For investors, the fund's rate of return is equal to the difference between the current fund net value minus the fund net value at the time of purchase, divided by the net value at the time of purchase, and then multiplied by 100%.

That is, the fund return rate = (current net fund value-net fund value at the time of purchase)/net fund value at the time of purchase * 100%.

Index funds, as the name implies, are fund products 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 underlying 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 underlying 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.