本期 13F-HR 中的全部持仓，以及相对上季度的变化。
13F 持仓，最新季度
来源SEC EDGAR13F-HR
Graham Holdings Co Master Retirement Trust (CIK 1912699) reported $734,087 across 2 reported positions in its SEC 13F filing for 2026-06-30. Largest positions: BRK/A ($620,797, 84.57%), MKL ($113,290, 15.43%). Source: SEC Form 13F.
| Rank | Ticker | Company | Value | % Portfolio | Shares | Action |
|---|---|---|---|---|---|---|
| 1 | BRK/A | BERKSHIRE HATHAWAY INC DEL | $620,797 | 84.57% | 829 | Hold |
| 2 | MKL | MARKEL GROUP INC | $113,290 | 15.43% | 58,008 | Hold |
来源：SEC 13F 申报文件 · 截至 2026-06-30