Definitions
In plain terms
For a 52-week high test, it is the highest selected price found in the specified prior window.
Technical
A contract must define window length, session calendar, inclusion of the current observation, price field, and missing-data policy.
Scope
It is window-dependent and need not be an all-time record.
Formula
Lookback high = max(x over window W)H_t=\max_{j\in W_t}x_j| Symbol | Meaning | Unit |
|---|---|---|
x | observed value | input unit |
W | declared lookback window | sessions |
Output unit: input unit
Examples
- A Fintech Builder lesson can compute or identify Lookback High only after declaring its inputs, timing, and edge-case rules.
Common misconceptions
- It is window-dependent and need not be an all-time record.
Concept relationships
Prerequisites
Where this concept is used
Evidence and governance
- New 52-Week Highs and Lows for Exchanges StockCharts ChartSchool · secondary methodology
Supports: preferred label, short definition, technical definition, formula
Limits: Provider symbols and eligibility rules may differ from another data vendor's point-in-time universe.
- Reviewed by
- fintech-builder-batch-005
- Last reviewed
- 2026-07-27
- Next review
- 2027-07-27
- Record status
- evidence reviewed
This record is evidence-reviewed and readable, but not yet promoted to published — it is served noindex,follow and excluded from the sitemap.