Define the measured move

Retracement tools start with selected swing endpoints. Different time frames or endpoints produce different levels. State the measured range before discussing a ratio so the observation can be reproduced.

A measurement example

For a hypothetical rise from 100 to 120, a 38.2% retracement lies around 112.36. Tools often include 50%, although it is not a Fibonacci ratio. Calculation identifies a location without proving a price response.

Avoid retrospective selection

Choose the range before the outcome instead of moving endpoints until the chart fits. Compare levels with existing structure and a failure scenario. Confluence does not eliminate false breaks or costs.

Vary the endpoints as an exercise

Calculate levels from a shorter and a longer swing on the same chart and compare them. The purpose is to understand input dependence, not to identify a magical set of lines. For an actual study, state the range-selection rule in advance.

Source and reading notes

This is an independently written educational overview based on the ATFX reading linked below. Examples are illustrative, not live quotes or forecasts. It does not reproduce the original article or imply endorsement by its author.