FTB-C000503 / Formula component

Donchian Upper Channel

Donchian Upper Channel is the maximum high inside the active lookback window.

Also known asDonchian upperrolling highest high

Foundation Formula defined 1 linked topicPublished

Definitions

In plain terms

A new higher high raises it immediately, while an old high can hold it until its final owner expires.

Technical

The D07 contract includes the current high and publishes only after n valid rows form a complete window.

Scope

The current-inclusive upper boundary cannot be strictly below the current high.

Formula

Donchian upper = maximum high in trailing n rows
LaTeX: U_t=\max_{i=t-n+1}^{t}H_i
SymbolMeaningUnit
H_ihigh at row iprice units
nDonchian lookbackbars

Output unit: price units

Examples

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

Common misconceptions

  • The current-inclusive upper boundary cannot be strictly below the current high.

Concept relationships

Prerequisites

Related

Required by

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, formula

    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.