basically impossible. First of all, there are regulations on fund investment, and the proportion of equity funds with the highest risk level investing in stocks should not be higher than 95% of total assets, so no matter what, there will always be some convenient funds in the form of capital preservation investment or current demand; Secondly, the part of the fund that invests in stocks generally has dozens or hundreds of stocks. If it wants to lose out, all the stocks it holds must be destroyed (this is tantamount to the destruction of the earth). It is estimated that when this happens, only holding gold or eating and drinking in kind has practical value, and all paper money is just like paper.