Graham Holdings Co Master Retirement Trust

In its 13F for Q2 2026 (holdings as of June 30, 2026, filed August 14, 2026), Graham Holdings Co Master Retirement Trust reported 2 stock positions worth $734.1 million. Its top holding was Berkshire Hathaway Class A (BRK.A) at 84.6% of the portfolio, followed by Markel (MKL, 15.4%). Its holdings were unchanged from Q1 2026.

Most Recent 13F
Q2 2026
Location
ARLINGTON, VA
CIK
0001912699
Portfolio Value
$734.1M (Q2 2026)
SEC Filing
0001628280-26-057134 ↗ filed Aug 14, 2026

Holdings Value

0$200.0M$400.0M$600.0M$800.0M Q1 2024: $614.2M Q1 2024 Q2 2024: $598.9M Q2 2024 Q3 2024: $664.0M Q3 2024 Q4 2024: $664.6M Q4 2024 Q1 2025: $770.4M Q1 2025 Q2 2025: $720.0M Q2 2025 Q3 2025: $736.1M Q3 2025 Q4 2025: $750.4M Q4 2025 Q1 2026: $706.4M Q1 2026 Q2 2026: $734.1M $734.1M Q2 2026

Holdings 2 stocks · $734.1M
BRK.A Berkshire Hathaway Inc. Class A 84.57% 829 $620.8M No change
MKL Markel Group Inc. 15.43% 58,008 $113.3M No change

Portfolio Sells Q1 2026 → Q2 2026
None this quarter.

Portfolio Buys Q1 2026 → Q2 2026
None this quarter.

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q2 2026 2$734.1MBRK.A, MKL
Q1 2026 2$706.4MBRK.A, MKL
Q4 2025 2$750.4MBRK.A, MKL
Q3 2025 2$736.1MBRK.A, MKL
Q2 2025 2$720.0MBRK.A, MKL
Q1 2025 2$770.4MBRK.A, MKL
Q4 2024 2$664.6MBRK.A, MKL
Q3 2024 2$664.0MBRK.A, MKL
Q2 2024 2$598.9MBRK.A, MKL
Q1 2024 2$614.2MBRK.A, MKL