How stop loss orders work in general
A standard stop loss becomes a market order once the trigger price is reached, which means the fill price can differ from the trigger price when markets move quickly or gap between sessions. This difference is called slippage. Some platforms also offer variations such as trailing stops, which move the trigger level as price moves in your favour, or guaranteed stops, which fix the exit price in exchange for a cost, where offered. Each variation has different behaviour and different terms, and availability differs between brokers and platforms, so none should be assumed for XM without checking.
- A triggered stop loss usually executes at the next available price, not necessarily the trigger price.
- Gaps over weekends or around news events can cause fills notably worse than the stop level.
- Trailing stops and guaranteed stops are separate order types with their own rules and, sometimes, costs.
- Order behaviour can differ between instruments on the same platform.


