指数基金在西方非常普遍。西方主要国家中很大一部分机构投资者的资金都实行指数化,或使它密切跟踪指数。举例来说,美国养老金市场总资产中约35%被指数化。在英国,这个数字大约为25%。而在15年前,这两个国家指数化的比例大约只有10%和2%。一些成长很快的零售共同基金也是指数基金。比如美国的范格尔指数基金是去年美国成长最快的零售共同基金,现在它已经成为全美最大的共同基金之一。 Index funds are very common in the West. A large proportion of the western major countries institutional investors are indexed funds, or make it closely track the index. For example, about 35% of the total assets in the U.S. pension market are indexed. In the UK, this figure is about 25%. And 15 years ago, the two countries indexed only about 10% and 2%. Some fast-growing retail mutual funds are also index funds. For example, the Vankeger index fund in the United States, the fastest growing retail mutual fund in the United States last year, has now become one of the largest mutual funds in the United States.