Fixed investment refers to investing in a designated open-end fund at a fixed time and with a fixed amount. Every month, decide what fund to buy, when to pay it and how much money to pay, and leave the rest to the fund company.

In this way, we can adopt a long-term investment plan and expect to realize many a mickle makes a mickle. However, such financial management methods will be affected by market fluctuations, and the trend of the fund market will continue to decline. Xiaobai investors who have handled the fixed investment of the fund may start to lose their temper and hesitate to cut their meat and leave.

At this time, we need to know the smile curve of the fund's fixed investment, and the amount of the fund's fixed investment every month is fixed.

When the net value of the fund falls at the market trough, the same amount of fixed investment can buy more fund shares. As long as you stick to it, those who get more shares when the fund's net value rises will get more benefits.

This is the power of the fund's smile curve. When the fixed investment target falls, it helps to spread the cost of holding positions evenly.