封闭式基金和开放式基金共同构成了证券投资基金的两种基本运作方式。它们的主要区别是 :①封闭式基金有固定的存续期 ,在存续期内基金规模固定 ,换言之 ,就是投资者无法将买来的基金单位再卖给基金管理人。而开放式基金规模不固定 ,基金单位可以随时向投资者出售 ,也可应投资 Closed-end funds and open-end funds together constitute the securities investment fund’s two basic modes of operation. Their main difference is: ① closed-end funds have a fixed duration, the duration of the fund size is fixed, in other words, investors can not be purchased units sold to fund managers. The size of open-end funds is not fixed, the unit can be sold to investors at any time, but also should be invested