It stands for mark-to-market margin; with respect to buying on margin, it is the minimum amount of equity which an...

It stands for mark-to-market margin; the amount of money (margin) that an investor/ trader must have or maintain, at all...

With respect to buying on margin, it is the minimum amount of equity which an investor must maintain in a...

The amount of money (margin) that an investor/ trader must have or maintain, at all times, in its account to...