What Is a Trailing Stop? How to Use Trailing Stop-Loss Orders

By Forex & Brokers DeskUpdated Nov 10, 2026

Definition

A trailing stop is a stop-loss order that follows price at a set distance as a trade moves in your favor, then stays fixed when price turns against you.

Key takeaways

On a long position the stop equals the highest price reached minus the trail distance.
The stop locks in profit only after price moves further than the trail distance in your favor.
A basic trailing stop sends a market order, so gaps or thin liquidity can fill it worse than the stop.
A trailing stop limit controls the fill price but can leave the position open if price moves through.

A trailing stop is a stop-loss order whose stop price follows the market at a set distance while the trade moves in your favor, then stays fixed when the market turns against you. On a long position the stop rises as price makes new highs. On a short position it falls as price makes new lows. If price reverses by the full trailing distance, the stop is triggered and the position is closed. The aim is to protect profit already made on a trade without capping how far a winning move can run.

How a trailing stop works

A regular stop-loss order sits at one fixed price until you move it or it is hit. A trailing stop automates the moving. You choose a distance, and the platform tracks the most favorable price reached since the order was placed:

Long position: stop price = highest price reached − trail distance
Short position: stop price = lowest price reached + trail distance

Every time the market sets a new extreme in your favor, the stop is recalculated. When the market pulls back, the extreme does not change, so neither does the stop. This one-way ratchet is the defining feature: the stop can lock in more profit but never moves away from price.

When the market reaches the stop price, the order is triggered. For a basic trailing stop, triggering sends a market order to close the position. The stop price is therefore the trigger, not a guaranteed exit price. If liquidity is thin, spreads widen, or price gaps past the level (over a weekend in forex, or overnight in stocks), the fill can come in worse than the stop.

Which price the platform tracks matters too. Forex platforms usually use the bid to evaluate a long position’s stop and the ask for a short, so spread widening alone can move price into a tight trailing stop.

Interpreting the trail distance

The trail distance is how much adverse movement you accept from the best price before treating the move as over. It is not the same as risk from entry. Early in a long trade the stop may still sit below entry, so it is still limiting a loss. Only after price has moved further than the trail distance in your favor does the stop cross entry and lock in a profit (before costs and slippage).

Example of a trailing stop

Hypothetical forex example (pips). A trader buys EUR/USD at 1.0850 with a 40-pip trailing stop.

At entry, the stop sits at 1.0810, a 40-pip risk.
Price climbs to 1.0920. The stop moves to 1.0880, now above entry.
Price climbs to 1.0975. The stop moves to 1.0935.
Price pulls back to 1.0950. The high is still 1.0975, so the stop stays at 1.0935.
Price falls to 1.0935. The stop triggers and a market order closes the trade.

Assuming a fill exactly at the stop, the trade gains 85 pips (1.0935 − 1.0850), though it had been 125 pips in profit at the high. The 40 pips given back is the cost of letting the trade run without knowing where the top would be.

Hypothetical stock example (percentage). An investor buys shares at $80 with a 10% trailing stop. The initial stop is $72. When the stock reaches $100, the stop is $90. At $120, it is $108. If the stock then falls through $108, the position is sold at or near that price, a gain of about 35% from entry under perfect execution. Note that a percentage trail widens in currency terms as price rises: 10% was $8 at entry and $12 at $120.

Short side. A trader sells GBP/USD at 1.2700 with a 50-pip trailing stop. The stop starts at 1.2750. If price falls to 1.2600, the stop moves down to 1.2650 and stays there unless price makes a lower low.

Ways to set the trail distance

Choosing the distance is the hard part. Traders use several methods:

Fixed pips or points. A set number of pips (forex) or points (indices, futures) from the best price. Simple, but the same distance can be tight on a volatile pair and loose on a quiet one.
Fixed currency amount. A dollar or other currency amount below the high (long) or above the low (short), common in stock trading.
Percentage. A percentage of the best price reached. It scales with price, which suits stocks and crypto with very different price levels.
Volatility-based (ATR). A multiple of the average true range, for example three times the 14-period ATR below the most recent high. It aims to stay outside normal swings while still catching a genuine trend change, and is popular in trend-following systems.
Moving average. Exit when price closes beyond a chosen moving average, such as the 20- or 50-period average.
Swing levels. Move the stop behind each new higher low in an uptrend (or lower high in a downtrend), treating a break of that level as the exit signal.

