It looks like \u201cmy expected profit,\u201d so when it grows, dopamine kicks in. But here\u2019s the problem:<\/p>\n\n\n\n
If you close (sell) a position by trusting Unrealized PnL alone, you can end up taking a loss.<\/strong><\/p>\n\n\n\n Because in many cases, that Unrealized PnL is not calculated based on the price you can actually exit at right now. It is calculated based on Mark Price<\/strong>.<\/p>\n\n\n\n Unrealized PnL is a \u201cfloating\u201d profit\/loss estimate while the position is still open.<\/p>\n\n\n\n But the key detail is this:<\/p>\n\n\n\n Unrealized PnL often reflects the result if you were to close at the Mark Price \u2014 not the real bid\/ask you will hit when you close.<\/strong><\/p>\n\n\n\n So if you\u2019re trading tight ranges (like scalping) where a single tick can flip your PnL from plus to minus, you should be extra careful.<\/p>\n\n\n\n So\u2026 what is Mark Price?<\/p>\n\n\n\n If you look at the order book area, you\u2019ll usually see Mark Price shown as a separate price (often in a lighter color) compared to the last traded price.<\/p>\n\n\n\n Mark Price is not the last traded price.<\/strong><\/p>\n\n\n\n It\u2019s a reference price designed to help prevent unfair liquidations during sudden spikes, manipulation, or abnormal order book movements.<\/p>\n\n\n Mark Price is commonly derived from a combination of:<\/p>\n\n\n\n In short, Mark Price exists so that people don\u2019t get liquidated just because of a temporary \u201cwick\u201d or a manipulated spike.<\/p>\n\n\n\n This is a protection mechanism \u2014 but it also creates a gap between what you \u201csee\u201d and what you can \u201cexecute.\u201d<\/p>\n\n\n\n Here\u2019s the practical point:<\/p>\n\n\n\n When you actually close a position, you don\u2019t close at Mark Price.<\/strong><\/p>\n\n\n\n You close at the market\u2019s executable price:<\/p>\n\n\n\n So if you\u2019re about to close, the most accurate thing to watch is the bid\/ask<\/strong> (or the close preview), not just Unrealized PnL.<\/p>\n\n\n\n Unrealized PnL is fine as a \u201cquick glance\u201d when you\u2019re trading with room \u2014 but it should not be your only decision signal when precision matters.<\/p>\n\n\n\n Even though Mark Price exists to prevent unfair liquidations, you still should not \u201cbarely survive\u201d liquidation zones.<\/p>\n\n\n\n If you\u2019re trading high leverage, isolated margin, or doing sleep trades with aggressive sizing, liquidation is not something you want to flirt with.<\/p>\n\n\n\n Because once it happens, a big chunk of your funds can disappear instantly.<\/p>\n\n\n\n
\n\n\n\n1) What Unrealized PnL Really Means on Bitget<\/h2>\n\n\n\n
![\"Bitget](\"https:\/\/charmmoney.com\/wp-content\/uploads\/2026\/01\/Bitget-Unrealized-PnLPC-1024x187.png\")
<\/figure>\n\n\n\n
\n\n\n\n2) Mark Price: What It Is (And Why Exchanges Use It)<\/h2>\n\n\n\n
![\"Bitget](\"https:\/\/charmmoney.com\/wp-content\/uploads\/2026\/01\/Bitget-orderbook-mark-price.png\")
<\/figure>\n<\/div>\n\n\n
\n\n\n\n3) How Mark Price Is Calculated (In Simple Terms)<\/h2>\n\n\n\n
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\n\n\n\n4) The Price You Actually Exit At: Bid\/Ask Matters<\/h2>\n\n\n\n
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\n\n\n\n5) One More Important Warning: Don\u2019t Play Chicken With Liquidation<\/h2>\n\n\n\n