這檔華倫·巴菲特的核心持股是否擁有支付領域最強大的經濟護城河？
· finance.yahoo.com
買入並持有具備持久競爭優勢的企業，對這位「奧馬哈先知」來說成效斐然。
While the investing philosophy was different earlier in his career, Warren Buffett popularized the concept of an economic moat in recent decades. This character...