Same-Day Substitution
An offsetting change in a margin account, made over the trading day, that results in no overall change in the value of the account. When a same-day substitution is made, a margin call is not generated.
Investopedia Commentary
A same-day substitution happens when a rise in the market value of one margin security is offset by an equal decline in another.
Related Links
Margin Trading Tutorial
See also: Initial Margin, Leverage, Maintenance Margin, Margin, Margin Account, Margin Call, Market Value, Minimum Margin, Offset
Also spelled: Same Day Substitution, Sameday substitution
same-day substitution