Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.
Reported portfolio value by quarter (19 quarters reported)
$804M in Q4 2021 → $1.08B now. Hover for any quarter.
As reported for the quarter ended June 30, 2026. Activity is the change in share count since the prior quarter's filing.
| Holding | % of portfolio | Activity | Shares | Value |
|---|---|---|---|---|
| Alphabet Inc | 32.0% | Trimmed 0.1% | 982,250 | $347M |
| BH Berkshire Hathaway Inc Del | 29.2% | Unchanged | 422 | $316M |
| BH Berkshire Hathaway Inc Del | 22.3% | Unchanged | 481,920 | $241M |
| Markel Group Inc | 11.5% | Added 15% | 63,793 | $125M |
| Pubmatic Inc | 4.1% | Unchanged | 3,398,904 | $44.6M |
| Cable One Inc | 0.9% | Unchanged | 182,439 | $9.69M |
What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.
quarter ended June 30, 2026 · filed August 14, 2026
| Company | Action | Shares changed | Value of change | % of portfolio |
|---|---|---|---|---|
| Markel Group Inc | Added | +8,363 | +$16.3M | 11.5% |
| Alphabet Inc | Trimmed | −1,462 | −$517K | 32.0% |
quarter ended March 31, 2026 · filed May 15, 2026
| Company | Action | Shares changed | Value of change | % of portfolio |
|---|---|---|---|---|
| Alphabet Inc | Trimmed | −151,778 | −$43.5M | 29.2% |
| Pubmatic Inc | Added | +567,442 | +$4.64M | 2.9% |
quarter ended December 31, 2025 · filed February 13, 2026
No position changes this quarter.
quarter ended September 30, 2025 · filed November 14, 2025
| Company | Action | Shares changed | Value of change | % of portfolio |
|---|---|---|---|---|
| Cable One Inc | New | +182,439 | +$32.3M | 3.2% |
| BH Berkshire Hathaway Inc Del | Trimmed | −1,025 | −$515K | 24.3% |
quarter ended June 30, 2025 · filed August 14, 2025
No position changes this quarter.
quarter ended March 31, 2025 · filed May 15, 2025
| Company | Action | Shares changed | Value of change | % of portfolio |
|---|---|---|---|---|
| Pubmatic Inc | Added | +500,000 | +$4.57M | 2.9% |
quarter ended December 31, 2024 · filed February 14, 2025
No position changes this quarter.
quarter ended September 30, 2024 · filed November 14, 2024
| Company | Action | Shares changed | Value of change | % of portfolio |
|---|---|---|---|---|
| Alphabet Inc | Trimmed | −125,000 | −$20.9M | 23.0% |
| Pubmatic Inc | Added | +358,148 | +$5.33M | 4.2% |
Loading...
