> For the complete documentation index, see [llms.txt](https://docs.xpressprotocol.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.xpressprotocol.com/trading/order-types.md).

# Order Types

**Order Types:**

* **Market:** An order that executes immediately at the current market price.
* **Limit:** An order that executes at the selected limit price or better.

**Order Options:**

* **Post Only (ALO):** An order that is added to the order book but doesn’t execute immediately. It is only executed as a resting order.
* **Immediate or Cancel (IOC):** An order that will be canceled if it is not immediately filled.