Have you ever heard of PNL in trading? It's a term you see everywhere on crypto platforms, but honestly, many people don't really know what it means.

So here it is, PNL is just the abbreviation for Profit and Loss. Basically, it's your financial result on a trade — how much you've gained or lost. It's a simple concept, but it's THE metric you need to understand if you want to truly track your performance.

How does it work in practice? It's the difference between the price at which you bought an asset and the price at which you sold it. If you buy BTC at $40,000 and sell it at $42,000, your difference is $2,000. But watch out — you need to deduct platform fees. So your actual PNL would be a little less than that.

The formula is straightforward: Sale price minus purchase price, multiplied by the quantity, minus fees. That's it.

Now, there are two types of PNL you need to know. The first is unrealized PNL — when your position is still open and you're just seeing your profit or loss on paper. The second is realized PNL — when you close your position and the profit or loss becomes actual.

Here's an example to make it even clearer: say you buy 0.1 BTC for $4,000. Later, you sell it at $42,000, so you receive $4,200. Before fees, that's +$200. After exchange fees, let's say it's about +$198. That's your realized PNL.

Positive PNL = you played well, the trade was profitable. Negative PNL = oops, you lost on this trade. And sometimes, PNL can be really volatile if prices move quickly.

It's a simple but crucial concept to understand your trading performance. If you want to improve, you need to learn to read and analyze your PNL regularly. It's the thermometer of your portfolio.