I've been playing around with Zorro for a few months now, and there is one thing that still surprises me to this day:
When investments are successful and equity grows a lot, Zorro allows the user to buy assets of value beyond the available cash balance.
A margin call only happens when Equity curve meets Margin, but not when Margin meets Balance.
My question is:
Is this a normal practice allowed by the brokers?
Let's say, could I try to buy on equity instead of balance with e.g. IB and not get a margin call?