# Mark Price Mark Price is closely correlated with the funding rate, and vice versa. We use this Mark Price to prevent unnecessary liquidations for our traders and to deter market manipulation. Since Unrealized PnL is the primary driver of liquidations, it's crucial to guarantee its accurate calculation to prevent unnecessary liquidations. Hence, Mark Price is used for calculating unrealized PnL. The mark price is a composite price derived from a basket of prices sourced from various major CEX exchanges, weighted according to their respective trading volumes. Additionally, to prevent market spikes, there is a moving average price strategy in place to protect users. **Note:** Shield Mode does not have an order book, and thus Mark Price is equal to Last Price. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.asterdex.com/trading/shield-mode/mark-price.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.