Main Street Research Llc Portfolio Stock Holdings
Main Street Research Llc disclosed 148 stock positions valued at approximately $1.7 billion in its latest SEC 13F filing. The largest holdings include NVIDIA CORPORATION, APPLE INC, and ALPHABET INC. The filing reflects positions held as of March 31, 2026 and was filed on April 30, 2026.
- Report Period
- March 31, 2026
- No. of Stocks
- 148
- Portfolio Value
- $1.7B
Holdings by Sector
Main Street Research Llc Portfolio Holdings in Q1 2026
146 holdings in the latest reporting period.
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| Company | Symbol | Sector | Portfolio % | Shares | Change (Shares) | Change % | Value |
|---|---|---|---|---|---|---|---|
| NVIDIA CORPORATION | NVDA | Technology | 6.30% | 620,776 | +24,932 | +4.18% | $108,263,294 |
| APPLE INC | AAPL | Technology | 5.96% | 403,578 | +112,641 | +38.72% | $102,424,173 |
| ALPHABET INC | GOOGL | Communication Services | 5.22% | 311,786 | +14,242 | +4.79% | $89,657,148 |
| ISHARES TR | ISCF | Other | 4.76% | 1,958,627 | +50,827 | +2.66% | $81,851,022 |
| TAIWAN SEMICONDUCTOR MANUFAC | TSM | Technology | 4.39% | 223,159 | +5,012 | +2.30% | $75,416,584 |
| SPDR SERIES TRUST | XBI | Other | 4.22% | 567,479 | +206,953 | +57.40% | $72,484,093 |
| JPMORGAN CHASE & CO | JPM | Financial Services | 3.83% | 223,762 | +1,843 | +0.83% | $65,821,928 |
| BROADCOM INC | AVGO | Technology | 3.83% | 212,402 | +7,007 | +3.41% | $65,740,470 |
| MCKESSON CORP | MCK | Healthcare | 3.41% | 67,774 | +413 | +0.61% | $58,649,241 |
| AMAZON COM INC | AMZN | Consumer Cyclical | 3.26% | 269,193 | +9,344 | +3.60% | $56,064,761 |
| ASML HLDG NV | ASML | Other | 3.20% | 41,687 | +1,569 | +3.91% | $55,061,440 |
| CORNING INC | GLW | Technology | 3.07% | 387,718 | +387,718 | +100.00% | $52,718,016 |
| COSTCO WHOLESALE CORPORATION | COST | Consumer Defensive | 2.68% | 46,139 | -16,227 | -26.02% | $45,974,280 |
| JOHNSON & JOHNSON | JNJ | Healthcare | 2.66% | 186,882 | +7,564 | +4.22% | $45,681,390 |
| ISHARES INC | EWY | Other | 2.59% | 361,874 | +6,413 | +1.80% | $44,514,121 |
| GE VERNOVA INC | GEV | Utilities | 2.57% | 50,692 | +1,531 | +3.11% | $44,249,091 |
| WORLD GOLD TR | GLDM | Other | 2.53% | 469,451 | +7,135 | +1.54% | $43,513,413 |
| CATERPILLAR INC | CAT | Industrials | 2.52% | 61,110 | +1,551 | +2.60% | $43,293,991 |
| WALMART INC | WMT | Consumer Defensive | 2.49% | 344,869 | +6,474 | +1.91% | $42,860,264 |
| CAMECO CORP | CCJ | Energy | 2.46% | 389,077 | +7,209 | +1.89% | $42,257,653 |
| META PLATFORMS INC | META | Communication Services | 2.36% | 70,962 | -15,585 | -18.01% | $40,599,690 |
| AMPHENOL CORP | APH | Technology | 2.21% | 301,043 | +5,686 | +1.93% | $38,036,757 |
| BHP BILLITON LIMITED | BHP | Basic Materials | 2.20% | 519,212 | +519,212 | +100.00% | $37,767,481 |
| MICRON TECHNOLOGY INC | MU | Technology | 2.14% | 109,109 | +103,786 | +1949.77% | $36,861,339 |
| ROYAL BK CDA | RY | Financial Services | 2.10% | 222,568 | +222,568 | +100.00% | $36,007,051 |
| KEYSIGHT TECHNOLOGIES INC | KEYS | Technology | 1.86% | 112,937 | +112,937 | +100.00% | $31,890,021 |
| MICROSOFT CORP | MSFT | Technology | 1.45% | 67,542 | -100,665 | -59.85% | $25,001,923 |
