The fixed investment of the fund is to automatically deduct a certain amount every month to buy the fund on a certain day. Fixed investment mostly stipulates buying rules, not selling rules. After the fixed investment, the monthly deduction will form the fund share, which can be redeemed at any time. Of course, according to the different types of funds and trading channels, the arrival time will be different.

What is certain is that the share formed by the fixed investment of the fund will not limit redemption. Unless the fund itself is closed for redemption.

1.

The subscription and redemption of new funds will be suspended during the closed period.

2.

Due to the large-scale suspension of holding stocks, it is impossible to sell stocks, and there are huge redemptions and short-term suspension of redemptions.

3.

Some funds are open for redemption on a regular basis and cannot be redeemed at ordinary times.

The situation of fixed investment will not encounter the first one, and the third one is relatively rare.

Besides, I don't know if you can take out 300 yuan, because it depends on whether the fund you invest in is risky. If it is risky, it may be gone when it is taken out, which is not enough for 300 yuan.