If you set 18 as the fixed investment deduction date on 17, then deduct it in advance today. No deduction, not this month, not until next month 18. If yes, I suggest you go to the bank to change the date of deduction. If you change it today, you can deduct it as early as tomorrow, because the stock market has plummeted these days and the net value of the fund is very low. Now is a good time to buy. If you wait until next month, you don't know what the price is.

If the deduction is successful, it will take two days to find out the actual share of your fund.