Look, if you're into crypto trading, you need to really understand what PNL is. I'm telling you because it's literally the indicator that defines whether your trade was a winner or a loser.

PNL stands for Profit and Loss, basically the profit or loss you made on a trade. It's simple: compare the price you entered at versus the price you exited at, subtract the fees, and that's it. If the number is positive, you won. If it's negative, you lost. That's straightforward.

The formula is very simple: PNL = (Selling Price – Buying Price) × Quantity – Fees. Let me give you a real example. Say you bought 0.1 BTC at $40,000, investing $4,000. Then you sold it at $42,000 and received $4,200. The gross difference is $200, but after exchange fees, you're left with about $198. That’s your positive PNL.

Now, when you trade, you need to differentiate two things. There's Unrealized PNL, which is the gains or losses you have while the position is still open, and Realized PNL, which is what you actually gained or lost once you closed the trade. They are different numbers, and it's important not to confuse them.

There's also ROI, which measures the percentage of profitability, leverage that amplifies both your gains and losses, and margin, which acts as collateral to keep your position open. All of this affects how your PNL moves in trading.

What you see on the charts is pure volatility. A volatile PNL means your gains or losses are jumping all over the place due to price movements. That's why some days your PNL is in the green and the next day it's in the red. It's the game of trading, just that here we're not talking about coffee, but thousands of dollars moving quickly.

The key is to understand that PNL is your financial thermometer. It tells you exactly how you're doing. If you master this concept and combine it with a good position strategy, you'll make better decisions in your trades.