FTB-C000153 / Algorithm

Index Rebalancing

Index rebalancing changes constituent quantities, factors, or target weights according to a scheduled or event-driven methodology.

Also known asrebalanceindex rebalance

Intermediate 16 linked topicsPublished

Definitions

In plain terms

The constituents may stay the same while their target weights or shares are reset.

Technical

A rebalance process defines determination and effective dates, data cutoff, target rules, pricing, share rounding, turnover, corporate-action coordination, publication, and audit lineage.

Scope

Rebalancing does not necessarily change membership; that distinction belongs to reconstitution.

Examples

  • A governed index record identifies index rebalancing with its applicable methodology version, effective time, source, and units.

Common misconceptions

  • Index Rebalancing does not have one universal implementation without the named index methodology, data cutoff, and governance context.

Concept relationships

Related

Contrasts with

Required by

Where this concept is used

Tutorials planned

These catalogued topics use this concept, but their complete build has not shipped yet.

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Evidence and governance

  1. FTSE Russell Index Policy and Methodology Library FTSE Russell, London Stock Exchange Group · first party methodology

    Supports: preferred label, short definition, technical definition

    Limits: The library links multiple documents with separate versions and applicability; the effective document must be identified.

  2. Fintech Builder Glossary Definition Contract The Fintech Builder · internal governed contract

    Supports: variant distinction

    Limits: Defines governed platform behavior rather than claiming these policies are universally prescribed by external McClellan methodology.

Reviewed by
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.