# Pre-Markets When Pacifica lists pre-markets that are not on other major exchanges, the oracle references Pacifica's mark price instead of external sources.\ \ An EMA is also applied to prevent oracle manipulation. This, combined with Pacifica's price band mechanic (+-30% of mark price) prevents extreme manipulation of pre-market perps.\ \ Once other major venues begin listing the same market, their pricing will be added to Pacifica's oracle reference in order to further strengthen its robustness.\ \ Additionally, Pacifica exercise strict open interest caps in pre-market pairs to prevent abnormal trading activity and market manipulation. --- # 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://pacifica.gitbook.io/docs/trading-on-pacifica/contract-specifications/pre-markets.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.