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 rowsU_t=\max_{i=t-n+1}^{t}H_i| Symbol | Meaning | Unit |
|---|---|---|
H_i | high at row i | price units |
n | Donchian lookback | bars |
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
Where this concept is used
Evidence and governance
- 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