FTB-C000398 / Formula component

Supertrend Basic Lower Band

Supertrend Basic Lower Band is the bar high-low midpoint minus the declared ATR multiplier times ATR.

Also known asbasic lower band

Intermediate Formula defined 1 linked topicPublished

Definitions

In plain terms

It is the unconstrained lower candidate before recursive final-band ratcheting.

Technical

The calculation requires aligned finalized high, low, ATR, multiplier, timestamp, price basis, and readiness.

Scope

It is not always the active or published Supertrend line.

Formula

Basic Lower = HL2 - multiplier*ATR
LaTeX: BL_t=HL2_t-m\,ATR_t
SymbolMeaningUnit
HL2_tcurrent bar high-low midpointprice
mATR multiplierratio
ATR_tcurrent Average True Rangeprice

Output unit: price

Examples

  • A governed lesson calculates or identifies Supertrend Basic Lower Band only after its parameters, state, timing, and edge cases are declared.

Common misconceptions

  • It is not always the active or published Supertrend line.

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-F02-A08 Important

Evidence and governance

  1. Supertrend TradingView · official platform documentation

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

    Limits: ATR smoothing, initialization, equality rules, and sign conventions can vary by platform.

Reviewed by
fintech-builder-batch-007
Last reviewed
2026-07-27
Next review
2027-07-27
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.