American Express is one of Buffett's oldest stocks, and since Berkshire Hathaway has been selling Apple and Bank of America, ...

Apple still holds the largest stake in Berkshire's portfolio, which is worth $268 billion, or about 20 percent.

Berkshire Hathaway recently filed its second-quarter 13F form, revealing its stock holdings at the end of June.

Warren Buffett’s net worth makes him 28 times richer than Donald Trump thanks to decades of savvy investing and Berkshire ...