Domestic fund sales are really hot. The emergence of tens of billions of funds a few months ago is still a new thing, but now almost every fund can sell tens of billions of copies as long as it is sold indefinitely. The concepts of investment funds and financial management seem to have been deeply rooted in people's hearts. However, when we invest in a fund, what do we know about it? The purpose of investment is to obtain the expected annualized income, which is bound to be accompanied by risks. Are we prepared to bear the loss before investing? Judging from the fact that many people borrow money to buy funds and mortgages, I am afraid not.

Three principles are followed in fund trading:

1, the principle of "unknown price": when investors buy and sell funds, they will be priced according to the net value of the funds on the trading day. The net value of the fund is usually announced the next day, so we don't know what the net value of the fund is at the time of trading. Investors can inquire through the website of the fund company or related newspapers.

2. "First in, first out" principle: the holding period of each fund share is calculated separately at the time of redemption. The application time and details of each transaction of the fund holder are recorded in the registration system and the electronic system of the sales organization. Fund redemption is based on the principle of "first in, first out", that is, the fund bought first is redeemed first. For the corresponding relationship between the holding period of fund shares and the redemption rate, please refer to the prospectus of relevant funds for details.

3. The principle of "amount subscription and share redemption": that is, the subscription is applied according to the amount, and the redemption is applied according to the fund share.