Serious financial crisis: when the financial order fails, the money fund mainly invests in the money market. Once the financial order goes wrong, the money market will be the first area to be affected, so it will affect the money fund.

Huge redemption: Huge redemption refers to the sudden and huge amount of money fund redemption. Once this happens, the bond price will fall, but the money fund needs enough cash to pay for the huge redemption.

So fund managers can only "sell bonds at a loss" at a lower price. Once the selling price is low enough, the money fund may lose money.

Rising yield: A sharp rise in market yield in the short term will lead to a sharp drop in securities prices.

Extended data money fund is an open-end fund that collects idle social funds, is operated by fund managers and kept by fund custodians. It specializes in investing in low-risk money market instruments, which is different from other types of open-end funds. It has the characteristics of high security, high liquidity, stable income and "quasi-savings".

References:

Baidu Encyclopedia-Monetary Fund