShares International Small | 4.14% | 2,027,356 | $87.8M | Add +3.5% |
| ASML ASML Holding NV-NY Reg SHS filed as ASML HLDG NV | 3.98% | 42,396 | $84.3M | Add +1.7% |
| AVGO Broadcom Inc. | 3.81% | 213,841 | $80.8M | Add +0.7% |
| JPM JPMorgan Chase & Co. | 3.50% | 226,299 | $74.1M | Add +1.1% |
| EWY iShares MSCI South Korea ETF | 3.44% | 360,865 | $72.9M | Reduce -0.3% |
| CAT Caterpillar Inc. | 3.10% | 61,759 | $65.8M | Add +1.1% |
| AMZN Amazon.com Inc. | 3.09% | 274,738 | $65.5M | Add +2.1% |
| GEV GE Vernova Inc. | 2.82% | 50,802 | $59.7M | Add +0.2% |
| APH Amphenol Corp. Class A | 2.57% | 308,716 | $54.4M | Add +2.5% |
| JNJ Johnson & Johnson | 2.26% | 188,640 | $47.9M | Add +0.9% |
| RY Royal Bank of Canada | 2.22% | 227,136 | $47.0M | Add +2.0% |
| COST Costco Wholesale Corp. | 2.10% | 47,497 | $44.4M | Add +2.9% |
| BHP BHP Group Ltd.-Spon ADR filed as BHP BILLITON LIMITED | 2.08% | 528,051 | $44.0M | Add +1.7% |
| BCS Barclays PLC-Spons ADR | 2.06% | 1,621,490 | $43.6M | Add +90.5% |
| META Meta Platforms Inc. Class A | 1.92% | 72,187 | $40.7M | Add +1.7% |
| KEYS Keysight Technologies Inc. | 1.90% | 115,108 | $40.3M | Add +1.9% |
| CCJ Cameco Corp. | 1.88% | 391,529 | $39.9M | Add +0.6% |
| WMT Walmart Inc. | 1.86% | 348,650 | $39.5M | Add +1.1% |
| AZN Astrazeneca PLC | 1.77% | 197,417 | $37.4M | Add +3.5% |
| ROST Ross Stores Inc. | 1.51% | 150,755 | $32.1M | New |
| FTI Technipfmc PLC | 1.29% | 413,657 | $27.4M | New |
| MSFT Microsoft Corp. | 1.22% | 69,182 | $25.8M | Add +2.4% |
| PG The Procter & Gamble Co. | 1.05% | 151,073 | $22.2M | Reduce -0.4% |
| MCK McKesson Corp. | 1.02% | 28,475 | $21.5M | Reduce -58.0% |
| FICO Fair Isaac Corp. | 0.54% | 9,580 | $11.4M | Add +13.2% |
| GOOG Alphabet Inc. Class C | 0.38% | 22,707 | $8.0M | Reduce -3.1% |
| PANW Palo Alto Networks Inc. | 0.38% | 23,343 | $8.0M | Reduce -31.4% |
| BRK.B Berkshire Hathaway Inc. Class B | 0.28% | 11,980 | $6.0M | Add +0.0% |
| ANET Arista Networks Inc. | 0.28% | 34,937 | $5.9M | Reduce -0.1% |
| TSLA Tesla Inc. | 0.26% | 12,943 | $5.4M | Add +4.9% |
| SCHW Schwab (charles) Corp. | 0.20% | 45,887 | $4.2M | Reduce -1.0% |
| WFC Wells Fargo & Co. | 0.19% | 48,542 | $4.0M | Add +3.5% |
| BRK.A Berkshire Hathaway Inc. Class A | 0.18% | 5 | $3.7M | No change |
| IXUS iShares Core Intl Stock ETF | 0.18% | 39,073 | $3.7M | Add +1.3% |
| LLY Eli Lilly & Co. | 0.16% | 2,746 | $3.3M | Reduce -5.6% |
| V Visa Inc. Class A | 0.15% | 9,369 | $3.2M | Reduce -8.6% |
| XOM Exxon Mobil Corp. | 0.14% | 22,437 | $3.1M | Reduce -6.2% |
