Generally, open index funds can only be purchased and redeemed in the primary market, and the transaction only involves cash and fund shares;

From the perspective of subscription scale, the minimum redemption unit of general index funds is smaller, which is carried out through all consignment agencies, and the minimum redemption unit of ETF is larger.

From the point of view of rates, ETF has a lower rate because it applies for physical redemption.

Generally, open-end funds publish their portfolios quarterly or semi-annually, and publish the net value of the previous day every day.