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Main Street Research LLC

CIK 1513211 · latest 13F filed 29 July 2026 · Read the filing on EDGAR

Main Street Research LLC reported 140 US-listed holdings worth $2.12 billion in its 13F for the quarter ended 30 June 2026, filed 29 July 2026. Its largest: NVIDIA Corp. (6.0%), Micron Technology Inc. (5.9%) and Apple Inc. (5.5%). Against the quarter before, it opened 13 positions, added to 66, trimmed 51 and sold out of 21.

Reported holdings$2.12B+23.3% on Q1 2026
Positions140-8 on Q1 2026
The largest ten48.9%of its reported holdings
Latest 13FQ2 2026filed 29 July 2026
Where the money is
Added toTrimmed
NVDA6.0%MU5.9%AAPL5.5%GOOGL5.3%TSM5.1%GLW4.8%XBI4.3%ISCF4.1%ASML4.0%AVGO3.8%JPM3.5%EWY3.4%CAT3.1%AMZN3.1%126 more38.0%

The 14 largest of its 140 positions, each sized by its share of the reported holdings, coloured by the change in shares against Q1 2026.

Reported holdings, quarter by quarter
Q3 2024: $1.59 billion in 109 positions$1.59BQ3 24Q4 2024: $1.60 billion in 110 positions$1.60BQ4 24Q1 2025: $1.53 billion in 101 positions$1.53BQ1 25Q2 2025: $1.61 billion in 115 positions$1.61BQ2 25Q3 2025: $1.85 billion in 129 positions$1.85BQ3 25Q4 2025: $1.75 billion in 129 positions$1.75BQ4 25Q1 2026: $1.72 billion in 148 positions$1.72BQ1 26Q2 2026: $2.12 billion in 140 positions$2.12BQ2 26

What the fund reported holding at each quarter's end; hover a bar for the number of positions

What it did on the quarter

Opened 13Added 66Held 10Trimmed 51Sold out 21
Opened: 13Added: 66Held: 10Trimmed: 51Sold out: 21

Its positions against its 13F for the quarter to 31 March 2026; a change under 0.1% of a position counts as held

Opened 13

  1. ROSS Stores, Inc. ROST$32.1 million
  2. TechnipFMC plc FTI$27.4 million
  3. Hut 8 Corp. HUT$460,164
  4. United Airlines Holdings, Inc. UAL$318,761
  5. Vanguard Ftse Developed Markets VEA$291,128
  6. Monster Beverage Corp. MNST$285,188
  7. iShares Trust IUSG$269,909
  8. iShares Trust IUSV$261,166

and 5 more in the table below

Added to 66

  1. Barclays plc BCS+770,519 shares · +91%
  2. iShares Trust ISCF+68,729 shares · +4%
  3. Taiwan Semiconductor Manufacturing Company Limited TSM+5,270 shares · +2%
  4. NVIDIA Corp. NVDA+9,277 shares · +1%
  5. Alphabet Inc. GOOGL+5,161 shares · +2%
  6. Corning Inc. GLW+6,340 shares · +2%
  7. SPDR Ser Trust XBI+9,275 shares · +2%
  8. ASML Holding N.V. ASML+709 shares · +2%

and 58 more in the table below

Trimmed 51

  1. McKesson Corp. MCK-39,299 shares · -58%
  2. Palantir Technologies Inc. PLTR-156,203 shares · -93%
  3. Palo Alto Networks Inc. PANW-10,681 shares · -31%
  4. McDonald's Corp. MCD-6,570 shares · -42%
  5. iShares Core S&P 500 ETF IVV-744 shares · -29%
  6. Micron Technology Inc. MU-473 shares · -0%
  7. Union Pacific Corp. UNP-1,716 shares · -42%
  8. Visa Inc. V-877 shares · -9%

and 43 more in the table below

Sold out of 21

  1. SPDR Gold MiniShares GLDM$43.5 million last quarter
  2. iShares Bitcoin Trust ETF IBIT$7.5 million last quarter
  3. Walt Disney Co. DIS$1.0 million last quarter
  4. SPDR Gold Trust GLD$777,104 last quarter
  5. Intuitive Surgical Inc. ISRG$386,771 last quarter
  6. Boston Scientific Corp. BSX$376,061 last quarter
  7. Accenture plc ACN$333,722 last quarter
  8. Intuit Inc. INTU$308,039 last quarter

