Meaning
This clause looks boring until it becomes the only thing that matters. Translation: the broker may reject, re-quote, or re-price orders when the market is moving fast or when liquidity is thin.
Why it exists
Some execution models allow ‘last look’ or risk checks to prevent filling you at a stale price. In stressed conditions, the broker prioritizes staying solvent over giving perfect fills.
How it hurts
- Asymmetric slippage (worse fills more common than better fills).
- Missed exits in fast moves.
- Partial fills creating unexpected exposure.
How to respond
- Trade smaller in fast tape. Size is the only universal adapter.
- Avoid strategies that require tick-perfect entries/exits around releases.
- Log rejects and re-quotes; if persistent outside news windows, reconsider venue fit.
Red flag
- High rejection frequency during normal conditions.
- Rejections are not reported clearly (no logs, no reason codes).
- The broker markets ‘tight spreads’ but hides frequent rejects.
Notes
Last look can be legitimate. The question is how often it happens and whether it’s symmetric.
A clean broker will have clear reporting and consistent behavior across conditions.
Execution rule: if you feel urgency, reduce size. Urgency is expensive.