
Support and resistance: reference zones and invalidation
A level can come from a prior swing, a range boundary or a repeatedly traded area, but those choices are not interchangeable. State how the zone was selected and what would make it obsolete. The width should reflect the price scale, tick size and recent…
- First, define the context and horizon of the analysis.
- Confirm your applications with independent data layers.
- Take into account the quality of feed, spread and real cost of execution.




