Filed: 7/29/2026ACC: 0001420506-26-001335
📋 What this filing means
MAIN STREET RESEARCH LLC filed this quarterly 13F‑HR report disclosing 140 equity positions with a total reported market value of $2.12B. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
140
Positions
$2.12B
Total AUM (reported)
11.80M
Total Shares
Allocation by class
COM$1.28B60.5%
SPONSORED ADS$154.26M7.3%
CAP STK CL A$113.27M5.3%
CL A$101.42M4.8%
ST STR SP BIOT$91.27M4.3%
INTERNATIONAL SL$87.76M4.1%
N Y REGISTRY SHS$84.34M4.0%
Portfolio Concentration
Top 3$368.98M17.4%
4–10$667.17M31.5%
11–25$779.52M36.8%
Rest$302.81M14.3%
Top 3 weight
17.4%
Top 10 weight
48.9%
Voting Authority Distribution
Total shares with voting rights: 11.80M
Sole
Full voting authority
11.80M
shares
% of voting shares100.0%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
0.00
shares
% of voting shares0.0%
Investment Discretion (by position count)
Sole140
Shared0
Other0
Dominant voting typeSole · 100.0% of voting shares
Institutional Holdings140
Rows:
NVIDIA CORPORATION
SOLEShares630.05K
TypeSH
Market value$126.07M
5.95%
Sole
630.05K
Shared
0.00
None
0.00
MICRON TECHNOLOGY INC
SOLEShares108.64K
TypeSH
Market value$125.40M
5.92%
Sole
108.64K
Shared
0.00
None
0.00
APPLE INC
SOLEShares406.13K
TypeSH
Market value$117.52M
5.55%
Sole
406.13K
Shared
0.00
None
0.00
ALPHABET INC
SOLEShares316.95K
TypeSH
Market value$113.27M
5.35%
Sole
316.95K
Shared
0.00
None
0.00
TAIWAN SEMICONDUCTOR MANUFAC
SOLEShares228.43K
TypeSH
Market value$109.09M
5.15%
Sole
228.43K
Shared
0.00
None
0.00
CORNING INC
SOLEShares394.06K
TypeSH
Market value$100.65M
4.75%
Sole
394.06K
Shared
0.00
None
0.00
SPDR SERIES TRUST
SOLEShares576.75K
TypeSH
Market value$91.27M
4.31%
Sole
576.75K
Shared
0.00
None
0.00
ISHARES TR
SOLEShares2.03M
TypeSH
Market value$87.76M
4.14%
Sole
2.03M
Shared
0.00
None
0.00
ASML HLDG NV
SOLEShares42.40K
TypeSH
Market value$84.34M
3.98%
Sole
42.40K
Shared
0.00
None
0.00
BROADCOM INC
SOLEShares213.84K
TypeSH
Market value$80.78M
3.81%
Sole
213.84K
Shared
0.00
None
0.00
JPMORGAN CHASE & CO
SOLEShares226.30K
TypeSH
Market value$74.07M
3.50%
Sole
226.30K
Shared
0.00
None
0.00
ISHARES INC
SOLEShares360.87K
TypeSH
Market value$72.86M
3.44%
Sole
360.87K
Shared
0.00
None
0.00
CATERPILLAR INC
SOLEShares61.76K
TypeSH
Market value$65.77M
3.10%
Sole
61.76K
Shared
0.00
None
0.00
AMAZON COM INC
SOLEShares274.74K
TypeSH
Market value$65.48M
3.09%
Sole
274.74K
Shared
0.00
None
0.00
GE VERNOVA INC
SOLEShares50.80K
TypeSH
Market value$59.69M
2.82%
Sole
50.80K
Shared
0.00
None
0.00
AMPHENOL CORP
SOLEShares308.72K
TypeSH
Market value$54.43M
2.57%
Sole
308.72K
Shared
0.00
None
0.00
JOHNSON & JOHNSON
SOLEShares188.64K
TypeSH
Market value$47.91M
2.26%
Sole
188.64K
Shared
0.00
None
0.00
ROYAL BK CDA
SOLEShares227.14K
TypeSH
Market value$47.01M
2.22%
Sole
227.14K
Shared
0.00
None
0.00
COSTCO WHOLESALE CORPORATION
SOLEShares47.50K
TypeSH
Market value$44.43M
