What Is a Trailing Stop? How It Works and When to Use It
A trailing stop is a stop-loss that follows the price on its own. It helps you avoid giving back gains you've already made without closing the trade too early. Let's walk through the numbers to see how it works and where people go wrong with it.
How a trailing stop works
Instead of setting a stop price, you set a distance from the current price — as a percentage or in points. As long as the price rises, the stop moves up behind it, keeping that distance. When the price turns around, the stop stays put. If the price reaches it, the position closes.
A worked example
You bought an asset at $100 and set a trailing stop at a distance of 5%.
| Price | Stop level | What happens |
|---|---|---|
| $100 | $95 | Trade opened, stop 5% below |
| $110 | $104.5 | Price rose — the stop moved up; a loss is no longer possible |
| $120 | $114 | The stop moved up again |
| $116 | $114 | Price pulled back — the stop stays put |
| $114 | — | Stop triggered, position closed at a profit |
Without a trailing stop, you would have either closed earlier, at $110, or held the position and watched your profit melt away during the pullback.
How to choose the distance
- Look at the asset's normal price swings. If it routinely moves 4% in a day, a 2% trailing stop will knock you out on noise.
- The longer your time horizon, the wider the trail. Narrow for intraday, wide for medium-term trades.
- Crypto needs more room. It moves more sharply than stocks, so the distance is usually larger.
- Don't tighten the trail out of emotion when the trade is in profit and you're afraid of giving it back.
Common mistakes
- Using a trailing stop instead of a stop-loss. First comes a regular stop from your entry point — it limits the loss if the trade goes against you right away.
- Setting the distance too tight. A normal price fluctuation closes the position, and then the price moves on without you.
- Manually moving it back. Moving the stop away from the price to "give the trade a chance" isn't trailing anymore — it's hoping.
When a trailing stop is useful
When the market is trending and you don't know where the trend will end. A common approach: close part of the position at take-profit and manage the rest with a trailing stop. More on take-profit and stop-loss in take-profit and stop-loss.
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- A trailing stop follows the price and never moves back.
- Start with a regular stop-loss, switch to trailing once the trade is in profit.
- Set the distance wider than normal price noise on your timeframe.
Frequently asked questions
How is a trailing stop different from a regular stop-loss?
A regular stop stays in one place. A trailing stop automatically moves with the price when it goes in your favor, and never moves back.
What distance should I set for a trailing stop?
No less than the asset's normal price swing over your chosen period. Too tight, and a random fluctuation will knock you out; too wide, and you'll give back most of your profit.
Can I set a trailing stop right when I enter a trade?
You can, but many traders first set a regular stop-loss and switch on the trailing stop once the trade is already in profit.
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