Main Street Research LLC
Main Street Research LLC reported 140 positions worth $2.12B as of June 30, 2026 (13F filed July 29, 2026). Largest holding: NVDA (6.0%).
| # | Symbol | Company | Type | Value ↓ | % Port. | Shares | 1Y | YTD |
|---|---|---|---|---|---|---|---|---|
| ▸ 1 | NVDA | SH | $126.1M | 5.95% | 630,053 | — | — | |
| ▸ 2 | MU | SH | $125.4M | 5.92% | 108,636 | — | — | |
| ▸ 3 | AAPL | SH | $117.5M | 5.55% | 406,129 | — | — | |
| ▸ 4 | GOOGL | SH | $113.3M | 5.35% | 316,947 | — | — | |
| ▸ 5 | TSM | SH | $109.1M | 5.15% | 228,429 | — | — | |
| ▸ 6 | GLW | SH | $100.7M | 4.75% | 394,058 | — | — | |
| ▸ 7 | XBI | SH | $91.3M | 4.31% | 576,754 | — | — | |
| ▸ 8 | ISCF | SH | $87.8M | 4.14% | 2,027,356 | — | — | |
| ▸ 9 | ASML | SH | $84.3M | 3.98% | 42,396 | — | — | |
| ▸ 10 | AVGO | SH | $80.8M | 3.81% | 213,841 | — | — |
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Frequently Asked Questions
What stocks does Main Street Research LLC hold as of Q2 2026?
Main Street Research LLC reported 140 positions worth $2.12B in its Q2 2026 13F filing. Largest positions: NVDA (6.0%), MU (5.9%), AAPL (5.5%), GOOGL (5.3%) and TSM (5.1%).
What did Main Street Research LLC buy in Q2 2026?
No previous quarter is available yet; the comparison appears with the next filing.
What did Main Street Research LLC sell in Q2 2026?
No previous quarter is available yet.
13F data shows quarter-end positions, is delayed by up to 45 days and covers only long positions in US-listed securities; short positions, most derivatives and non-US assets are not reported.