Trailing stop mechanics: what exactly do you trail?

Trailing sounds simple; the mechanics are not. A fixed pip trail ignores volatility; a swing-based trail gives back different amounts in different regimes; a moving-average trail lags by design.

Trailing stop mechanics: what exactly do you trail? — pip movement diagram
How a pip moves the exchange rate

Describe your trail:

  • the reference you trail (swing, MA, ATR, fixed pips)
  • how often you update it
  • the regime where your trail underperforms
Trailing stop mechanics: what exactly do you trail? — support and resistance diagram
Price bouncing between support and resistance

The ATR guide gives the volatility-aware version.

Background: Trailing stops: how they move and where they fail

A trailing stop moves with price in your favour and never backwards. Here is how to set the distance, why it can fill at a worse price, and when it does more harm than good.

What is a trailing stop?

A stop-loss that moves with price in the direction of a trade by a set distance, and does not move back against it.

Why does a trailing stop fill at a different price?

Once triggered, it becomes a market order, so the fill depends on the market at that moment. In fast markets or after a gap it can differ from the stop price.

Read the full guide

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