这位沃伦·巴菲特的顶尖持仓股是否拥有支付领域最宽的护城河？
· finance.yahoo.com
买入并持有具有持久竞争优势的企业，对这位“奥马哈先知”来说一直行之有效。
While the investing philosophy was different earlier in his career, Warren Buffett popularized the concept of an economic moat in recent decades. This character...