1, index fund, as its name implies, is a fund product with specific indexes (such as Shanghai and Shenzhen 300 Index, S&P 500 Index, Nasdaq 100 Index, Nikkei 225 Index, etc.) as the target. ) as the target index, and take the constituent stocks of the index as the investment object, build a portfolio by buying all or part of the constituent stocks of the index, and track the performance of the target index. Generally speaking, the index fund aims to reduce the tracking error, make the change trend of the portfolio consistent with the underlying index, and thus obtain roughly the same rate of return as the underlying index.

2. The net value of a fund unit is the net asset value of each fund unit, which is equal to the balance of the total assets of the fund minus the total liabilities and then divided by the total number of unit shares issued by the fund. The subscription and redemption of open-end funds are carried out at this price. The transaction price of closed-end funds is the known market price at the time of trading; On the other hand, the unit transaction price of the open-end fund depends on the net asset value of the unit fund, which is unknown at the time of subscription and redemption (but it can be calculated after the market closes on the same day and announced on the next trading day).