FTB-C000509 / Implementation concept

Causal Donchian Breakout Comparison

Causal Donchian Breakout Comparison tests a current finalized observation against a channel boundary that was available earlier.

Also known asprior-channel breakout test

Advanced 1 linked topicPublished

Definitions

In plain terms

Using the prior completed upper or lower channel avoids the impossible strict exceedance created by current-inclusive extrema.

Technical

The rule must freeze compared price field, strict or inclusive inequality, lag, bar finality, and missing warm-up states.

Scope

It defines an event detector, not a complete trading strategy or proof of profitability.

Examples

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

Common misconceptions

  • It defines an event detector, not a complete trading strategy or proof of profitability.

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.