| ADSK Autodesk Inc. | 0.13% | 14,240 | $2.8M | Reduce -1.1% |
| URTH iShares MSCI World ETF | 0.13% | 13,511 | $2.7M | Reduce -8.3% |
| CVX Chevron Corp. | 0.13% | 16,080 | $2.7M | Reduce -4.6% |
| SPY SS SPDR S&P 500 ETF Trust-US | 0.12% | 3,485 | $2.6M | Add +6.8% |
| ABBV Abbvie Inc. | 0.12% | 9,721 | $2.4M | Reduce -5.2% |
| MCD McDonald's Corp. | 0.11% | 8,913 | $2.4M | Reduce -42.4% |
| AMD Advanced Micro Devices | 0.09% | 3,308 | $1.9M | Add +5.2% |
| IVV iShares Core S&P 500 ETF | 0.06% | 1,810 | $1.4M | Reduce -29.1% |
| PLTR Palantir Technologies Inc. Class A | 0.06% | 11,444 | $1.3M | Reduce -93.2% |
| MMM 3M Co. | 0.06% | 7,610 | $1.2M | Reduce -3.3% |
| ISTB iShares Core 1-5 Year Usd Bo | 0.06% | 24,592 | $1.2M | Add +2.2% |
| CSCO Cisco Systems Inc. | 0.05% | 9,682 | $1.1M | Reduce -3.7% |
| QQQ Invesco QQQ Trust Series 1 | 0.05% | 1,531 | $1.1M | Reduce -13.4% |
| RTX RTX Corp. | 0.05% | 5,752 | $1.1M | Reduce -5.2% |
| MRK Merck & Co. Inc. | 0.05% | 8,298 | $1.1M | Reduce -12.8% |
| TXN Texas Instruments Inc. | 0.05% | 3,560 | $1.1M | Add +0.9% |
| SCHI Schwab 5-10 Year Corporate B | 0.05% | 46,488 | $1.1M | Add +4.9% |
| INTC Intel Corp. | 0.05% | 7,350 | $1.0M | Add +24.2% |
| IGLB iShares 10+ Year Inv GR Corp. | 0.05% | 19,721 | $987K | Add +5.2% |
| PHM Pultegroup Inc. | 0.05% | 7,145 | $980K | Reduce -3.2% |
| ON On Semiconductor | 0.05% | 10,363 | $980K | Add +0.1% |
| CRM Salesforce Inc. | 0.04% | 5,802 | $909K | Reduce -16.2% |
| CRUS Cirrus Logic Inc. | 0.04% | 5,936 | $882K | Add +3.5% |
| LRCX Lam Research Corp. | 0.04% | 2,016 | $874K | Add +1.4% |
| CLX Clorox Company | 0.04% | 8,934 | $853K | Reduce -6.3% |
| GS Goldman Sachs Group Inc. | 0.04% | 811 | $820K | Reduce -7.2% |
| C Citigroup Inc. | 0.04% | 5,803 | $812K | Add +5.0% |
| DIA SS SPDR Dow Jones Indus Avg filed as STATE STR SPDR DOW JONES IND | 0.04% | 1,541 | $805K | Add +2.6% |
| CW Curtiss-Wright Corp. | 0.04% | 1,038 | $787K | Add +2.6% |
| UBER Uber Technologies Inc. | 0.04% | 10,806 | $780K | Reduce -6.0% |
| CL Colgate-Palmolive Co. | 0.04% | 8,390 | $769K | Add +12.1% |
| VOO Vanguard S&P 500 ETF | 0.04% | 1,104 | $759K | Reduce -17.1% |
| HSBC HSBC Holdings PLC-Spons ADR filed as HSBC HLDGS PLC | 0.03% | 7,772 | $739K | Add +0.5% |
| BAC Bank of America Corp. | 0.03% | 11,869 | $676K | Reduce -0.6% |
| DHI D.R. Horton Inc. | 0.03% | 4,075 | $664K | Add +7.0% |
| UNP Union Pacific Corp. | 0.03% | 2,413 | $656K | Reduce -41.6% |
| MUFG Mitsubishi Ufj Finl-Spon ADR | 0.03% | 32,721 | $651K | Add +7.5% |
