Main Street Research LLC

Institutional manager (13F) · CIK 1513211

13F holdings · as of 2026-03-31 · top 50 · reported portfolio $1.7B

#	Issuer	Value	Shares
1	NVIDIA CORPORATION	$108M	620,776
2	APPLE INC	$102M	403,578
3	ALPHABET INC	$90M	311,786
4	ISHARES TR	$82M	1,958,627
5	TAIWAN SEMICONDUCTOR MANUFAC	$75M	223,159
6	SPDR SERIES TRUST	$72M	567,479
7	JPMORGAN CHASE & CO	$66M	223,762
8	BROADCOM INC	$66M	212,402
9	MCKESSON CORP	$59M	67,774
10	AMAZON COM INC	$56M	269,193
11	ASML HLDG NV	$55M	41,687
12	CORNING INC	$53M	387,718
13	COSTCO WHOLESALE CORPORATION	$46M	46,139
14	JOHNSON & JOHNSON	$46M	186,882
15	ISHARES INC	$45M	361,874
16	GE VERNOVA INC	$44M	50,692
17	WORLD GOLD TR	$44M	469,451
18	CATERPILLAR INC	$43M	61,110
19	WALMART INC	$43M	344,869
20	CAMECO CORP	$42M	389,077
21	META PLATFORMS INC	$41M	70,962
22	AMPHENOL CORP	$38M	301,043
23	BHP BILLITON LIMITED	$38M	519,212
24	ASTRAZENECA PLC	$38M	190,644
25	MICRON TECHNOLOGY INC	$37M	109,109
26	ROYAL BK CDA	$36M	222,568
27	KEYSIGHT TECHNOLOGIES INC	$32M	112,937
28	MICROSOFT CORP	$25M	67,542
29	PALANTIR TECHNOLOGIES INC	$25M	167,647
30	PROCTER & GAMBLE CO	$22M	151,627
31	BARCLAYS PLC	$18M	850,971
32	FAIR ISAAC CORP	$9M	8,464
33	ISHARES BITCOIN TRUST ETF	$8M	196,085
34	ALPHABET INC	$7M	23,437
35	BERKSHIRE HATHAWAY INC DEL	$6M	11,978
36	PALO ALTO NETWORKS INC	$5M	34,024
37	MCDONALDS CORP	$5M	15,483
38	TESLA INC	$5M	12,337
39	SCHWAB CHARLES CORP	$4M	46,360
40	ARISTA NETWORKS INC	$4M	34,981
41	EXXON MOBIL CORP	$4M	23,924
42	WELLS FARGO & CO	$4M	46,882
43	BERKSHIRE HATHAWAY INC DEL	$4M	5
44	CHEVRON CORPORATION	$3M	16,851
45	AUTODESK INC	$3M	14,403
46	ISHARES TR	$3M	38,583
47	VISA INC	$3M	10,246
48	ELI LILLY & CO	$3M	2,908
49	ISHARES INC	$3M	14,742
50	ABBVIE INC	$2M	10,258

Source: sec_edgar_13f · public regulatory · retrieved 2026-06-29. Public SEC data; no contact information.