# Order Types The Perpetual Protocol is built upon a virtual automated market maker (vAMM). For this reason, although our advanced order types are functionally similar to those in centralised exchanges, there are a few important differences. First, all of the orders and trades are public. Because of the public nature of blockchains the identity (address) that made the order is also public. Second, all of the orders are effectively executed through all-or-nothing market trades. Unlike central limit order book (CLOB) exchanges, partial fills are not possible. For this reason, it might be worth splitting up larger limit orders into smaller orders at similar prices. On APEX we support the following order types: * Market Orders * Limit Buy and Sell * Stop Orders (Stop Market and Stop Limit) * Trailing Stop Orders (Stop Market and Stop Limit) --- # 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.apex.win/apex-docs/order-types.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.