FTB-C000513 / Financial concept

Flat Donchian Channel

Flat Donchian Channel occurs when the active highest high and lowest low are equal.

Also known aszero-width Donchian channel

Foundation 1 linked topicPublished

Definitions

In plain terms

All three channel levels coincide and the channel width is a valid zero after full-window readiness.

Technical

The state requires every eligible high and low to share the same price under valid OHLC constraints.

Scope

A flat ready channel is different from missing warm-up output and does not guarantee an imminent breakout.

Examples

  • A reviewer traces Flat Donchian Channel from aligned inputs through its first-ready row and edge cases before accepting a displayed value.

Common misconceptions

  • A flat ready channel is different from missing warm-up output and does not guarantee an imminent breakout.

Concept relationships

Prerequisites

Related

Where this concept is used

Tutorials planned

These catalogued topics use this concept, but their complete build has not shipped yet.

  • D07-F04-A05 Important

Evidence and governance

  1. Donchian Channels TradingView · official platform documentation

    Supports: preferred label, short definition, technical definition

    Limits: Causal lagging, tie ownership, and exact breakout event rules are local implementation boundaries.

Reviewed by
fintech-builder-batch-009
Last reviewed
2026-07-30
Next review
2027-07-30
Record status
published
Written by

Fintech engineer building market-data and financial systems, and the author of every article, glossary record, and reference implementation on The Fintech Builder.