Mark Price Calculation
Mark Price Calculation is the method by which a trading platform determines the fair value of an asset for the purpose of triggering liquidations and calculating unrealized profit or loss. Unlike the last traded price, which can be easily manipulated by small volume trades, the mark price is often a smoothed average or a composite index price.
This helps prevent artificial liquidations caused by momentary price spikes or "wicks" on a single exchange. The calculation typically incorporates funding rates to align the perpetual contract price with the underlying spot price.
By using a robust mark price, protocols ensure that liquidations are based on the true market consensus rather than isolated volatility. This is essential for maintaining trust in the system and preventing unfair liquidations.
It is a critical component of the platform's risk engine, balancing the need for responsiveness with the need for stability.