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Main Street Research LLC
Period ended Jun 30, 2026 · Latest filing Jul 29, 2026
These quarterly holdings are delayed and may not include all assets or short positions.
Values are from the reporting date, not current prices or purchase costs.
The same security may appear in multiple rows.
Source: SEC
Reported portfolio value
Quarter-end reported holdings; not current value or investment performance.
View reported values
- Jun 30, 2026: $2,118,491,302
More quarters will appear as history becomes available.
Top holdings
Top 10 at Jun 30, 2026. Matching entries are combined; security classes and options remain separate. Shares exclude principal amounts; option shares reflect the reported underlying amount.
View top holdings values
- NVIDIA CORPORATION · COM · 67066G104 · shares: $126,067,297
- MICRON TECHNOLOGY INC · COM · 595112103 · shares: $125,397,358
- APPLE INC · COM · 037833100 · shares: $117,517,404
- ALPHABET INC · CAP STK CL A · 02079K305 · shares: $113,267,393
- TAIWAN SEMICONDUCTOR MANUFAC · SPONSORED ADS · 874039100 · shares: $109,090,838
- CORNING INC · COM · 219350105 · shares: $100,654,235
- SPDR SERIES TRUST · ST STR SP BIOT · 78464A870 · shares: $91,271,321
- ISHARES TR · INTERNATIONAL SL · 46434V266 · shares: $87,764,241
- ASML HLDG NV · N Y REGISTRY SHS · N07059210 · shares: $84,344,300
- BROADCOM INC · COM · 11135F101 · shares: $80,778,363
Reported holdings
140 reported entries| Issuer | Class | CUSIP | Type | Shares / principal | Reported value (USD) |
|---|---|---|---|---|---|
| STRYKER CORPORATION | COM | 863667101 | — | 1,221 shares | $384,313 |
| TJX COS INC NEW | COM | 872540109 | — | 2,524 shares | $382,386 |
| SHOPIFY INC | CL A SUB VTG SHS | 82509L107 | — | 3,345 shares | $381,932 |
| SMUCKER J M CO | COM NEW | 832696405 | — | 3,337 shares | $375,413 |
| EXPEDIA GROUP INC | COM NEW | 30212P303 | — | 1,431 shares | $366,164 |
| ISHARES TR | RUS 1000 GRW ETF | 464287614 | — | 2,780 shares | $345,193 |
| MATCH GROUP INC NEW | COM | 57667L107 | — | 8,746 shares | $332,785 |
| ENTEGRIS INC | COM | 29362U104 | — | 1,832 shares | $329,504 |
| COHERENT CORP | COM | 19247G107 | — | 823 shares | $324,649 |
| XYLEM INC | COM | 98419M100 | — | 2,729 shares | $322,595 |
| UNITED AIRLS HLDGS INC | COM | 910047109 | — | 2,344 shares | $318,761 |
| IDEXX LABS INC | COM | 45168D104 | — | 600 shares | $315,864 |
| BRISTOL-MYERS SQUIBB CO | COM | 110122108 | — | 5,252 shares | $302,604 |
| AT&T INC | COM | 00206R102 | — | 14,071 shares | $291,270 |
| VANGUARD TAX-MANAGED FDS | VAN FTSE DEV MKT | 921943858 | — | 4,086 shares | $291,128 |
| SCHWAB STRATEGIC TR | US LRG CAP ETF | 808524201 | — | 9,835 shares | $289,439 |
| MONSTER BEVERAGE CORP NEW | COM | 61174X109 | — | 2,967 shares | $285,188 |
| PTC INC | COM | 69370C100 | — | 2,438 shares | $276,981 |
| COMCAST CORP NEW | CL A | 20030N101 | — | 11,037 shares | $270,958 |
| ISHARES TR | CORE S&P US GWT | 464287671 | — | 1,435 shares | $269,909 |
| SCHWAB STRATEGIC TR | INTL EQTY ETF | 808524805 | — | 9,606 shares | $266,086 |
| SCHWAB STRATEGIC TR | FUNDAMENTAL US L | 808524771 | — | 8,541 shares | $265,614 |
| ISHARES TR | DOW JONES US ETF | 464287846 | — | 1,446 shares | $263,577 |
| ISHARES TR | CORE S&P US VLU | 464287663 | — | 2,371 shares | $261,166 |
| PARKER-HANNIFIN CORP | COM | 701094104 | — | 265 shares | $259,202 |
| ROBINHOOD MKTS INC | COM CL A | 770700102 | — | 2,581 shares | $258,823 |
| GARTNER INC | COM | 366651107 | — | 1,991 shares | $258,073 |
| PACIFIC BIOSCIENCES CALIF IN | COM | 69404D108 | — | 152,100 shares | $255,528 |
| QUALCOMM INC | COM | 747525103 | — | 1,375 shares | $254,009 |
| NORFOLK SOUTHN CORP | COM | 655844108 | — | 806 shares | $253,560 |
| CHENIERE ENERGY INC | COM NEW | 16411R208 | — | 1,010 shares | $241,400 |
| ABEONA THERAPEUTICS INC | COM NEW | 00289Y206 | — | 38,514 shares | $238,017 |
| THE CIGNA GROUP | COM | 125523100 | — | 846 shares | $233,225 |
| ABBOTT LABORATORIES | COM | 002824100 | — | 2,493 shares | $226,253 |
| HIMS & HERS HEALTH INC | COM CL A | 433000106 | — | 6,200 shares | $214,954 |
| AON PLC | SHS CL A | G0403H108 | — | 628 shares | $208,301 |
| KONINKLIJKE PHILIPS N V | NY REGIS SHS NEW | 500472303 | — | 7,655 shares | $208,139 |
| COCA COLA CO | COM | 191216100 | — | 2,558 shares | $207,903 |
| DATADOG INC | CL A COM | 23804L103 | — | 791 shares | $205,945 |
| TMC THE METALS COMPANY INC | COM | 87261Y106 | — | 10,000 shares | $44,300 |