Mark-to-Market P/L

Mark-to-market P/L is the profit or loss on your account that is calculated by valuing your open positions at the current market price. This is the most accurate way to see how you are performing right now.

It is the number that the exchange uses to determine your margin levels. Unlike realized P/L, which is the money you actually made or lost, the mark-to-market P/L shows you where you stand at this exact moment in the market.

As a trader, you should look at this figure regularly to see how your account equity is changing. It is a reflection of your decisions and the market's response.

It can be a very useful tool for self-evaluation. Don't get too attached to it, as it will change as the market moves, but use it as a guide to your overall success.

It is a vital part of the daily trading routine and provides the most immediate feedback on how your strategy is working in the real world.