Warren Buffett said this weekend that he will retire as the head of Berkshire Hathaway (BRK.A) at the end of the year, ending a legendary investing career that saw him beat the market year after year and earned him the nickname “Oracle of Omaha.

Billionaire Warren Buffett announced he is stepping down as Berkshire Hathaway's CEO on Saturday during the company's annual shareholder meeting.

Billionaire investor Mark Cuban called Buffett “a legend and my investing hero” in an emailed statement to Observer.