A fund callback is a fund decline, also called a fund retracement. The maximum withdrawal rate is one of the key indicators that investors need to pay attention to when choosing funds. Generally speaking, callback is a normal phenomenon, and investment authors need not worry too much.

Maximum withdrawal rate: used to describe the worst situation that may occur after purchasing a product.

Mbth callback refers to the phenomenon that in the upward trend of prices, prices temporarily fall because they rise too fast and are suppressed by sellers. The callback range is less than the increase range, and the upward trend will resume after the callback.