How should a prop firm handle a sudden price spike?
Quick answer
Treat genuine market spikes as part of trading, since traders choose their risk, but investigate spikes that look like feed errors. Publish your policy in advance: genuine moves stand, clearly erroneous prices are reviewed. Encourage traders to use stop losses and sensible position sizes.
Detailed answer
Distinguish two cases:
- Genuine volatility: news, gaps, flash moves confirmed by other sources. Breaches stand.
- Erroneous price: a single bad quote not seen elsewhere. Review affected accounts.
Preventive design:
- Rules such as mandatory stop loss and maximum risk per trade reduce exposure to spikes.
- Lower leverage on volatile instruments.
- Weekend holding restrictions for gap risk.
PropExecutor offers a mandatory stop loss rule (every order must carry one, and it cannot be removed) and maximum risk per trade in its advanced catalogue.
Example
A central bank surprise moves EUR/USD 120 pips in seconds. The move is confirmed across all sources, so breaches caused by it stand, and stops fill at the first available prices. A firm that explains this calmly, with its published policy, rarely faces lasting disputes.
Before it happens
Publish your genuine-move versus erroneous-price policy now.
Keep a record of confirmed spikes and their sources for later disputes.
PropExecutor team · Updated
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