What it holds

CompanySharesValueOf its bookChange in shares
NVIDIA Corp. NVDA630,053$126.1 million5.95%+9,277
Micron Technology Inc. MU108,636$125.4 million5.92%-473
Apple Inc. AAPL406,129$117.5 million5.55%+2,551
Alphabet Inc. GOOGL316,947$113.3 million5.35%+5,161
Taiwan Semiconductor Manufacturing Company Limited TSM228,429$109.1 million5.15%+5,270
Corning Inc. GLW394,058$100.7 million4.75%+6,340
SPDR Ser Trust XBI576,754$91.3 million4.31%+9,275
iShares Trust ISCF2,027,356$87.8 million4.14%+68,729
ASML Holding N.V. ASML42,396$84.3 million3.98%+709
Broadcom Inc. AVGO213,841$80.8 million3.81%+1,439
JPMorgan Chase & Co. JPM226,299$74.1 million3.50%+2,537
iShares Inc. EWY360,865$72.9 million3.44%-1,009
Caterpillar Inc. CAT61,759$65.8 million3.10%+649
Amazon.com Inc. AMZN274,738$65.5 million3.09%+5,545
GE Vernova Inc. GEV50,802$59.7 million2.82%+110
Amphenol Corp. APH308,716$54.4 million2.57%+7,673
Johnson & Johnson JNJ188,640$47.9 million2.26%+1,758
Royal Bank of Canada RY227,136$47.0 million2.22%+4,568
Costco Wholesale Corp. COST47,497$44.4 million2.10%+1,358
BHP Group Limited BHP528,051$44.0 million2.08%+8,839
Barclays plc BCS1,621,490$43.6 million2.06%+770,519
Meta Platforms, Inc. META72,187$40.7 million1.92%+1,225
Keysight Technologies, Inc. KEYS115,108$40.3 million1.90%+2,171
Cameco Corp. CCJ391,529$39.9 million1.88%+2,452
Walmart Inc. WMT348,650$39.5 million1.86%+3,781
AstraZeneca PLC AZN197,417$37.4 million1.77%+6,773
ROSS Stores, Inc. ROST150,755$32.1 million1.51%new
TechnipFMC plc FTI413,657$27.4 million1.29%new
Microsoft Corp. MSFT69,182$25.8 million1.22%+1,640
Procter & Gamble Co. PG151,073$22.2 million1.05%-554
McKesson Corp. MCK28,475$21.5 million1.02%-39,299
Fair Isaac Corp. FICO9,580$11.4 million0.54%+1,116
Alphabet Inc. GOOG22,707$8.0 million0.38%-730
Palo Alto Networks Inc. PANW23,343$8.0 million0.38%-10,681
Berkshire Hathaway Inc. Class B BRKB11,980$6.0 million0.28%+2
Arista Networks, Inc. ANET34,937$5.9 million0.28%-44
Tesla, Inc. TSLA12,943$5.4 million0.26%+606
Charles Schwab Corp. SCHW45,887$4.2 million0.20%-473
Wells Fargo & Company WFC48,542$4.0 million0.19%+1,660
Berkshire Hathaway Inc. Del5$3.7 million0.18%no change
iShares Trust IXUS39,073$3.7 million0.18%+490
Eli Lilly & Co. LLY2,746$3.3 million0.16%-162
Visa Inc. V9,369$3.2 million0.15%-877
ExxonMobil Holdings Corp. XOM22,437$3.1 million0.14%-1,487
Autodesk, Inc. ADSK14,240$2.8 million0.13%-163
iShares Inc. URTH13,511$2.7 million0.13%-1,231
Chevron Corp. CVX16,080$2.7 million0.13%-771
SPDR S&P 500 SPY3,485$2.6 million0.12%+222
AbbVie Inc. ABBV9,721$2.4 million0.12%-537
McDonald's Corp. MCD8,913$2.4 million0.11%-6,570
Advanced Micro Devices Inc. AMD3,308$1.9 million0.09%+163
iShares Core S&P 500 ETF IVV1,810$1.4 million0.06%-744
Palantir Technologies Inc. PLTR11,444$1.3 million0.06%-156,203
3M Co. MMM7,610$1.2 million0.06%-260
iShares Core 1-5 Year USD Bond ETF ISTB24,592$1.2 million0.06%+534
Cisco Systems, Inc. CSCO9,682$1.1 million0.05%-375
Invesco QQQ Trust QQQ1,531$1.1 million0.05%-238
RTX Corp. RTX5,752$1.1 million0.05%-314
Merck & Co., Inc. MRK8,298$1.1 million0.05%-1,223
Texas Instruments Inc. TXN3,560$1.1 million0.05%+33
Schwab Strategic Trust SCHI46,488$1.1 million0.05%+2,162
Intel Corp. INTC7,350$1.0 million0.05%+1,431
iShares ETFs IGLB19,721$986,8390.05%+970
PulteGroup Inc. PHM7,145$980,3650.05%-237
ON Semiconductor Corp. ON10,363$979,7180.05%+13
Salesforce, Inc. CRM5,802$908,9410.04%-1,122
Cirrus Logic, Inc. CRUS5,936$881,6740.04%+202
Lam Research Corp. LRCX2,016$873,6950.04%+28