2.10%
Sole
47.50K
Shared
0.00
None
0.00
BHP BILLITON LIMITED
SOLEShares528.05K
TypeSH
Market value$43.99M
2.08%
Sole
528.05K
Shared
0.00
None
0.00
BARCLAYS PLC
SOLEShares1.62M
TypeSH
Market value$43.55M
2.06%
Sole
1.62M
Shared
0.00
None
0.00
META PLATFORMS INC
SOLEShares72.19K
TypeSH
Market value$40.66M
1.92%
Sole
72.19K
Shared
0.00
None
0.00
KEYSIGHT TECHNOLOGIES INC
SOLEShares115.11K
TypeSH
Market value$40.30M
1.90%
Sole
115.11K
Shared
0.00
None
0.00
CAMECO CORP
SOLEShares391.53K
TypeSH
Market value$39.88M
1.88%
Sole
391.53K
Shared
0.00
None
0.00
WALMART INC
SOLEShares348.65K
TypeSH
Market value$39.49M
1.86%
Sole
348.65K
Shared
0.00
None
0.00
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
NVIDIA CORPORATIONSOLE | COM | 630.05K | SH | $126.07M 5.95% | 630.05K | 0.00 | 0.00 |
MICRON TECHNOLOGY INCSOLE | COM | 108.64K | SH | $125.40M 5.92% | 108.64K | 0.00 | 0.00 |
APPLE INCSOLE | COM | 406.13K | SH | $117.52M 5.55% | 406.13K | 0.00 | 0.00 |
ALPHABET INCSOLE | CAP STK CL A | 316.95K | SH | $113.27M 5.35% | 316.95K | 0.00 | 0.00 |
TAIWAN SEMICONDUCTOR MANUFACSOLE | SPONSORED ADS | 228.43K | SH | $109.09M 5.15% | 228.43K | 0.00 | 0.00 |
CORNING INCSOLE | COM | 394.06K | SH | $100.65M 4.75% | 394.06K | 0.00 | 0.00 |
SPDR SERIES TRUSTSOLE | ST STR SP BIOT | 576.75K | SH | $91.27M 4.31% | 576.75K | 0.00 | 0.00 |
ISHARES TRSOLE | INTERNATIONAL SL | 2.03M | SH | $87.76M 4.14% | 2.03M | 0.00 | 0.00 |
ASML HLDG NVSOLE | N Y REGISTRY SHS | 42.40K | SH | $84.34M 3.98% | 42.40K | 0.00 | 0.00 |
BROADCOM INCSOLE | COM | 213.84K | SH | $80.78M 3.81% | 213.84K | 0.00 | 0.00 |
JPMORGAN CHASE & COSOLE | COM | 226.30K | SH | $74.07M 3.50% | 226.30K | 0.00 | 0.00 |
ISHARES INCSOLE | MSCI STH KOR ETF | 360.87K | SH | $72.86M 3.44% | 360.87K | 0.00 | 0.00 |
CATERPILLAR INCSOLE | COM | 61.76K | SH | $65.77M 3.10% | 61.76K | 0.00 | 0.00 |
AMAZON COM INCSOLE | COM | 274.74K | SH | $65.48M 3.09% | 274.74K | 0.00 | 0.00 |
GE VERNOVA INCSOLE | COM | 50.80K | SH | $59.69M 2.82% | 50.80K | 0.00 | 0.00 |
AMPHENOL CORPSOLE | CL A | 308.72K | SH | $54.43M 2.57% | 308.72K | 0.00 | 0.00 |
JOHNSON & JOHNSONSOLE | COM | 188.64K | SH | $47.91M 2.26% | 188.64K | 0.00 | 0.00 |
ROYAL BK CDASOLE | COM | 227.14K | SH | $47.01M 2.22% | 227.14K | 0.00 | 0.00 |
COSTCO WHOLESALE CORPORATIONSOLE | COM | 47.50K | SH | $44.43M 2.10% | 47.50K | 0.00 | 0.00 |
BHP BILLITON LIMITEDSOLE | SPONSORED ADS | 528.05K | SH | $43.99M 2.08% | 528.05K | 0.00 | 0.00 |
BARCLAYS PLCSOLE | ADR | 1.62M | SH | $43.55M 2.06% | 1.62M | 0.00 | 0.00 |
META PLATFORMS INCSOLE | CL A | 72.19K | SH | $40.66M 1.92% | 72.19K | 0.00 | 0.00 |
KEYSIGHT TECHNOLOGIES INCSOLE | COM | 115.11K | SH | $40.30M 1.90% | 115.11K | 0.00 | 0.00 |
CAMECO CORPSOLE | COM | 391.53K | SH | $39.88M 1.88% | 391.53K | 0.00 | 0.00 |
WALMART INCSOLE | COM | 348.65K | SH | $39.49M 1.86% | 348.65K | 0.00 | 0.00 |
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