| FTNT Fortinet Inc. | 0.03% | 4,214 | $647K | Add +3.4% |
| BX Blackstone Inc. | 0.03% | 5,036 | $593K | Reduce -5.3% |
| DAL Delta Air Lines Inc. | 0.03% | 6,263 | $587K | Add +23.0% |
| CRWD CrowdStrike Holdings Inc. Class A | 0.03% | 744 | $568K | Add +18.5% |
| ADI Analog Devices Inc. | 0.03% | 1,395 | $554K | Reduce -6.4% |
| XLK SS Technology Select Sector | 0.03% | 2,800 | $533K | No change |
| EBAY eBay Inc. | 0.03% | 4,739 | $530K | Add +13.5% |
| NTES Netease Inc.-ADR | 0.02% | 4,085 | $523K | No change |
| ORCL Oracle Corp. | 0.02% | 3,505 | $514K | Add +0.2% |
| SOXX iShares Semiconductor ETF | 0.02% | 771 | $494K | No change |
| KLAC KLA Corp. | 0.02% | 1,604 | $484K | Reduce -9.4% |
| ADP Automatic Data Processing | 0.02% | 2,092 | $469K | Reduce -6.3% |
| TT Trane Technologies PLC | 0.02% | 948 | $466K | Add +0.1% |
| VTI VG Morningstar TS MKT ETF-US | 0.02% | 1,255 | $464K | Reduce -2.6% |
| IGM iShares Expanded Tech Sector | 0.02% | 2,816 | $461K | Add +45.8% |
| HUT Hut 8 Corp. | 0.02% | 3,986 | $460K | New |
| PEP Pepsico Inc. | 0.02% | 3,365 | $456K | Reduce -9.6% |
| LEN Lennar Corp. Class A | 0.02% | 4,483 | $406K | Add +14.8% |
| TMO Thermo Fisher Scientific Inc. | 0.02% | 800 | $401K | Reduce -11.1% |
Portfolio Sells Q1 2026 → Q2 2026
| GLDM SPDR Gold Minishares Trust | Sold out | 0.00% | −2.53 |
| MCK McKesson Corp. | Reduce -58.0% | 1.02% | −2.40 |
| PLTR Palantir Technologies Inc. Class A | Reduce -93.2% | 0.06% | −1.36 |
| IBIT iShares Bitcoin Trust ETF | Sold out | 0.00% | −0.44 |
| PG The Procter & Gamble Co. | Reduce -0.4% | 1.05% | −0.23 |
| MCD McDonald's Corp. | Reduce -42.4% | 0.11% | −0.17 |
| XOM Exxon Mobil Corp. | Reduce -6.2% | 0.14% | −0.09 |
| CVX Chevron Corp. | Reduce -4.6% | 0.13% | −0.08 |
| ADSK Autodesk Inc. | Reduce -1.1% | 0.13% | −0.07 |
| DIS The Walt Disney Co. | Sold out | 0.00% | −0.06 |
| SCHW Schwab (charles) Corp. | Reduce -1.0% | 0.20% | −0.05 |
| GLD SPDR Gold Shares | Sold out | 0.00% | −0.05 |
| IVV iShares Core S&P 500 ETF | Reduce -29.1% | 0.06% | −0.03 |
| CRM Salesforce Inc. | Reduce -16.2% | 0.04% | −0.03 |
| V Visa Inc. Class A | Reduce -8.6% | 0.15% | −0.03 |
| UNP Union Pacific Corp. | Reduce -41.6% | 0.03% | −0.03 |
| URTH iShares MSCI World ETF | Reduce -8.3% | 0.13% | −0.03 |
| ISRG Intuitive Surgical Inc. | Sold out | 0.00% | −0.02 |
| BSX Boston Scientific Corp. | Sold out | 0.00% | −0.02 |
| T AT&T Inc. | Reduce -30.3% | 0.01% | −0.02 |
| ACN Accenture PLC Class A | Sold out | 0.00% | −0.02 |
