The requirement for positive profitability of fixed investment is that the time is long enough, otherwise fixed investment is of little significance. If you limit the fixed investment in the CSI 500 etf two years, no one dare guarantee profit or loss, but time is long enough, the probability of positive profit is still very high.
It is recommended to invest in a triangular capital allocation, design a few index points as a reference, the higher the index gradually reduce the amount of money invested, the lower the index gradually increase the amount of money invested, as long as the time is long enough, the possibility of positive returns is higher.
In particular, now the stock market downturn, the risk of starting fixed investment is not great.