13F Filings History of Main Street Research LLC

Latest 13F report
Q4 2025 - 09 Feb 2026
Value $
$1,748,175,977
Signature - Title
Natalie McMahon - Chief Compliance Officer
Location
Lakeville, CT
Summary
This page shows a list of all the recent 13F filings made by Main Street Research LLC. Form 13F is required to be filed within 45 days of the end of a calendar quarter. Main Street Research LLC reported 129 stock holdings with total value $1,748,175,977 as of Q4 2025. Top holdings included NVDA, GOOGL, MSFT, ISCF, and AAPL.

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Holdings Value
Quarter Holdings Value $ Bought Sold Net Top Holdings Form Type Filing Time
Q4 2025 129 $1,748,175,977 +$205,165,589 -$278,934,486 -$73,768,897 NVDA, GOOGL, MSFT, ISCF, AAPL 13F-HR 09 Feb 2026, 11:06
Q3 2025 129 $1,850,822,523 +$390,163,252 -$259,022,773 +$131,140,479 NVDA, AAPL, MSFT, PLTR, HOOD 13F-HR 13 Nov 2025, 13:11
Q2 2025 115 $1,606,493,954 +$356,561,678 -$524,061,627 -$167,499,949 NVDA, JPM, PG, PLTR, COST 13F-HR 05 Aug 2025, 17:16
Q1 2025 101 $1,530,416,622 +$281,834,566 -$307,786,141 -$25,951,575 AAPL, PLTR, PG, V, AMZN 13F-HR 30 Apr 2025, 13:18
Q4 2024 110 $1,604,978,184 +$103,637,405 -$151,858,913 -$48,221,508 AAPL, NVDA, PLTR, AMZN, PG 13F-HR 07 Feb 2025, 14:37
Q3 2024 109 $1,589,263,451 +$159,687,106 -$92,110,505 +$67,576,601 NVDA, AAPL, PG, IWM, AMZN 13F-HR 12 Nov 2024, 13:21
Q2 2024 103 $1,516,114,918 +$181,463,252 -$133,432,736 +$48,030,516 NVDA, AAPL, NVO, PG, MCK 13F-HR 29 Jul 2024, 13:50
Q1 2024 107 $1,470,898,233 +$88,869,128 -$30,813,632 +$58,055,496 NVDA, IWM, NVO, AAPL, PG 13F-HR 01 May 2024, 13:35
Q4 2023 106 $1,244,619,372 +$270,345,017 -$98,981,685 +$171,363,332 AAPL, IWM, PG, NVO, MCK 13F-HR 30 Jan 2024, 11:50
Q3 2023 91 $970,617,761 +$419,346,017 -$40,860,043 +$378,485,974 AAPL, PG, MCK, NVO, MSFT 13F-HR 03 Nov 2023, 12:24
Q2 2023 93 $627,446,127 +$99,475,670 -$7,833,050 +$91,642,620 AAPL, PG, MCK, NVO, V 13F-HR 08 Aug 2023, 14:16
Q1 2023 91 $506,449,754 +$111,951,404 -$30,277,167 +$81,674,237 AAPL, PG, NVO, MCK, V 13F-HR 01 May 2023, 12:20
Q4 2022 98 $410,656,889 +$61,176,993 -$137,343,725 -$76,166,732 PG, MCK, AAPL, NVO, ELV 13F-HR 06 Feb 2023, 14:32
Q3 2022 97 $454,037,000 +$146,719,480 -$61,707,320 +$85,012,160 UUP, AAPL, TBT, MCK, SH 13F-HR 10 Nov 2022, 18:34
Q2 2022 86 $381,425,000 +$39,488,635 -$579,510,648 -$540,022,013 PG, AAPL, MCK, TBT, ELV 13F-HR 11 Aug 2022, 19:00
Q1 2022 116 $1,061,343,000 +$405,383,676 -$590,378,306 -$184,994,630 AAPL, PG, COST, AMZN, NUE 13F-HR 05 May 2022, 08:53
Q4 2021 141 $1,295,192,000 +$136,192,534 -$82,444,946 +$53,747,588 AAPL, PG, NVDA, MSFT, IWM 13F-HR 09 Feb 2022, 09:27
Q3 2021 137 $1,142,748,000 +$145,314,618 -$221,988,936 -$76,674,318 AAPL, PG, IWM, AMZN, ASML 13F-HR 12 Nov 2021, 12:34
Q2 2021 141 $1,243,776,000 +$174,123,151 -$94,095,643 +$80,027,508 AAPL, PG, IWM, AMZN, ADBE 13F-HR 06 Aug 2021, 06:02
Q1 2021 127 $1,063,183,000 +$172,038,542 -$87,896,101 +$84,142,441 PG, AAPL, IWM, AMZN, ASML 13F-HR 07 May 2021, 06:01
Q4 2020 125 $928,021,000 +$197,570,205 -$89,147,452 +$108,422,753 PG, AAPL, AMZN, ADBE, JD 13F-HR 11 Feb 2021, 18:24
