ARMFTrailing stop
A trailing stop is a stop order that is pulled along behind the price in the direction of profit and never moves back. It is a tool for trades whose target is not known in advance. We look at the mechanics, the choice of step and the cases where trailing systematically makes the result of a system worse.
How a trailing stop loss works
A trailing stop is defined by a distance from the current price. When the price goes your way, the stop is pulled up, keeping that distance. When the price goes back, the stop stays where it is — and at some moment it fires. The key property: movement in one direction only, a trailing stop never pulls back.
An example. A buy at 1.0850, a trailing stop of 30 pips. The stop sits at 1.0820. The price reaches 1.0900 — the stop is pulled up to 1.0870. The price reaches 1.0930 — the stop goes to 1.0900. Then the price pulls back: at 1.0900 the position is closed with a profit of 50 pips, although the maximum move was 80 pips. The difference of 30 pips is the fee for the fact that the moment of the reversal is not known in advance.
| An ordinary stop | Trailing stop | |
|---|---|---|
| Level | Set once | Recalculated at every new high |
| The direction of movement | Does not move (or moves by hand) | Only towards profit |
| What it locks in | The maximum loss | Part of the move already covered |
| When it is useful | There is a clear target | The target is unknown, the move may continue |
| The main drawback | It does not let you take more than the target | It always gives part of the move back |
Choosing the step: what you pay for in each case
The trailing step is a compromise between «letting the move develop» and «keeping what has already been earned». There is no universal value, but there is clear logic.
A common mistake. The trailing stop is switched on right after the entry, and it fires before the trade has had a chance to develop at all. It is more practical to set a threshold: the trailing stop is activated once the price has covered at least 1R in your direction, and until then the ordinary stop works at its calculated level.
When trailing makes the result worse
Trailing is not always useful, and there are two classes of systems where it is systematically harmful.
- Systems with a fixed target and a high win rate
- If a strategy is built for a move to a particular level and reaches it in 60 % of cases, trailing will close part of those trades before the target — and lower the average result with the same number of losses.
- Range trading
- In a sideways market the price regularly comes back to the middle of the range. A trailing stop closes the position on every such return, not letting it reach the opposite boundary the trade was opened for.
- Instruments with ragged movement
- If intraday pullbacks are comparable to the size of the move itself, trailing turns into a generator of random exits. It is checked against the ATR and against a histogram of pullbacks inside trends.
Whether trailing helps your particular system can be checked only against the journal: you have to compare the actual results with hypothetical «what it would have been with a fixed target» on the same trades. For that the journal has to store the maximum move of the price in your direction — without it the comparison is impossible.
Three exit schemes on one EUR/USD trade
A comparison only makes sense on concrete numbers. Take a move that covered 80 pips in your direction, pulled back by 30 and then reversed. Entry at 1.0850, stop at 1.0810 — a risk of 40 pips, that is, 1R.
| Exit scheme | What happened | Result |
|---|---|---|
| A fixed target of 2R | The target at 1.0930 was reached before the pullback | +2.0R |
| A trailing stop of 30 pips | The stop was pulled up to 1.0900 and fired on the pullback | +1.25R |
| Break-even after 1R, then a target of 3R | The 3R target was not reached, the close was at break-even | 0R |
None of the three schemes is better in the general case — they are better in different scenarios. The fixed target wins when the move reaches it and turns around. Trailing wins when the move goes beyond the target. Break-even wins when the trade reverses right after a small move in your direction.
How to choose a scheme. From the journal, not from feelings: you need the field «the maximum move of the price in my direction before the close». If in most profitable trades that move noticeably exceeds your target, trailing is justified. If the move is usually a little beyond the target and a reversal follows, a fixed target will give more.
Frequently asked questions
How does a trailing stop differ from moving the stop to break-even?
Break-even is a one-off action: the stop is moved to the entry price and stays there. Trailing is a continuous process: the level is recalculated at every new high. They are often combined: first a move to break-even after 1R, then the trailing stop is switched on.
Does a trailing stop work while the terminal is switched off?
It depends on the implementation. A server-side trailing stop at the broker keeps working with the terminal closed; a trailing stop implemented in the client program does not. That is worth checking in the description of the particular platform: the difference shows up at exactly the moment it matters most.
What trailing step should I choose for intraday trading?
Start from the volatility of the instrument rather than from round numbers: a step of about one ATR of the lower timeframe survives ordinary pullbacks. The value is checked against the history of your own trades, not taken from a general recommendation.
Can a trailing stop be used instead of a take-profit?
Yes, it is one of the two working exit schemes. The difference is that a take locks in a target known in advance, while trailing leaves the upper boundary open at the price of a guaranteed pullback. The choice between them is determined by how moves behave in your system — from the journal, not from a general rule.
How many pips should the trailing stop be on EUR/USD intraday?
You start from the ATR of the lower timeframe: a step of about one ATR survives an ordinary pullback. On the hourly EUR/USD chart that is often 20–40 pips, but the value is checked against your own history rather than taken from a general recommendation.
How does a trailing stop-market differ from a trailing stop-limit?
In the same way ordinary stops do: a market order closes the position at the available price, a limit one may not execute in a fast move. For protecting profit a market order is more reliable — otherwise the position stays open on a reversal.
Does a trailing stop work at weekends and on a gap?
The level sits on the server, so when the market opens the order will fire — but at the first available price. On a gap against the position the actual result will be worse than the trailing level, just as with an ordinary stop.
Can the trailing stop be switched on right after the entry?
Technically yes, in practice that closes the position on the very first pullback. It is more sensible to set a threshold: the trailing stop is activated after 1R has been covered, and until then the ordinary stop works at its calculated level.
How does trailing affect the statistics of a system?
It increases the spread of results: some trades close noticeably above the planned target, some below it. The average R may grow, but the win rate usually falls, because pullbacks close positions before the target is reached.
A trailing stop by ATR or by a fixed number of pips?
By ATR, if the instrument changes its activity during the day or the week: the step adjusts automatically. A fixed number is simpler but has to be revised when the market regime changes — otherwise the trailing stop is too wide in a calm market and too tight in a lively one.
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