FTB-C000066 / Market data field

Market Close

Market close is the venue-defined boundary or auction event that ends a specified trading session.

Also known assession closeclosing time

Foundation 2 linked topicsPublished

Definitions

In plain terms

A closing auction can produce an official price while some extended-hours trading continues afterward.

Technical

Close semantics require venue, product, session, date, time zone, boundary policy, auction treatment, and exceptional-calendar handling.

Scope

It is not automatically the timestamp of the day's last trade.

Examples

  • A governed dataset records market close explicitly instead of inferring it from an ambiguous field.

Common misconceptions

  • Market Close does not have one universal meaning without its stated market, source, and time 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.

  • D01-F01-A01 Mentioned
  • D01-F03-A04 Important

Evidence and governance

  1. NYSE Trading Hours and Calendars New York Stock Exchange · official exchange

    Supports: preferred label, short definition, technical definition

    Limits: Hours vary by venue, product, date, rule version, and exceptional notice; they are not a universal calendar.

  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
2026-07-26
Next review
2027-07-26
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.