Definitions
In plain terms
In a four-for-one split, one old share becomes four new shares and the comparable per-share price is divided by four.
Technical
Processing requires split ratio, affected security, record and effective dates, fractional treatment, price and share factors, trading basis, source, and correction version.
Scope
A split changes units and does not by itself produce an economic investment gain.
Examples
- A governed calculation records stock split with its exact basis, effective time, source, and units.
Common misconceptions
- Stock Split does not have one universal treatment without the applicable methodology, event terms, and data context.
Concept relationships
Broader concepts
Related
Contrasts with
Required by
Where this concept is used
- PrimaryBackward Split AdjustmentD02-F01-A01
- PrimaryForward Split Adjustment: carry later observations onto an earlier share basisD02-F01-A02
- ImportantCRSP Cumulative Price Adjustment: Respect the Vendor Basis, Sign, and GapsD02-F01-A04
- ImportantCRSP Cumulative Share/Volume AdjustmentD02-F01-A05
- ImportantStock-Dividend Adjustment: Convert Price and Quantity Bases Without Inventing ValueD02-F02-A03
- ImportantCorporate-Action Divisor BridgeD03-F01-A04
- ImportantPrice-Weighted IndexD03-F02-A01
Evidence and governance
- Corporate Actions by Public Companies: What You Should Know Financial Industry Regulatory Authority · official platform documentation
Supports: preferred label, short definition, technical definition
Limits: General education does not define every event field, tax result, exchange rule, data-provider adjustment, or index treatment.
- 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-owner-approved
- Last reviewed
- 2026-07-27
- Next review
- 2027-07-27
- Record status
- published