Just realized a lot of people ask me about PnL basics, so let me break this down real quick.

PnL stands for Profit and Loss - honestly, it's simpler than people think. Basically it measures how much money you've made or lost over a specific period. Whether you're trading, investing, or running a business, understanding what is PnL is pretty essential.

There are two types that matter: Realized PnL is your actual locked-in gains or losses from trades you've already closed. That money's real. Then there's Unrealized PnL (some call it Paper PnL) - these are gains or losses on positions you still hold. They fluctuate with market prices, so they're not finalized yet.

The math is straightforward. For trading, your PnL = (Selling Price - Purchase Price) × Quantity - Fees. Let me give you a real example: say you grabbed 1 BTC at $40,000 and sold it at $45,000. Your profit would be $5,000. That's it.

Why should you care? Well, tracking PnL helps you actually understand if you're making money or losing it. It informs your trading decisions, matters for tax reporting, and honestly, it's the only way to know if your strategy is working. For anyone serious about trading or investing, knowing what is PnL isn't optional - it's foundational.

Some people overthink this stuff, but PnL is really just the difference between what you spent and what you made. Keep it simple, track it properly, and you'll have way better clarity on your portfolio performance.