巴菲特连续减持美国银行，什么信号？

Warren Buffett"s Berkshire Hathaway has continued to sell American Bank shares， reducing its stake by $30.46 billion since July 17th. The减持可能由于估值较高（PE ratio of 14.1x vs historical average of 10x）、避税考虑（potential capital gains tax hike）以及苹果面临市场挑战等因素。同时，巴菲特增加了对安达保险的持仓。