A $500 investment in Berkshire Hathaway Class B shares made on December 29, 2015 would now be worth $1,868, reflecting a 274% total return over the past decade. This gain slightly exceeds the S&P 500’s 197% advance over the same period, demonstrating Berkshire’s ability to deliver market-beating performance despite its gargantuan size and the market’s AI-driven leadership of late.

At age 95, Warren Buffett has announced plans to step down as chief executive, closing a six-decade tenure that produced annualized returns in excess of 20% from 1965 through 2025. Investors are bracing for a leadership transition to his long-time deputies while assessing how the company’s culture and capital allocation discipline will evolve without the founder’s direct oversight.

Berkshire’s publicly traded equities holdings have grown to more than $300 billion, making it increasingly challenging for managers to deploy additional capital into new positions without influencing prices. The size constraint has led management to focus on larger opportunities and to rely more heavily on wholly owned businesses and insurance float for incremental growth.

With mega-cap AI and technology names dominating recent market gains, Berkshire’s broader diversification across insurance, railroads, utilities, manufacturing and consumer brands provides investors with a more balanced risk profile. The conglomerate’s 24.85% gross margin on its industrial businesses and fortress balance sheet have helped it weather volatility that has buffeted high-growth, AI-centric equities.