Berkshire Hathaway's Class B shares have declined 1.8% year-to-date through the first half of 2026, leaving the Warren Buffett-led conglomerate significantly behind the broader market.
The stock now trails the S&P 500 by 12.4 percentage points, as the benchmark index has climbed 10.7% since the start of the year.
8% and the Nasdaq Composite gaining 1% on the final trading day of June, Berkshire's holdings have failed to capture the momentum.
The performance gap highlights the ongoing divergence between value-heavy portfolios and the growth-oriented rally that has defined US equities in 2026.
While major indices closed the first half on a positive note, with the S&P 500 rising 0.8% and the Nasdaq Composite gaining 1% on the final trading day of June, Berkshire's holdings have failed to capture the momentum.
The technology sector, in particular, has delivered robust returns, outpacing the traditional industrial and financial assets that form the core of Berkshire's portfolio.
CNBC reported that the underperformance persists despite recent gains in Berkshire's stock, which has managed to narrow the gap slightly in recent sessions.