Glossary · Prop Firms
Floating PnL
Floating PnL is the unrealized profit or loss on an open position, calculated from the difference between entry price and current market price multiplied by position size. It moves continuously with the market and only becomes a realized change to account balance once the trade is closed.
Why it matters
Floating PnL changes equity in real time, which affects available margin and how close an account sits to a stopout. In prop trading, a floating loss can breach a daily loss limit or drawdown rule the instant it happens intraday, even if the trader never manually closes the position.
Live data
Example
Say a trader holds an open position on a funded account with a daily loss limit set as a percentage of starting balance. Price spikes against the position mid-session, pushing floating PnL sharply negative. If that dip drags floating loss past the account's daily loss limit at any point during the day, the account can breach immediately, even if price later reverses and the trade would have closed in profit. Equity, not just closed balance, is what gets checked against the limit.
Common misconception
Many traders assume only the closed, realized result counts toward risk limits. In reality, most prop firms evaluate floating loss continuously, so a brief spike against an open position can trigger a breach even if the trade eventually recovers. A second point of confusion: floating PnL can stay negative even when price has moved in your favor, because spread and swap or financing charges apply on top of the raw price difference. Without a stop loss in place, an open position also has no automatic ceiling on how far floating loss can run against the account.
Related terms
See also
Use the drawdown visualizer tool to model how a floating loss interacts with an account's daily loss and total drawdown limits before it turns into a breach.
Sources
Risk disclaimer: Trading carries a substantial risk of loss and is not suitable for everyone. Prop-firm evaluations charge fees and most traders do not pass. Nothing here is financial advice; figures can change, so verify current terms with the firm before purchasing.
Next step
See how firms actually apply this.
Compare current account sizes, rules, discounts and funding terms side by side.