An offsetting change in margin account, made in the span of one trading day, that results in no overall change in the account value is called same-day substitution. When it is made, there is no need for generating a margin call.
An offsetting change in margin account, made in the span of one trading day, that results in no overall change in the account value is called same-day substitution. When it is made, there is no need for generating a margin call.