The daily capital increase or decrease is the capital increase or decrease of this trading day relative to the previous trading day. Generally speaking, the daily increase or decrease of domestic funds does not exceed 10%. Price fluctuation (%) = (current price-closing price of the last trading day)/closing price of the last trading day * 100%. Matters needing attention in purchasing funds: 1. Measure funds by price. If the price of a fund is high, it may be because the fund has strong experience and investment ability. If the fund price is low, it may be because the manager made an investment mistake. Regardless of price, it has nothing to do with risk. 2. Fund investment should be appropriate. It is best to follow the principle of diversification in investment and financial management. Generally, it is enough to invest in 3~4 funds, which is convenient for us to manage and spread the risks. 3. Don't choose a new fund at will. The investment cost of the new fund will be higher at first, and the old fund has experienced the test of the market. The investment ability of the general fund managers is good, but there are too many uncertainties in the new fund, so we should carefully choose the newly issued fund before deciding. 4. Funds are not suitable for short-term investment. Short-term investment funds can't get much income, and they have to pay a lot of miscellaneous fees first. If users buy and redeem frequently, it will consume a certain expected annualized income and easily cause losses.