Warren Buffett told investors on Saturday the Berkshire Hathaway board has identified his successor, easing some shareholder concern about the future of the company once the famed 81-year-old investor

Warren Buffett said his Berkshire Hathaway has accumulated a 5.5 per cent stake in IBM, the billionaire investor's biggest bet in the technology field he has historically shunned.

Buffett, in a CNBC