FTB-C000498 / Formula component

Keltner Lower Envelope

Keltner Lower Envelope is the modern Keltner basis minus its ATR-scaled envelope distance.

Also known asKC lower

Foundation Formula defined 1 linked topicPublished

Definitions

In plain terms

It is published only when both the EMA center and ATR distance are ready.

Technical

The aligned formula is lower equals basis minus k times ATR, using full-precision recursive states.

Scope

Crossing the envelope does not have one universal trading meaning.

Formula

Keltner lower = EMA basis - multiplier * ATR
LaTeX: L_t=M_t-k\,ATR_t
SymbolMeaningUnit
M_tKeltner EMA basisprice units
krange multiplierratio
ATR_tcurrent Average True Rangeprice units

Output unit: price units

Examples

  • A reviewer traces Keltner Lower Envelope from aligned inputs through its first-ready row and edge cases before accepting a displayed value.

Common misconceptions

  • Crossing the envelope does not have one universal trading meaning.

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-A04 Important

Evidence and governance

  1. Keltner Channels TradingView · official platform documentation

    Supports: preferred label, short definition, technical definition, formula

    Limits: The platform example does not prescribe universal seeds, periods, contact meaning, or predictive performance.

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.