| PALANTIR TECHNOLOGIES INC | PLTR | Technology | 1.43% | 167,647 | -272,603 | -61.92% | $24,523,403 |
| PROCTER & GAMBLE CO | PG | Consumer Defensive | 1.27% | 151,627 | +543 | +0.36% | $21,901,068 |
| BARCLAYS PLC | BCS | Financial Services | 1.05% | 850,971 | -831,866 | -49.43% | $18,006,546 |
| FAIR ISAAC CORP | FICO | Technology | 0.53% | 8,464 | +5,972 | +239.65% | $9,035,659 |
| ISHARES BITCOIN TRUST ETF | IBIT | Other | 0.44% | 196,085 | +16,545 | +9.22% | $7,533,586 |
| ALPHABET INC | GOOG | Communication Services | 0.39% | 23,437 | +3,346 | +16.65% | $6,723,215 |
| BERKSHIRE HATHAWAY INC DEL | BRK-B | Financial Services | 0.33% | 11,978 | -138 | -1.14% | $5,739,858 |
| PALO ALTO NETWORKS INC | PANW | Technology | 0.32% | 34,024 | +20,789 | +157.08% | $5,454,728 |
| MCDONALDS CORP | MCD | Consumer Cyclical | 0.28% | 15,483 | -3,105 | -16.70% | $4,811,858 |
| TESLA INC | TSLA | Consumer Cyclical | 0.27% | 12,337 | -411 | -3.22% | $4,586,457 |
| SCHWAB CHARLES CORP | SCHW | Financial Services | 0.25% | 46,360 | +14,578 | +45.87% | $4,356,950 |
| ARISTA NETWORKS INC | ANET | Other | 0.25% | 34,981 | +34,981 | +100.00% | $4,294,967 |
| EXXON MOBIL CORP | XOM | Energy | 0.24% | 23,924 | +715 | +3.08% | $4,058,946 |
| WELLS FARGO & CO | WFC | Financial Services | 0.22% | 46,882 | +27,036 | +136.23% | $3,732,276 |
| BERKSHIRE HATHAWAY INC DEL | BRK-A | Financial Services | 0.21% | 5 | - | - | $3,590,700 |
| CHEVRON CORPORATION | CVX | Energy | 0.20% | 16,851 | +7,331 | +77.01% | $3,486,556 |
| AUTODESK INC | ADSK | Technology | 0.20% | 14,403 | +112 | +0.78% | $3,448,078 |
| ISHARES TR | IXUS | Other | 0.19% | 38,583 | +7,010 | +22.20% | $3,342,831 |
| VISA INC | V | Financial Services | 0.18% | 10,246 | -163,842 | -94.11% | $3,096,790 |
| ELI LILLY & CO | LLY | Healthcare | 0.16% | 2,908 | +1,489 | +104.93% | $2,674,363 |
| ISHARES INC | URTH | Other | 0.15% | 14,742 | -396 | -2.62% | $2,653,855 |
| ABBVIE INC | ABBV | Healthcare | 0.13% | 10,258 | +903 | +9.65% | $2,231,037 |
| STATE STR SPDR S&P 500 ETF T | SPY | Other | 0.12% | 3,263 | +600 | +22.53% | $2,121,831 |
| ISHARES TR | IVV | Other | 0.10% | 2,554 | +1,294 | +102.70% | $1,668,063 |
| SALESFORCE INC | CRM | Technology | 0.08% | 6,924 | +560 | +8.80% | $1,292,503 |
| RTX CORPORATION | RTX | Industrials | 0.07% | 6,066 | +570 | +10.37% | $1,170,171 |
| ISHARES TR | ISTB | Other | 0.07% | 24,058 | +1,295 | +5.69% | $1,165,851 |
| MERCK & CO INC | MRK | Healthcare | 0.07% | 9,521 | +1,737 | +22.32% | $1,145,295 |
| 3M CO | MMM | Industrials | 0.07% | 7,870 | -189 | -2.35% | $1,142,960 |
| DISNEY WALT CO | DIS | Communication Services | 0.06% | 10,730 | +10,730 | +100.00% | $1,034,182 |
| INVESCO QQQ TR | QQQ | Other | 0.06% | 1,769 | +424 | +31.52% | $1,020,763 |
| SCHWAB STRATEGIC TR | SCHI | Other | 0.06% | 44,326 | +5,833 | +15.15% | $1,005,314 |
| UNION PAC CORP | UNP | Industrials | 0.06% | 4,129 | +1,787 | +76.30% | $1,001,778 |
| CLOROX CO DEL | CLX | Consumer Defensive | 0.06% | 9,537 | +412 | +4.52% | $988,319 |
| ISHARES TR | IGLB | Other | 0.05% | 18,751 | +2,810 | +17.63% | $930,612 |
| PULTE GROUP INC | PHM | Consumer Cyclical | 0.05% | 7,382 | +7,382 | +100.00% | $868,197 |
