As long as the fund valuation has a downward trend, buy the same amount every time. Advantages: suitable for long-term downward trend, fixed investment, and low liquidity requirements. Disadvantages: Can't make full use of the valley and share the cost.

2. Equal difference purchase method

There is a downward trend in valuation. No matter how big the decline is, every time I buy it, I buy a fixed value more than the last time. Advantages: to a certain extent, the valley point is used to better share the purchase cost of the fund. Disadvantages: the demand for working capital is general, and the funds for jiacang are wasted under the condition of small decline.

3. Equal proportion purchase method

The valuation showed a continuous downward trend, and the amount of each purchase doubled from the previous one. Advantages: when the decline is getting bigger and bigger, you can make good use of the valley points. Disadvantages: It requires high liquidity, and when it falls for a long time, it will cause liquidity tension or even no warehouse at the lowest point.

Extended data:

The share confirmation date of fund subscription is the time when you can start to see the profit and loss of the fund and enjoy the income of the fund. The most common day is T+ 1, where t represents the current trading day and T+ 1 represents the next trading day. If you see that the confirmation time of a fund's share is T+ 1, that is, if you buy on the same day, then you will confirm the share on the second trading day and start to participate in the fund's income distribution.

It should be noted that you must buy before the stock market closes, that is, before 3 pm, in order to be considered a T-day purchase. Those bought after 3: 00 p.m. shall be regarded as the purchase application for the next trading day. If there is a weekend or holiday, it will also be postponed to the next trading day.