FTB-C000273 / Financial concept

Sector Breadth

Sector Breadth describes market participation after securities are grouped by a governed sector classification.

Also known asbreadth by sector

Intermediate 1 linked topicPublished

Definitions

In plain terms

It can measure participation inside each sector or compare directional sector outcomes across the market.

Technical

A specification freezes taxonomy, point-in-time members, security-level signal, aggregation, weighting, cutoff, and missing groups.

Scope

It is not one fixed indicator and should not mix taxonomy versions silently.

Examples

  • A Fintech Builder lesson can compute or identify Sector Breadth only after declaring its inputs, timing, and edge-case rules.

Common misconceptions

  • It is not one fixed indicator and should not mix taxonomy versions silently.

Concept relationships

Prerequisites

Broader concepts

Related

Where this concept is used

Evidence and governance

  1. Business Cycle Indicators: Diffusion Indexes The Conference Board · first party methodology

    Supports: preferred label, short definition, technical definition

    Limits: Applying the general diffusion construction to sectors or factor groups is a declared Fintech Builder adaptation.

Reviewed by
fintech-builder-batch-005
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.