Warren Buffett's Successor, Greg Abel, Has 30% of Berkshire Hathaway's $343 Billion Investment Portfolio Tied Up in 2 Foundational AI Stocks

Greg Abel, who became CEO of Berkshire Hathaway in January 2026, has concentrated 30% of the conglomerate's $343 billion investment portfolio in Alphabet (GOOGL) and Apple (AAPL). The two AI-focused holdings represent a sharp strategic shift under Abel's leadership, replacing the more diversified approach of his predecessor Warren Buffett.

Abel has actively increased Berkshire's position in Alphabet since taking charge while maintaining Apple as a core holding. The combined allocation to these two tech giants—$102.9 billion in current market value—marks one of the most aggressive sector concentrations in Berkshire's history. Abel's rationale centers on both companies' AI integration capabilities and durable competitive moats.

The portfolio tilt reflects a generational change in investment philosophy at BRK.B. Under Buffett, Berkshire historically avoided heavy concentration in technology stocks until the Apple position was built in recent years. Abel has doubled down on that thesis, betting that Alphabet's search dominance and cloud infrastructure, combined with Apple's ecosystem lock-in, will capture disproportionate value from the AI wave.