FTB-C000459 / Implementation concept

Prior-Only Ranking Window

Prior-Only Ranking Window uses only observations available before the current value as the percent-rank reference sample.

Also known aslagged rank window

Intermediate 1 linked topicPublished

Definitions

In plain terms

For Connors RSI, today's return is compared with N prior returns and is not inserted into its own denominator.

Technical

The contract freezes window length, endpoints, valid-return counting, missing gaps, first-ready index, and knowledge cutoff.

Scope

Including the current value changes both denominator and rank semantics.

Examples

  • A governed lesson calculates or identifies Prior-Only Ranking Window only after its inputs, window, state, scale, and edge cases are declared.

Common misconceptions

  • Including the current value changes both denominator and rank semantics.

Concept relationships

Prerequisites

Related

Where this concept is used

Evidence and governance

  1. Connors Relative Strength Index Implementation QuantConnect Lean · first party technical publication

    Supports: preferred label, short definition, technical definition

    Limits: The moving branch can change; exact parity requires a pinned revision and an explicit tie and ranking-window contract.

Reviewed by
fintech-builder-batch-008
Last reviewed
2026-07-29
Next review
2027-07-29
Record status
published