BRK-B · News · 20260913N

Portfolio Concentration in Top Stocks

BERKSHIRE HATHAWAY INC · 2026-09-13 · Importance 32 · Surprise 24

American Express represents nearly 14% of Berkshire Hathaway’s $359 billion investment portfolio, implying an approximate $50 billion position. The holding is Berkshire’s second-largest stock investment. American Express targets affluent customers with high spending power, supporting the strategic rationale for Berkshire’s concentration in the company.

Key facts

• Berkshire Hathaway has nearly 14% of its $359 billion portfolio invested in American Express. source
• Since 1990, Berkshire Hathaway has trailed the S&P 500 by 10 or more percentage points nine times and beaten it the following year in seven of those instances. source
• Berkshire Hathaway's B shares are up about 2% in 2026 as of this writing. source
• The S&P 500 has gained about 11% in 2026 as of this writing, while Berkshire's B shares are up about 2%. source
• $10,000 invested in Apple 10 years ago would be worth roughly $122,400 today (as presented in the context of Berkshire's position). source
• American Express is Berkshire Hathaway's second-biggest holding. source
• Apple is Berkshire Hathaway's single largest stock position. source