Fixed pips, currency amounts and percentages can usually be entered as automated trailing stops. ATR, moving average and swing-level stops are often applied manually or by script, because they are recalculated from indicator values or closing prices rather than tick by tick.

Whatever the method, calculate position size from the initial stop distance so that the first loss stays within your risk budget.

How traders use trailing stops

Riding trends. The main use is to stay in a trending trade as long as it lasts and exit only after a meaningful reversal, cutting losses and letting profits run without picking a target in advance.

Setting exits before entering. The exit rule is decided before the trade, which removes the temptation to hold a reversing trade in hope or to close a winner early out of nervousness.

Initial stop first, trail later. Many traders place a fixed initial stop where the trade idea is invalidated, then switch to a trailing stop once the trade is in profit or the stop can sit at breakeven. Some platforms offer an activation price: the trail only begins when price reaches a chosen level.

Swing trading. Swing traders often prefer fixed targets at prior highs or lows, but when a swing breaks out into a stronger trend, a trail behind each new swing low or high lets them stay in beyond the original target. Higher timeframes need a wider trail, because normal pullbacks are larger.

Reducing screen time. An automated trail adjusts without the trader watching every tick, which matters for anyone who cannot monitor positions throughout the session.

Fixed stop-loss: stays at one price until manually moved. It caps loss on the trade but does not protect profit as price advances.
Trailing stop limit: when triggered, sends a limit order, typically at a set offset from the stop price, instead of a market order. This controls the worst acceptable fill but can leave the position open if price moves through the limit without trading there. A trailing stop prioritizes getting out; a trailing stop limit prioritizes price.
Take-profit order: closes the trade at a fixed favorable price, locking in a known gain but ending participation in any further move. Some traders combine a take-profit at a target with a trailing stop beneath it.
Break-even stop: a one-time move of the stop to the entry price. A trailing stop keeps moving after that point.

Limitations of a trailing stop

Choppy markets. In a range, price swings back and forth through the trail distance, producing repeated small exits before any trend forms.
Premature exits. A trail set too close can be triggered by a volatility spike, a news release or spread widening while the larger trend is still intact.
Giving back gains. A trail set too wide protects the trend but surrenders a large share of open profit at every reversal.
Slippage and gaps. As a market order, a basic trailing stop can fill well beyond the stop price after a gap or during illiquid hours, so it does not cap losses at an exact figure.
Platform mechanics. On some platforms the trailing logic runs in the terminal on your device rather than on the broker’s server, so the stop stops adjusting when the terminal is closed.

FAQs

Is it better for a trailing stop to trail highs or closing prices?

It is a trade-off. An automated trailing stop usually tracks every tick, so a brief spike against you can trigger it. A close-based rule moves the stop and checks for an exit only at the end of each bar, filtering intrabar noise but allowing a larger adverse move before the bar closes. Close-based trailing is generally done manually or with a script.

What does "target profit 10%, trailing stop 2%" mean?

The meaning depends on the platform. On platforms with an activation price, the trailing stop does not start until the trade is 10% in profit, and from then on it exits if price falls 2% from its highest point after activation. Elsewhere the two can be separate orders: a take-profit that closes the trade at +10%, and a 2% trailing stop that may close it earlier if price reverses 2% from its best level first.

The Bottom Line

Trend traders and anyone who cannot watch positions all session can use a trailing stop to protect open profit without picking a target. The trail distance decides the outcome, since a close trail gets hit by normal swings and a wide one gives back large gains. Size the position from the initial stop, and remember that slippage, spreads and platform mechanics can affect the exit.