Warren Buffett and Berkshire Hathaway Have 60% of Their Portfolio in These 4 Stocks. Are They Buys Right Now?

American Express (Amex) has built its business and brand on exclusivity and premium service, attracting affluent customers with its perks and reputation for reliability.In its fiscal third quarter (ended June 28), Apple's total revenue, iPhone revenue, and earnings per share (EPS) reached record highs for the period, and its services revenue set a new all-time high. Despite its current underwhelming performance, Apple remains a buy.That said, Apple is still the king of consumer tech hardware, and it has the ...