What Is a Worked Example of Trailing Stop?

Direct answer

A worked example of a trailing stop shows how a stop price changes as price moves, and how it can trigger when price reverses enough. Because different platforms can implement details differently, you should treat any single example as a math illustration with explicit assumptions.

Mechanism or definition

A trailing stop is a type of stop-loss order where the stop level “trails” behind the market price by a fixed distance (often measured in pips or points). The key idea is directionality:

• If you are in a long position, the stop level can move up as price rises (staying a fixed distance below the highest observed price).
• If you are in a short position, the stop level can move down as price falls (staying a fixed distance above the lowest observed price).

Assumption for the example: we use a simplified rule: the trailing distance is constant, the stop updates immediately at each new “high” (for long) or “low” (for short), and a trigger occurs when price crosses the stop level. Real trading may differ due to execution timing, quoting, and broker/platform order handling.

Worked example (fully numeric)

Scenario setup

Assume:

1. You hold a long position.
2. Initial entry price is 1.1000.
3. Trailing distance is 0.0020 (for example, 20 pips if 1 pip = 0.0001).
4. The initial stop is placed at entry minus the trailing distance.
5. We ignore spreads, commissions, and slippage in the calculations (limitation discussed later).

From the assumptions:

• Initial stop = 1.1000 − 0.0020 = 1.0980.

Price path and stop updates

Consider a simplified sequence of quoted prices (think of them as successive observations):

• Step A: price reaches 1.1010 (new high)
  • Highest observed price = 1.1010
  • Updated stop = 1.1010 − 0.0020 = 1.0990
• Step B: price reaches 1.1035 (new high)
  • Highest observed price = 1.1035
  • Updated stop = 1.1035 − 0.0020 = 1.1015
• Step C: price reaches 1.1050 (new high)
  • Highest observed price = 1.1050
  • Updated stop = 1.1050 − 0.0020 = 1.1030

Trigger on reversal

Now assume price falls:

• Step D: price drops to 1.1020.

At this point, the current stop is 1.1030. With the simplified rule “trigger when price crosses below the stop,” the trailing stop would trigger because 1.1020 < 1.1030.

What you can conclude from the math

This scenario illustrates:

• The stop level can increase (from 1.0980 → 1.0990 → 1.1015 → 1.1030) as price makes higher highs.
• The stop triggers when price reverses by at least the trailing distance relative to the most recent high.

Limitations and risks

Even with correct arithmetic, several material failure modes exist:

1. Execution timing and updating rules: If your platform updates the stop only at certain intervals or order events, the stop level in your account may differ from the example’s step-by-step idealization.
2. Rapid reversals: If price moves quickly down through the stop, you may still be stopped out, even though the stop “followed” favorable movement.
3. Price gaps and discontinuities: In markets with sudden jumps, the first tradable price after the trigger can be worse than the stop level implied by a smooth calculation.
4. Costs not included in the example: Spreads, commissions, and slippage can affect the effective exit outcome, even if the stop price math is right.
5. Direction rules differ: Some implementations may behave differently when price oscillates near the prior high, or they may lock the trailing level after certain conditions.

Because outcomes vary with market conditions, execution, and jurisdiction, you should verify how your specific platform defines:

• when the “highest/lowest observed price” is updated,
• how trailing distance is measured (pips vs points, rounding rules), and
• how stop triggering is handled.

Verification or next question

To independently verify a trailing stop on your side, redo the same calculations using your assumptions and your platform’s rule set:

1. Identify the trailing distance and the initial stop placement rule.
2. Track the highest (long) or lowest (short) observed price used by the platform.
3. Recalculate the stop after each new extreme.
4. Confirm the trigger condition and the actual executed exit.