Meaning
It reads like legal boilerplate, but it is an execution rule in disguise. Translation: stop orders are not guaranteed to fill at your stop price. In fast or gapping markets, they fill at the first available price.
Why it exists
Stops become market orders when triggered. If there is no liquidity at your stop level, the next available quote becomes your fill. The broker cannot manufacture liquidity that doesn’t exist.
How it hurts
- Slippage can materially increase loss beyond plan.
- Weekend gaps can skip stops entirely.
- Stop distance that is ‘fine’ in calm regimes becomes fragile in spikes.
How to respond
- Size for tail fills, not ideal fills.
- Do not carry oversized positions into known discontinuity windows.
- Use catastrophe planning: if a worst-case gap occurs, you still survive.
Red flag
If your strategy requires stop precision within a few pips, you must avoid regimes where stops behave like blunt market orders.
Notes
What matters
Gap risk is the reason leverage kills accounts. Price doesn’t have to touch every level.
Hard truth: a stop is a survival tool, not a price guarantee.