The fund lost 30%, whether it should be cut or not should be judged according to personal investment strategy and market conditions. Generally speaking, if the market is in a long-term upward trend, then short-term losses do not necessarily need to be cut, because the fund may rebound in the future. However, if the market is in a downward trend, or the investment strategy and performance of the fund are not good, then stop loss in time can be considered to avoid greater losses.

Investors are advised to know the investment strategy and performance of the fund, as well as the market trend and trend before making a decision. At the same time, we should also consider personal risk tolerance and investment objectives, and avoid making radical decisions because of emotions. If investors are not sure whether they should cut meat, they can seek professional investment advice or consult the staff of fund companies.