What a stop-loss order does and where it can fall short
In general terms, 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 during fast or thin markets. A stop-limit variant adds a price boundary but may not execute at all if the market moves past it. Some brokers also offer trailing stops or guaranteed stops, sometimes for an extra charge. None of these behaviours should be assumed for any broker, including Blackbull, until you have read the current order documentation yourself.
- A triggered stop-loss usually fills at the next available price, not necessarily the trigger price.
- Gaps at market open or around news events can cause fills well beyond the stop level.
- Stop-limit orders trade certainty of price for the possibility of no execution.
- Guaranteed stops, where offered, typically carry conditions or fees set out in broker terms.