| INTU Intuit Inc. | Sold out | 0.00% | −0.02 |
| CLX Clorox Company | Reduce -6.3% | 0.04% | −0.02 |
| RTX RTX Corp. | Reduce -5.2% | 0.05% | −0.02 |
| MRK Merck & Co. Inc. | Reduce -12.8% | 0.05% | −0.02 |
| COIN Coinbase Global Inc. Class A | Sold out | 0.00% | −0.02 |
| SYK Stryker Corp. | Reduce -30.7% | 0.02% | −0.02 |
| COP Conocophillips | Sold out | 0.00% | −0.01 |
| NFLX Netflix Inc. | Sold out | 0.00% | −0.01 |
| ABBV Abbvie Inc. | Reduce -5.2% | 0.12% | −0.01 |
| MA Mastercard Inc. Class A | Sold out | 0.00% | −0.01 |
| ADBE Adobe Inc. | Sold out | 0.00% | −0.01 |
| AXP American Express Co. | Sold out | 0.00% | −0.01 |
| HD Home Depot Inc. | Sold out | 0.00% | −0.01 |
| TMUS T-Mobile US Inc. | Sold out | 0.00% | −0.01 |
| GOOG Alphabet Inc. Class C | Reduce -3.1% | 0.38% | −0.01 |
| COF Capital One Financial Corp. | Sold out | 0.00% | −0.01 |
| ABT Abbott Laboratories | Reduce -35.4% | 0.01% | −0.01 |
| NEE Nextera Energy Inc. | Sold out | 0.00% | −0.01 |
| PEP Pepsico Inc. | Reduce -9.6% | 0.02% | −0.01 |
| TDY Teledyne Technologies Inc. | Sold out | 0.00% | −0.01 |
| VRT Vertiv Holdings Co. Class A | Sold out | 0.00% | −0.01 |
| OMDA Omada Health Inc. | Sold out | 0.00% | −0.01 |
| UBER Uber Technologies Inc. | Reduce -6.0% | 0.04% | −0.01 |
| VOO Vanguard S&P 500 ETF | Reduce -17.1% | 0.04% | −0.01 |
| BMY Bristol-Myers Squibb Co. | Reduce -24.3% | 0.01% | −0.01 |
| CMCSA Comcast Corp. Class A | Reduce -18.4% | 0.01% | −0.01 |
| MMM 3M Co. | Reduce -3.3% | 0.06% | −0.01 |
| XYL Xylem Inc. | Reduce -17.8% | 0.02% | −0.01 |
| BX Blackstone Inc. | Reduce -5.3% | 0.03% | −0.01 |
Portfolio Buys Q1 2026 → Q2 2026
| GLW Corning Inc. | Add +1.6% | 4.75% | +1.68 |
| ROST Ross Stores Inc. | New | 1.51% | +1.51 |
| FTI Technipfmc PLC | New | 1.29% | +1.29 |
| BCS Barclays PLC-Spons ADR | Add +90.5% | 2.06% | +1.01 |
| ASML ASML Holding NV-NY Reg SHS | Add +1.7% | 3.98% | +0.78 |
| TSM Taiwan Semiconductor-SP ADR | Add +2.4% | 5.15% | +0.76 |
| CAT Caterpillar Inc. | Add +1.1% | 3.10% | +0.59 |
| APH Amphenol Corp. Class A | Add +2.5% | 2.57% | +0.36 |
| GEV GE Vernova Inc. | Add +0.2% | 2.82% | +0.24 |
| GOOGL Alphabet Inc. Class A | Add +1.7% | 5.35% | +0.13 |
| RY Royal Bank of Canada | Add +2.0% | 2.22% | +0.12 |
| XBI SS SPDR S&P Biotech ETF | Add +1.6% | 4.31% | +0.09 |
| AMD Advanced Micro Devices | Add +5.2% | 0.09% | +0.05 |
| KEYS Keysight Technologies Inc. | Add +1.9% | 1.90% | +0.05 |
| INTC Intel Corp. | Add +24.2% | 0.05% | +0.03 |
| HUT Hut 8 Corp. | New | 0.02% | +0.02 |
