Graham Holdings Portfolio Concentration Analysis: Heavyweights and Sectors
As of June 30, 2026, Graham Holdings' portfolio is characterized by significant concentration in Financial Services and Communication Services sectors.
Warren Buffett's Berkshire Hathaway remains a cornerstone holding for Graham Holdings Co. The investor's largest position as of June 30, 2026, is in Alphabet Inc (GOOG), representing approximately $347 million, or 32.04% of the total portfolio value. This substantial allocation underscores a clear focus on technology and its supporting sectors.
The second largest holding by weight comes from Berkshire Hathaway Inc itself, split between two classes: BRK-A and BRK-B. Together, these holdings constitute an enormous portion of Graham Holdings' portfolio, accounting for 29.18% (BRK-A) plus 22.26% (BRK-B), totaling over $570 million. This represents nearly half the entire portfolio value and highlights Buffett's dual-class voting structure preference.
When examining Graham Holdings' overall sector allocation, Financial Services dominates with a significant weighting of 62.94% across holdings like BRK-A/B and MKL (Markel Group). The remaining allocations are split between Communication Services at 32.94%, led by Alphabet Inc (GOOG), and Technology at just 4.12%, represented primarily by PUBM (Pubmatic Inc).
The portfolio's top holdings reveal a strong emphasis on established, large-cap companies with stable performance records. Berkshire Hathaway Inc (BRK-A/B) is the investor's largest holding overall due to its massive size and Graham Holdings' strategic decision to concentrate heavily within Buffett's conglomerate empire.
Alphabet Inc (GOOG), while slightly smaller than BRK-B, still holds a commanding position at 32.04% allocation. This indicates continued confidence in the tech giant despite a slight reduction of $1.46 million or about 0.15% in shares during this period.
The third largest holding by weight is Markel Group Inc (MKL), which saw an increase of over 8,300 shares representing a significant 15.09% share growth from the previous quarter. This substantial buying activity adds to Graham Holdings' exposure within Financial Services and suggests confidence in this insurer.
In summary, Graham Holdings Co's portfolio as of June 30, 2026 is heavily concentrated with Alphabet Inc (GOOG) and Berkshire Hathaway Inc (BRK-A/B) being the dominant holdings. The allocation to BRK-B has grown significantly due to share increases.