FTB-C000131 / Market data field

Corporate Action Effective Date

A corporate action effective date is the market or legal date from which the declared event treatment applies.

Also known asaction effective dateeffective date

Foundation 12 linked topicsPublished

Definitions

In plain terms

A split can be announced earlier but begin trading on the new share basis only from its effective date.

Technical

The field requires event type, affected security and market, calendar and time zone, boundary convention, source, status, and distinction from publication and availability.

Scope

Different legal, settlement, tax, and index treatments can have separate effective boundaries.

Examples

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

Common misconceptions

  • Corporate Action Effective Date does not have one universal implementation without the named index methodology, data cutoff, and governance context.

Concept relationships

Prerequisites

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.

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

Evidence and governance

  1. Nasdaq Daily List Product Description Nasdaq Trader · official exchange

    Supports: preferred label, short definition, technical definition

    Limits: Product coverage, field semantics, timing, history, access, and redistribution are specific to Nasdaq and its delivery products.

  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.