In the volatile market, the fixed investment of funds is often the choice of many investors. In the process of understanding the fixed investment of the fund, we often hear a saying, that is, the "smile curve." So specifically, what is the so-called smile curve? In fact, the net value trend of products suitable for fixed investment often shows such characteristics: after the fixed investment begins, the products first fall and then rise. This trend of falling first and then rising is like a smiling expression, so it is called a smiling curve.

The reason why the smile curve is more suitable for the trend of fixed investment is that more and more funds are invested in the process of decline, and at the same time, because the same investment amount can buy more fund shares at relatively cheap prices, the cost is getting lower and lower. In the process of rising, the fund shares with lower cost accumulated in the early stage began to make profits, so the smile curve is called the most suitable trend for fixed investment.

Choosing a stock fund with a long-term upward trend is expected to harvest one smile curve after another, because stock products are inherently volatile, and many excellent stock products with a long-term upward trend can rise again after each exit, which gives one smile curve after another. This kind of products are very suitable for fixed investment, and the effect of this investment method is particularly prominent in the market environment of bear market or shock city.

Risk disclosure: the market is risky, so the fund investment needs to be cautious. Regular fixed investment is a simple and easy way to guide investors to make long-term investment and average investment cost. However, fixed investment can not avoid the inherent risks of fund investment, can not guarantee investors to obtain income, nor is it an equivalent financial management method to replace savings.