Generally speaking, some floor funds can be bought and sold on the same day, such as currency ETF, bond ETF, gold ETF and cross-border ETF. If investors want to buy and sell funds on the same day, they can find the trading time of T+0 funds in the trading software, so that they can buy and sell on the same day, which is very flexible.
Off-exchange funds are generally not allowed to be bought and sold on the same day, so attention should be paid. When buying a fund, it takes time to confirm the share, so most funds need to wait a day or two to redeem, depending on the fund regulations.
When buying a fund, you can choose to buy it on the same day, but only if the fund is profitable. If you operate the fund frequently and lose money every time, it is meaningless to buy the fund like this.
Secondly, short-term holding funds is risky, because short-term fluctuations will be relatively large, so it is generally recommended to hold them for a long time when buying funds. Long-term holding can disperse the fluctuations caused by short-term funds, thus reducing risks, but if you can make money in the short term, you can also hold funds in the short term.