A stop-loss sits as an order with the broker or exchange and is executed without your involvement. A mental stop is a price level you have decided on and at which you have to click yourself. The difference is not the level but who decides once it is reached: the system, or you in that very moment.
| Criterion | Stop-Loss | Mental stop |
|---|---|---|
| Where it lives | In the order book or on the broker's server | In your head |
| Execution | Automatic, even when you are away from the screen | Manual, only if you are there and click |
| In a gap or on news | Fires, possibly with slippage | Nothing happens until you act |
| Typical risk | Slippage in a fast market | Moving it, sitting it out, not acting at all |
| What the journal shows | Planned and actual exit nearly identical | Actual exit usually deeper than planned |
Normally always. Especially for positions held overnight, through news, and in markets that can gap.
Some experienced traders use a mental stop in very illiquid markets with frequent false breakouts, but with a real emergency stop further away in the system. A mental stop without that protection is not a stop.
Why do so many traders move their mental stop?
Because the loss only becomes real in the moment they would have to click. Loss aversion makes waiting easier than closing. An order in the system takes exactly that decision away from you.
Educational content, not investment or tax advice. Neutrally contrasted, not a recommendation of either approach. Trading leveraged products carries risk of total loss.