Buffett warns Berkshire Hathaway's long streak of outperforming S&P 500 may end this year

NEW YORK: Berkshire Hathaway may end a long streak of outperforming the S&P 500 this year, chief executive Warren Buffett warned shareholders on Friday, even as he said he was still eagerly hunting for acquisitions to grow the ice-cream-to-insurance conglomerate.

In his annual letter to investors, Buffett opened up with a caution that this year, for the first time, the growth in Berkshire's book value per share may underperform the growth in the S&P 500 when measured over a five-year period.