Index funds will never be as violent as stocks, and will always rise slowly. Choosing the right time to add positions in the process of decline can greatly reduce the cost, and then wait for the pattern to reverse and wait for the rise until it is profitable.
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One is the steep drop method, which drops to four points off the court in one day. Yes, it's fast enough.
One is the slow decline method, which adds positions according to the proportion of fixed investment floating losses. For each floating loss 10% as the first gear, the warehouse base can be increased by two times, and so on, and the warehouse will be added gradually, but if there is any overlapping, it should not be added, such as-13% ~- 10%.
According to your own financial pressure adjustment, you can also start when the floating loss is 5%, and the multiple of adding positions remains unchanged. Or when the market is in a volatile upward market, it can also start from 5% to avoid the market from adding positions and missing the opportunity to add positions.