By Islam BarakaDefinitions
In plain terms
A liquid security usually trades frequently with available depth and relatively small execution costs, but liquidity changes with conditions and trade size.
Technical
Liquidity is multidimensional and may use volume, value traded, spread, depth, impact, turnover, frequency, and days-traded measures over a declared market and window.
Scope
High volume alone does not prove sufficient liquidity for every order size or stress period.
Examples
- A governed methodology records liquidity with its source, cutoff, units, parameters, and effective version.
Common misconceptions
- Liquidity does not have one universal implementation without the declared methodology, data basis, and constraints.
Concept relationships
Where this concept is used
Tutorials planned
These catalogued topics use this concept, but their complete build has not shipped yet.
- D03-F06-A02 Prerequisite
- D03-F06-A04 Important
- D03-F06-A08 Important
Evidence and governance
- MSCI Global Investable Market Indexes Methodology Library MSCI · first party methodology
Supports: preferred label, short definition, technical definition
Limits: MSCI methodology and production data are provider-specific and branded data or calculated values may require licenses.
- 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
- fintech-builder-batch-004
- Last reviewed
- 2026-07-27
- Next review
- 2027-07-27
- Record status
- published