Warren Buffett's Berkshire Hathaway (BRK.B) boasts a record so good that it's made him one of the world's wealthiest people, with a $150 billion net worth. Since 1965, Berkshire Hathaway has produced a staggering compounded annual return of 19.

Warren Buffett has been mostly mum about tariffs, but finally spoke his mind at Berkshire Hathaway's annual meeting on Saturday. Becky Quick of CNBC said she received more questions about tariffs than any other subject.

Warren Buffett is a smart investor. He's been investing since age 11 (in 1942), and has always been one to pay attention to macroeconomics and the stock market. Read More: Warren Buffett's Top 4