FTB-C000116 / Financial concept

Corporate Action

A corporate action is an issuer or security event that changes rights, quantities, cash flows, identity, or trading terms.

Also known asissuer actioncorporate event

Foundation 16 linked topicsPublished

Definitions

In plain terms

Dividends, splits, rights issues, spin-offs, mergers, and delistings can all require coordinated changes to prices, shares, identifiers, or returns.

Technical

A governed event model preserves action type, affected securities, terms, dates, status, source, effective and availability times, elections, corrections, and downstream treatments.

Scope

Event classification and treatment can differ among legal, tax, accounting, market-data, and index contexts.

Examples

  • A governed calculation records corporate action with its exact basis, effective time, source, and units.

Common misconceptions

  • Corporate Action does not have one universal treatment without the applicable methodology, event terms, and data context.

Concept relationships

Narrower concepts

Related

Required by

Where this concept is used

Tutorials planned

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

  • D02-F01-A01 Prerequisite
  • D02-F01-A02 Prerequisite
  • D02-F01-A04 Important
  • D02-F01-A05 Important
  • D02-F02-A01 Prerequisite
  • D02-F02-A02 Prerequisite
  • D02-F02-A03 Prerequisite
  • D02-F02-A04 Prerequisite
  • D02-F02-A05 Prerequisite
  • D02-F03-A04 Prerequisite
  • D02-F03-A05 Prerequisite
  • D03-F01-A03 Important
  • D03-F01-A04 Primary
  • D03-F02-A01 Important
  • D03-F04-A01 Important
  • D03-F06-A05 Important

Evidence and governance

  1. Corporate Actions and Events Guide FTSE Russell, London Stock Exchange Group · first party methodology

    Supports: preferred label, short definition, technical definition

    Limits: Rules are specific to applicable FTSE Russell indices and can contain market, eligibility, tax, and timing exceptions.

  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.