Clorox Co. CLX8,934$852,6610.04%-603
Goldman Sachs Group Inc. GS811$820,2210.04%-63
Citigroup Inc. C5,803$812,1880.04%+277
SPDR Dow Jones Indl Average DIA1,541$804,9190.04%+39
Curtiss Wright Corp. CW1,038$786,5550.04%+26
Uber Technologies, Inc. UBER10,806$779,7610.04%-685
Colgate-Palmolive Co. CL8,390$769,1950.04%+906
Vanguard S&P 500 VOO1,104$758,5810.04%-228
HSBC Holdings plc HSBC7,772$739,0390.03%+39
Bank of America Corp. BAC11,869$676,2960.03%-74
D.R. Horton, Inc. DHI4,075$663,7360.03%+267
Union Pacific Corp. UNP2,413$656,3360.03%-1,716
Mitsubishi UFJ Financial Group Inc. MUFG32,721$650,8210.03%+2,273
Fortinet, Inc. FTNT4,214$647,3550.03%+139
Blackstone Inc. BX5,036$592,5860.03%-281
Delta Air Lines, Inc. DAL6,263$586,5930.03%+1,172
CrowdStrike Holdings, Inc. CRWD744$567,7760.03%+116
Analog Devices Inc. ADI1,395$554,0520.03%-96
Technology Select Sector SPDR ETF XLK2,800$533,4560.03%no change
Ebay Inc. EBAY4,739$529,5830.02%+564
NetEase, Inc. NTES4,085$523,4520.02%no change
Oracle Corp. ORCL3,505$513,6490.02%+8
iShares Trust SOXX771$494,2730.02%no change
KLA Corp. KLAC1,604$483,9430.02%+1,427
Automatic Data Processing Inc. ADP2,092$468,5030.02%-140
Trane Technologies plc TT948$465,6200.02%+1
VG Totl STK Vprs VTI1,255$464,4000.02%-34
iShares Trust IGM2,816$460,6410.02%+884
Hut 8 Corp. HUT3,986$460,1640.02%new
PepsiCo Inc. PEP3,365$455,5650.02%-357
Lennar Corp. LEN4,483$405,6670.02%+579
Thermo Fisher Scientific Inc. TMO800$401,0880.02%-100
Stryker Corp. SYK1,221$384,3130.02%-542
TJX Companies Inc. TJX2,524$382,3860.02%+605
Shopify Inc. SHOP3,345$381,9320.02%+909
J.M. Smucker Co. SJM3,337$375,4130.02%+479
Expedia Group, Inc. EXPE1,431$366,1640.02%+243
iShares Trust IWF2,780$345,1930.02%+2,085
Match Group, Inc. MTCH8,746$332,7850.02%+1,735
Entegris Inc. ENTG1,832$329,5040.02%-20
Coherent Corp. COHR823$324,6490.02%-23
Xylem Inc. XYL2,729$322,5950.02%-590
United Airlines Holdings, Inc. UAL2,344$318,7610.02%new
IDEXX Laboratories Inc. IDXX600$315,8640.01%+153
Bristol-Myers Squibb Co. BMY5,252$302,6040.01%-1,690
AT&T Inc. T14,071$291,2700.01%-6,122
Vanguard Ftse Developed Markets VEA4,086$291,1280.01%new
Schwab US Large Cap SCHX9,835$289,4390.01%-800
Monster Beverage Corp. MNST2,967$285,1880.01%new
PTC Inc. PTC2,438$276,9810.01%-43
Comcast Corp. CMCSA11,037$270,9580.01%-2,483
iShares Trust IUSG1,435$269,9090.01%new
Schwab Strategic Trust SCHF9,606$266,0860.01%-600
Schwab Fundamental US Large Com FNDX8,541$265,6140.01%no change
iShares Trust IYY1,446$263,5770.01%no change
iShares Trust IUSV2,371$261,1660.01%new
Parker-Hannifin Corp. PH265$259,2020.01%+4
Robinhood Markets, Inc. HOOD2,581$258,8230.01%-709
Gartner Inc. IT1,991$258,0730.01%-124
Pacific Biosciences Calif in PACB152,100$255,5280.01%no change
Qualcomm Inc. QCOM1,375$254,0090.01%new
Norfolk Southern Corp. NSC806$253,5600.01%-71
Cheniere Energy Inc. LNG1,010$241,4000.01%no change
Abeona Therapeutics Inc. ABEO38,514$238,0170.01%new
Cigna Group CI846$233,2250.01%+75
Abbott Laboratories ABT2,493$226,2530.01%-1,366
Hims & Hers Health, Inc. HIMS6,200$214,9540.01%new
Aon plc AON628$208,3010.01%+6
Koninklijke Philips N.V. PHG7,655$208,1390.01%+235
Coca-Cola Co. KO2,558$207,9030.01%new
Datadog, Inc. DDOG791$205,9450.01%new
TMC the Metals Company Inc. TMC10,000$44,3000.00%no change
Every US-listed position in the fund's 13F for the quarter ended 30 June 2026, by the value it reported.
Read moreChange is shares against its 13F for the quarter before; the 21 it sold out of are in the box above.