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Your portfolio screen shows a handful of numbers that all sound similar — balance, available, used, health. Here’s what each one actually means.

Cash / available margin

The part of your balance that isn’t committed to anything. This is what you can use to open new positions or withdraw right now.

Used margin

The money currently posted behind your open positions. It’s still your money, but it’s working: it’s the collateral backing your trades, so you can’t withdraw it or spend it on new positions until the positions holding it are closed. Close a position and its margin — plus or minus that position’s profit or loss — returns to your available balance immediately.

Total balance

Cash plus used margin plus the current unrealized profit or loss on your open positions. It moves with the market while you have positions open — that’s not a glitch, that’s your live account value.

Margin health

Each position shows a margin health indicator: how far the position is from liquidation. Healthy means the market would have to move a long way against you; low health means it wouldn’t. Two ways to improve a position’s health:
  1. Reduce the position — closing part of it lowers the exposure the margin has to support.
  2. Add collateral — on an isolated position, add margin directly to it from the position screen; on a cross position, add funds to your account. Either moves liquidation further away.
For isolated-margin positions, health is per-position: one struggling trade says nothing about the rest of your account. For cross-margin positions, health reflects the shared balance backing all your cross positions. The two modes are explained in Margin.