The fund fell on Friday because the fund mainly invested in a basket of stocks, and the rise and fall of the fund was determined by the stocks invested. The stock market is generally called Black Friday, and the probability of the stock market falling is relatively high. Therefore, investors should pay attention to the uncertainty of fund ups and downs and the possibility of Friday's rise.

The high probability of Friday's stock market decline is that there may be significant positive or negative news over the weekend, which will lead to increased uncertainty in the follow-up market. Many investors will choose short positions on Friday to avoid risks, which will lead to the stock price falling in the case of selling a large number of orders. In addition, many investment institutions will close their positions for a week on Friday, and some institutions will take profits, resulting in the stock price falling with the massive selling of institutions.