The stop-when-green rule: when quitting early makes sense and when it does not

[Amanhasnoname]

Some scalpers end the day once a profit target is reached. The logic is protecting gains and avoiding the drift from discipline that often follows a good result. Others argue that it cuts good days short and removes the benefit of favorable conditions.

Whether the rule helps depends on the data. Compare the performance of trades taken after reaching the target with those before. If later trades have lower expectancy, the rule saves money. If they are similar, it forgoes profit.

The answer can differ across traders. For someone who tends to overtrade or loosen standards after success, the rule is a safeguard. For someone who maintains discipline, it is an unnecessary limit.

A flexible version continues trading after the target but with reduced size or stricter criteria.

The right design emerges from the personal log: look at the trade quality by the sequence in the day, and by the state of the P&L at the time of entry.

Rules should address demonstrated weaknesses, not generic advice.

What does the log say about trades taken after the daily target is reached?