FTB-C000076 / Market data field

OHLC

OHLC is a four-field summary containing the open, high, low, and close prices for a declared interval and eligibility policy.

Also known asopen high low closeOHLC prices

Foundation 4 linked topicsPublished

Definitions

In plain terms

It compresses many events into the first, maximum, minimum, and final eligible price observations in a bar.

Technical

OHLC requires explicit instrument, interval boundaries, timestamp ownership, session and calendar, trade eligibility, correction policy, currency, and empty-interval behavior.

Scope

Vendor daily OHLC fields and reconstructed intraday OHLC can follow different rules.

Examples

  • A governed dataset records ohlc explicitly and preserves the source context needed to interpret it.

Common misconceptions

  • OHLC does not have one universal meaning or policy without its declared source, scope, and data contract.

Concept relationships

Related

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 Important
  • D01-F02-A01 Primary
  • D06-F01-A01 Prerequisite
  • D07-F03-A05 Prerequisite

Evidence and governance

  1. Daily TAQ Client Specification New York Stock Exchange / Intercontinental Exchange · official exchange

    Supports: preferred label, short definition, technical definition

    Limits: Product-specific and licensed; it does not create universal eligibility, repair, imputation, tolerance, or aggregation rules.

  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.