Equity
Balance plus or minus your current floating P&L — what you'd have if you closed every trade right now.
The 2015 CHF shock destroyed thousands of retail accounts — equity went from positive to negative in seconds as stops gapped through. Many brokers had to forgive the negative balances just to survive.
Related terms
Balance
beginnerThe total cash in your trading account, not counting any open-trade P&L.
Margin
beginnerThe amount of your own money locked up as collateral to open and hold a leveraged position.
Free Margin
beginnerThe portion of your account equity that's NOT being used as margin for open trades — what's available to open new positions.
Margin Call
beginnerThe broker's warning (or automatic closeout) when your account loses too much and can no longer support your open trades.
Drawdown
intermediateThe peak-to-trough drop in your account equity — a measure of how bad your worst losing streak got.
Major Pair
beginnerAny forex pair that includes the US dollar and one other top-tier global currency — the most liquid pairs in the world.