# Status & Priority Rules

### Status:

At any given time, an order is currently in one of the following states:

* Filled
* Cancelled
* Expired
* Partially Filled
* New
* Rejected
* Suspended (not currently on the order book, for example, parked Stop/Stop Limit)

### Amendments:

After entering an order into the system, you can change the following properties:

* Quantity
* Disclosed Quantity
* Price
* Stop Price
* Expiration Time (GTTs)
* Expiration Date (GTDs)

### Priority Rules:

When matching, the priority order (from highest to lowest) for any given price level is:

* All displayed orders
* Non-displayed parts of Icebergs (via replenishment)
* Fully Hidden Orders
* Pegged Orders

The order is then prioritized according to when it was added to the book or changed. If an order is changed, it loses priority.