FTB-C000343 / Formula component

MACD Signal Line

MACD Signal Line is an exponential moving average of the MACD line.

Also known asMACD signal

Intermediate Formula defined 1 linked topicPublished

Definitions

In plain terms

It smooths the fast-minus-slow spread over a separate signal period.

Technical

Its seed and first-ready point begin from valid MACD values rather than the original price series.

Scope

The signal line is not a forecast and can differ across initialization conventions.

Formula

Signal line = EMA_signal(MACD line)
LaTeX: G_t=EMA_q(M)_t
SymbolMeaningUnit
MMACD line seriesinput unit
qsignal EMA periodobservations

Output unit: input unit

Examples

  • A governed lesson calculates or identifies MACD Signal Line only after its parameters, state, timing, and edge cases are declared.

Common misconceptions

  • The signal line is not a forecast and can differ across initialization conventions.

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-A01 Important

Evidence and governance

  1. TA-Lib MACD Implementation TA-Lib · first party technical publication

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

    Limits: Provider-specific compatibility behavior and unstable periods must be reconciled before claiming parity.

  2. TA-Lib MACD Implementation TA-Lib · first party technical publication

    Supports: variant distinction

    Limits: Provider-specific compatibility behavior and unstable periods must be reconciled before claiming parity.

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.