
Berkshire Hathaway lags S&P 500 by largest margin in 2026 amid cautious AI stance and railroad merger delays.
In 2026, Berkshire Hathaway's shares have fallen nearly 11% while the S&P 500 surged over 35%, driven by tech stocks benefiting from AI optimism. Berkshire's conservative approach, with minimal AI exposure and nearly $400 billion cash reserves, contr...

