It is impossible for the fund to fall out of negative numbers. Theoretically speaking, the fund does not guarantee the principal and interest, thanks to zero. However, in practice, there is basically no possibility of zero loss, because if the fund loses to a certain extent, it will go bankrupt and be distributed to investors according to the fund share after bankruptcy liquidation.

Extended data:

Fund, in English, refers to a certain amount of funds set up for a certain purpose. It mainly includes trust and investment funds, provident funds, insurance funds, retirement funds and funds of various foundations. From the accounting point of view, capital is a narrow concept, which refers to funds with specific purposes and uses. The fund we are talking about mainly refers to the securities investment fund.

Whether fund units can be increased or redeemed can be divided into open-end funds and closed-end funds. Open-end funds are not traded on the market (as the case may be), but are purchased and redeemed by banks, brokers and fund companies, and the fund scale is not fixed; Closed-end funds have a fixed duration and are generally listed and traded on the stock exchange. Investors buy and sell fund shares through the secondary market.

According to different organizational forms, it can be divided into corporate funds and contractual funds. A fund is established by issuing fund shares to establish an investment fund company, which is usually called a corporate fund; The establishment of fund managers, fund custodians and investors through fund contracts is usually called contractual funds. China's securities investment funds are all contractual funds.

According to the different investment risks and returns, it can be divided into growth funds, income funds and balanced funds. According to the different investment objects, it can be divided into four categories: bond funds, stock funds, money funds and hybrid funds.

Open-endfunds (LOF) are called "Listened Open-end Fund" or "open-end funds" in English, "listed open-end funds" in Chinese and * * * mutual funds abroad. In other words, after the issuance of listed open-end funds, investors can purchase and redeem fund shares at designated outlets, or buy and sell funds on exchanges.

Closed-end funds belong to trust funds, which refer to investment funds whose scale has been determined before issuance, fixed within a specified period after issuance and traded in the securities market.

Because closed-end funds are traded by bidding in securities trading, the transaction price is affected by the relationship between market supply and demand, which does not necessarily reflect the fund's net asset value, that is, the transaction price of closed-end funds has a premium and discount phenomenon relative to its net asset value.