FTB-C000409 / Indicator

Cutler RSI

Cutler RSI is an RSI variant that uses rolling simple averages of gains and losses instead of Wilder recursive averages.

Also known assimple-average RSI

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Definitions

In plain terms

It can produce a different early path and different responses even with the same nominal period.

Technical

The specification freezes window, full-window readiness, gain/loss split, zero states, missing values, and revision handling.

Scope

It must not be called equivalent to Wilder RSI merely because both outputs use a zero-to-100 scale.

Examples

  • A governed lesson calculates or identifies Cutler RSI only after its inputs, window, state, scale, and edge cases are declared.

Common misconceptions

  • It must not be called equivalent to Wilder RSI merely because both outputs use a zero-to-100 scale.

Concept relationships

Prerequisites

Related

Where this concept is used

Evidence and governance

  1. Relative Strength Index TA-Lib · first party technical publication

    Supports: preferred label, short definition, technical definition

    Limits: Seed, flat-series behavior, unstable periods, and platform compatibility must be frozen before claiming parity.

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