FTB-C000427 / Implementation concept

Williams Percent R Boundary

Williams Percent R Boundary is the governed endpoint behavior of Williams Percent R at the rolling high and low.

Also known as%R endpoint state

Foundation 1 linked topicPublished

Definitions

In plain terms

A close at the high maps to zero and a close at the low maps to minus 100 when the range is nonzero.

Technical

Equality tolerance, price precision, clamping, zero range, and finalized-bar status must be explicit.

Scope

A boundary touch is not an automatic trade or reversal signal.

Examples

  • A governed lesson calculates or identifies Williams Percent R Boundary only after its inputs, window, state, scale, and edge cases are declared.

Common misconceptions

  • A boundary touch is not an automatic trade or reversal signal.

Concept relationships

Prerequisites

Related

Where this concept is used

Evidence and governance

  1. Williams Percent R TA-Lib · first party technical publication

    Supports: preferred label, short definition, technical definition

    Limits: Lookback endpoints, zero-range behavior, and threshold interpretation remain implementation and research choices.

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