It is not necessary that all close-ended funds have to be listed on stock exchanges. According to SEBI guidelines, every close-ended fund shall be listed in a recognized stock exchange within six months from the closure of its subscription.
But in certain cases, listing of close-ended funds is not necessary if the scheme is of such type that it provides for capital protection or if the fund periodically provides the redemption option to the unit holders with some kind of restriction (exit load). The period of redemption is clearly mentioned in the offer document of the said funds.