自2000年以来，回购一直是美国股市上涨的主要推动力。美国公司净回购了5.5万亿美元的股票，超过任何其他市场参与者。Since 2000, buybacks have been the major contributor to the US stocks rally. US companies have, on net, repurchased back $5.5T of stock, more than any other market participants.