Let’s talk about maintenance margin and leverage tiers:
Initial margin is the margin you need to put up to open a position, roughly equal to the position’s notional value divided by the leverage multiplier.
The larger a position’s notional value, the higher its maintenance margin rate. A common reason is that when positions of this size are liquidated, they have a greater impact on the order book, so more buffer needs to be set aside.
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You’re responsible for your own risk. I’m just sharing some thoughts.