A trailing stop is a stop-loss that follows price. On a long position, every time price makes a new high, the stop moves up to stay a fixed distance below it; when price falls, the stop stays still. It lets winning trades run in a trend while gradually turning open profit into protected profit.
How it works
The trail distance can be set in several ways:
- Fixed amount or percentage, such as $2 or 5% below the highest price since entry.
- Volatility-based, such as 2 × ATR, which widens in volatile markets and tightens in calm ones.
- Structure-based, moved by hand under each new higher swing low, or under a moving average.
Broker-side trailing stops update automatically; manual trailing requires discipline to move the stop only in one direction. When triggered, a trailing stop usually becomes a market order, so slippage can apply.
The key trade-off: a tight trail locks in more profit but gets hit by normal pullbacks; a wide trail survives noise but gives back more at the end of the move.
Example
A trader buys a stock at $60 with a $3 trailing stop, so the initial stop is $57.
| Highest price | Trailing stop |
|---|---|
| $60.00 | $57.00 |
| $64.50 | $61.50 |
| $68.20 | $65.20 |
| $66.00 (pullback) | $65.20 (unchanged) |
Price then drops to $65.20 and the stop triggers. The trader exits with about $5.20 per share of profit, after the trade had shown $8.20 at the high. The $3 given back is the cost of staying in the trend. With a $1 trail, the trader would have been stopped at $63.50 on an earlier minor pullback.
Common mistakes
- Trailing too tight. Ordinary noise ends good trades early.
- Starting the trail too soon. Many traders keep the initial stop until the trade reaches 1R of profit.
- Using the same distance for every asset. A fixed $3 is meaningless across different volatilities.
- Moving a manual trail backwards to “give it room” after a reversal.
Educational content — not financial advice.
Updated