Q3 2020 109 $785,284,000 +$160,300,211 -$50,078,416 +$110,221,795 PG, AAPL, AMZN, ADBE, JD 13F-HR 10 Nov 2020, 14:06
Q2 2020 97 $635,586,000 +$206,159,203 -$52,225,902 +$153,933,301 PG, AAPL, AMZN, ADBE, MSFT 13F-HR 29 Jul 2020, 12:30
Q1 2020 78 $406,554,000 +$142,014,041 -$328,470,566 -$186,456,525 PG, AAPL, ADBE, AMZN, BIIB 13F-HR 01 May 2020, 15:47
Q4 2019 106 $632,125,000 +$81,887,957 -$23,147,663 +$58,740,294 PG, EEM, NEE, ASML, AAPL 13F-HR 28 Jan 2020, 17:18
Q3 2019 94 $531,262,000 +$165,942,263 -$91,746,749 +$74,195,514 PG, NEE, ASML, GOOGL, HD 13F-HR 21 Oct 2019, 15:24
Q2 2019 91 $442,566,000 +$142,776,851 -$25,371,213 +$117,405,638 PG, NEE, BHP, ADBE, ASML 13F-HR 08 Aug 2019, 13:56
Q1 2019 90 $312,776,000 +$35,647,498 -$6,434,740 +$29,212,758 PG, NEE, BHP, ADBE, LW 13F-HR 13 May 2019, 13:17
Q4 2018 76 $255,322,000 +$62,244,589 -$451,266,021 -$389,021,432 PG, LW, NEE, BHP, DE 13F-HR 12 Feb 2019, 20:32
Q3 2018 108 $694,542,000 +$93,225,189 -$73,734,313 +$19,490,876 IWM, AMZN, AAPL, NFLX, UNH 13F-HR 05 Nov 2018, 16:47
Q2 2018 115 $636,988,000 +$62,334,211 -$80,837,461 -$18,503,250 IWM, AMZN, NFLX, AAPL, UNH 13F-HR 25 Jul 2018, 17:08
Q1 2018 113 $630,407,000 +$63,207,621 -$86,217,547 -$23,009,926 IWM, AMZN, AAPL, UNH, JPM Restatement 08 May 2018, 16:33
Q4 2017 107 $655,240,000 +$11,611,769 -$18,694,507 -$7,082,738 IWM, PG, META, AAPL, UNH 13F-HR 05 Feb 2018, 16:43
Q3 2017 115 $618,014,000 +$23,010,865 -$49,169,652 -$26,158,787 IWM, PG, META, LRCX, AAPL 13F-HR 16 Oct 2017, 16:40
Q2 2017 123 $610,629,000 +$66,506,065 -$45,417,282 +$21,088,783 IWM, PG, META, AAPL, UNH 13F-HR 18 Jul 2017, 14:55
Q1 2017 115 $569,398,000 +$73,635,400 -$42,668,450 +$30,966,950 IWM, PG, META, AAPL, UNH 13F-HR 04 May 2017, 16:27
Q4 2016 108 $512,071,000 +$110,853,837 -$114,162,243 -$3,308,406 PG, META, T, UNH, RF 13F-HR 03 Feb 2017, 14:42
Q3 2016 107 $510,318,000 +$73,168,066 -$38,764,494 +$34,403,572 PG, META, T, JNJ, CCI 13F-HR 10 Nov 2016, 14:48
Q2 2016 105 $482,630,000 +$82,667,114 -$830,506 +$81,836,608 PG, T, META, CCI, BMY 13F-HR 11 Aug 2016, 16:14
Q1 2016 93 $386,739,000 +$15,805,196 -$101,142,842 -$85,337,646 PG, META, T, JNJ, D 13F-HR 13 May 2016, 13:30
Q4 2015 117 $467,016,000 +$63,422,505 -$20,417,471 +$43,005,034 PG, META, SCHW, CRM, BMY 13F-HR 04 Feb 2016, 17:13
Q3 2015 117 $418,177,000 +$98,580,675 -$161,976,305 -$63,395,630 PG, META, AGN, SCHW, JNJ 13F-HR 12 Nov 2015, 17:18
Q2 2015 135 $487,237,000 +$64,409,533 -$32,672,521 +$31,737,012 PG, AAPL, BMRN, HD, AGN 13F-HR 23 Jul 2015, 12:57
Q1 2015 135 $464,961,000 +$25,249,129 -$30,606,904 -$5,357,775 PG, AAPL, HD, B108PS, BMRN 13F-HR 12 May 2015, 17:29
Q4 2014 134 $466,991,000 +$78,532,910 -$83,510,067 -$4,977,157 PG, B108PS, AAPL, HD, AEP 13F-HR 09 Feb 2015, 15:36
Q3 2014 134 $449,115,000 +$47,199,189 -$23,738,619 +$23,460,570 B108PS, PG, AAPL, MMP, GILD 13F-HR 13 Nov 2014, 12:59
Q2 2014 137 $424,097,000 +$26,896,037 -$16,036,486 +$10,859,551 B108PS, PG, CVX, MMP, AAPL 13F-HR 11 Aug 2014, 14:45
Q1 2014 137 $411,680,000 +$30,637,659 -$24,257,413 +$6,380,246 B108PS, PG, CVX, XOM, MMP 13F-HR 12 May 2014, 16:58
Q4 2013 145 $400,517,000 $0 $0 $0 PG, B108PS, CVX, XOM, DHR 13F-HR 06 Feb 2014, 16:50