| LRCX Lam Research Corp. | Add +1.4% | 0.04% | +0.02 |
| UAL United Airlines Holdings Inc. | New | 0.01% | +0.01 |
| FICO Fair Isaac Corp. | Add +13.2% | 0.54% | +0.01 |
| VEA Vanguard Ftse Developed ETF | New | 0.01% | +0.01 |
| MNST Monster Beverage Corp. | New | 0.01% | +0.01 |
| IUSG iShares Core S&P U.S. Growth | New | 0.01% | +0.01 |
| CRWD CrowdStrike Holdings Inc. Class A | Add +18.5% | 0.03% | +0.01 |
| IUSV iShares Core S&P U.S. Value | New | 0.01% | +0.01 |
| QCOM Qualcomm Inc. | New | 0.01% | +0.01 |
| ABEO Abeona Therapeutics Inc. | New | 0.01% | +0.01 |
| FTNT Fortinet Inc. | Add +3.4% | 0.03% | +0.01 |
| TXN Texas Instruments Inc. | Add +0.9% | 0.05% | +0.01 |
| HIMS Hims & Hers Health Inc. | New | 0.01% | +0.01 |
| KO The Coca-Cola Co. | New | 0.01% | +0.01 |
| DDOG Datadog Inc. Class A | New | 0.01% | +0.01 |
| ON On Semiconductor | Add +0.1% | 0.05% | +0.01 |
| IGM iShares Expanded Tech Sector | Add +45.8% | 0.02% | +0.01 |
| DAL Delta Air Lines Inc. | Add +23.0% | 0.03% | +0.01 |
| MTCH Match Group Inc. | Add +24.8% | 0.02% | +0.00 |
| EBAY eBay Inc. | Add +13.5% | 0.03% | +0.00 |
| C Citigroup Inc. | Add +5.0% | 0.04% | +0.00 |
| SJM The JM Smucker Co. | Add +16.8% | 0.02% | +0.00 |
| EXPE Expedia Group Inc. | Add +20.4% | 0.02% | +0.00 |
| SHOP Shopify Inc. Class A | Add +37.3% | 0.02% | +0.00 |
| DHI D.R. Horton Inc. | Add +7.0% | 0.03% | +0.00 |
| MUFG Mitsubishi Ufj Finl-Spon ADR | Add +7.5% | 0.03% | +0.00 |
| IDXX Idexx Laboratories Inc. | Add +34.2% | 0.01% | +0.00 |
| TJX TJX Companies Inc. | Add +31.5% | 0.02% | +0.00 |
| LEN Lennar Corp. Class A | Add +14.8% | 0.02% | −0.00 |
| SPY SS SPDR S&P 500 ETF Trust-US | Add +6.8% | 0.12% | −0.00 |
| CL Colgate-Palmolive Co. | Add +12.1% | 0.04% | −0.00 |
| CI The Cigna Group | Add +9.7% | 0.01% | −0.00 |
| TT Trane Technologies PLC | Add +0.1% | 0.02% | −0.00 |
| PH Parker Hannifin Corp. | Add +1.5% | 0.01% | −0.00 |
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 140 | $2.1B | NVDA, MU, AAPL, GOOGL, TSM |
| Q1 2026 | 148 | $1.7B | NVDA, AAPL, GOOGL, ISCF, TSM |
| Q4 2025 | 129 | $1.7B | NVDA, GOOGL, MSFT, ISCF, AAPL |
| Q3 2025 | 129 | $1.9B | NVDA, AAPL, MSFT, PLTR, HOOD |
| Q2 2025 | 115 | $1.6B | NVDA, JPM, PG, PLTR, COST |
| Q1 2025 | 101 | $1.5B | AAPL, PLTR, PG, V, AMZN |
| Q4 2024 | 110 | $1.6B | AAPL, NVDA, PLTR, AMZN, PG |
| Q3 2024 | 109 | $1.6B | NVDA, AAPL, PG, IWM, AMZN |
| Q2 2024 | 103 | $1.5B | NVDA, AAPL, NVO, PG, MCK |
| Q1 2024 | 107 | $1.5B | NVDA, IWM, NVO, AAPL, PG |