feature-f4-limit-open-exit

To automatically sell a stock when the limit-up board opens, enable the F4 exit trigger to detect when the best ask is no longer at the limit-up price and immediately issue a market sell order for your held position.

An F4 limit-up break exit strategy is a risk control mechanism that monitors active holding periods and executes a market sell order when a stock's limit-up status breaks, aiming to reduce drawdowns from deteriorating momentum.

You configure exit conditions by enabling the f4_enabled setting in your stock order engine, which activates a guard-based sell requirement to check position quantity and non-limit-up status before triggering a market sell.

Known risks of an automated market exit when the limit-up opens include cross-day mis-sell errors and washouts from open-then-reclose price movements, which can be mitigated by extending tolerance settings to avoid false exits.

Yes, the F4 exit strategy fits momentum trading backtesting tests by applying guard-based sell requirements to engine ticks during active holding periods to evaluate drawdown reductions against historical limit-up break scenarios.