| CIRRUS LOGIC INC | CRUS | Technology | 0.05% | 5,734 | +5,734 | +100.00% | $829,251 |
| UBER TECHNOLOGIES INC | UBER | Technology | 0.05% | 11,491 | -435,414 | -97.43% | $826,548 |
| VANGUARD INDEX FDS | VOO | Other | 0.05% | 1,332 | +819 | +159.65% | $796,195 |
| CISCO SYS INC | CSCO | Technology | 0.05% | 10,057 | +373 | +3.85% | $780,287 |
| SPDR GOLD TR | GLD | Other | 0.05% | 1,806 | +1,117 | +162.12% | $777,104 |
| GOLDMAN SACHS GROUP INC | GS | Financial Services | 0.04% | 874 | +874 | +100.00% | $739,395 |
| STATE STR SPDR DOW JONES IND | DIA | Other | 0.04% | 1,502 | +862 | +134.69% | $695,606 |
| CURTISS WRIGHT CORP | CW | Industrials | 0.04% | 1,012 | +95 | +10.36% | $689,293 |
| TEXAS INSTRS INC | TXN | Technology | 0.04% | 3,527 | +1,685 | +91.48% | $684,748 |
| ON SEMICONDUCTOR CORP | ON | Technology | 0.04% | 10,350 | +10,350 | +100.00% | $640,872 |
| ADVANCED MICRO DEVICES INC | AMD | Technology | 0.04% | 3,145 | -277 | -8.09% | $639,787 |
| HSBC HLDGS PLC | HSBC | Financial Services | 0.04% | 7,733 | +37 | +0.48% | $637,895 |
| COLGATE PALMOLIVE CO | CL | Consumer Defensive | 0.04% | 7,484 | +866 | +13.09% | $637,861 |
| CITIGROUP INC | C | Financial Services | 0.04% | 5,526 | +786 | +16.58% | $626,704 |
| BLACKSTONE INC | BX | Financial Services | 0.04% | 5,317 | +5,317 | +100.00% | $611,402 |
| AT&T INC | T | Communication Services | 0.03% | 20,193 | +6,279 | +45.13% | $585,395 |
| BANK AMERICA CORP | BAC | Financial Services | 0.03% | 11,943 | +825 | +7.42% | $582,221 |
| STRYKER CORPORATION | SYK | Healthcare | 0.03% | 1,763 | -80 | -4.34% | $579,427 |
| PEPSICO INC | PEP | Consumer Defensive | 0.03% | 3,722 | +1,606 | +75.90% | $578,011 |
| D R HORTON INC | DHI | Consumer Cyclical | 0.03% | 3,808 | +3,808 | +100.00% | $522,534 |
| MITSUBISHI UFJ FINANCIAL GRO | MUFG | Financial Services | 0.03% | 30,448 | +243 | +0.80% | $516,703 |
| ORACLE CORP | ORCL | Technology | 0.03% | 3,497 | +466 | +15.37% | $514,435 |
| ANALOG DEVICES INC | ADI | Technology | 0.03% | 1,491 | +243 | +19.47% | $474,347 |
| NETEASE COM INC | NTES | Communication Services | 0.03% | 4,085 | +85 | +2.13% | $457,275 |
| AUTOMATIC DATA PROCESSING IN | ADP | Technology | 0.03% | 2,232 | -77 | -3.33% | $453,498 |
| THERMO FISHER SCIENTIFIC INC | TMO | Healthcare | 0.03% | 900 | -251 | -21.81% | $442,377 |
| LAM RESEARCH CORP | LRCX | Other | 0.02% | 1,988 | +464 | +30.45% | $424,784 |
| BRISTOL-MYERS SQUIBB CO | BMY | Healthcare | 0.02% | 6,942 | -7,678 | -52.52% | $421,015 |
| VANGUARD INDEX FDS | VTI | Other | 0.02% | 1,289 | -249 | -16.19% | $413,524 |
| XYLEM INC | XYL | Industrials | 0.02% | 3,319 | +14 | +0.42% | $396,621 |
| ABBOTT LABORATORIES | ABT | Healthcare | 0.02% | 3,859 | +205 | +5.61% | $396,237 |
| TRANE TECHNOLOGIES PLC | TT | Other | 0.02% | 947 | - | - | $394,653 |
| COMCAST CORP NEW | CMCSA | Communication Services | 0.02% | 13,520 | +2,608 | +23.90% | $388,159 |
| INTUITIVE SURGICAL INC | ISRG | Healthcare | 0.02% | 839 | +331 | +65.16% | $386,771 |
| EBAY INC. | EBAY | Consumer Cyclical | 0.02% | 4,175 | +889 | +27.05% | $380,009 |
| BOSTON SCIENTIFIC CORP | BSX | Healthcare | 0.02% | 5,993 | -30 | -0.50% | $376,061 |
| SELECT SECTOR SPDR TR | XLK | Other | 0.02% | 2,800 | +2,800 | +100.00% | $372,120 |