Main Street Research LLC
All 13F Filings
- Location
- Sausalito, CA
- Most recent 13F
- Q2 2026
- Holdings value ($000)
- 2,118,491
- Description
- —
- Website
- —
- Founded
- —
- Chairman
- —
- CEO
- —
- All SEC filings
- View on sec.gov
Sector allocation over time (stocks only)
Stacked by quarter. Hover to see detailed sector breakdown for any quarter.
| Quarter | Date Filed | Holdings | Value ($000) | Form Type | Name |
|---|---|---|---|---|---|
| Q2 2026 | 7/29/2026 | 140 | 2,118,491 | 13F-HR | Main Street Research LLC |
| Q1 2026 | 4/30/2026 | 148 | 1,718,528 | 13F-HR | Main Street Research LLC |
| Q4 2025 | 2/9/2026 | 129 | 1,748,176 | 13F-HR | Main Street Research LLC |
| Q3 2025 | 11/13/2025 | 129 | 1,850,823 | 13F-HR | Main Street Research LLC |
| Q2 2025 | 8/5/2025 | 115 | 1,606,494 | 13F-HR | Main Street Research LLC |
| Q2 2014 | 8/11/2014 | 137 | 424,097 | 13F-HR | Main Street Research LLC |
| Q1 2014 | 5/12/2014 | 137 | 411,680 | 13F-HR | Main Street Research LLC |
| Q4 2013 | 2/6/2014 | 145 | 400,517 | 13F-HR | Main Street Research LLC |
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Money flow by instrument (QoQ, ex-options)
| Type | Value ($000) | Share % | Inflow | Outflow | Net |
|---|---|---|---|---|---|
| Stocks | 1.846 M | 87.1% | 396.2 K | 0 | 396.2 K |
| ETFs | 272.4 K | 12.9% | 3.807 K | 0 | 3.807 K |
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Fund Snapshot
Q2 2026
Latest filed
7/29/2026
Total value ($000)
2,118,491
Holdings
140
QoQ value change ($000)
399,963
(23.3%)
Value = total reported 13F value ($000), Holdings = number of positions.
13F Value over time
Holdings count over time
Sector allocation (latest, stocks only)
Methodology:
sector allocation is stocks-only;
instrument flow table is ex-options;
options exposure is shown separately.
Details.