What Is the Danger of Using the ‘Last Traded Price’ for Liquidation?
The Last Traded Price (LTP) is highly susceptible to short-term market volatility, low liquidity, and malicious price manipulation, such as 'wicks' or 'spoofing'. If the LTP were used for liquidation, a large, single trade could temporarily move the price, triggering a wave of unfair liquidations.
The Mark Price, being an average, is used instead to provide a more stable and reliable liquidation trigger, protecting traders.