FTB-C000424 / Indicator

Williams Percent R

Williams Percent R expresses the close's position in a rolling high-low range on a zero-to-minus-100 scale.

Also known asWilliams %RWILLR

Intermediate Formula defined 1 linked topicPublished

Definitions

In plain terms

Zero means the close equals the selected high and minus 100 means it equals the selected low.

Technical

The contract freezes lookback, high/low/close basis, window endpoints, zero range, finalized bars, missing values, and precision.

Scope

Its values are oscillator points, not percentage returns.

Formula

Williams %R = -100 * (HH - C) / (HH - LL)
LaTeX: W\%R_t=-100\frac{HH_t-C_t}{HH_t-LL_t}
SymbolMeaningUnit
HH_trolling highest highprice
LL_trolling lowest lowprice
C_tcurrent closeprice

Output unit: percent-scale points

Examples

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

Common misconceptions

  • Its values are oscillator points, not percentage returns.

Concept relationships

Prerequisites

Related

Required by

Where this concept is used

Tutorials planned

These catalogued topics use this concept, but their complete build has not shipped yet.

  • D07-F03-A04 Primary

Evidence and governance

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

    Supports: preferred label, short definition, technical definition, formula

    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
Written by

Fintech engineer building market-data and financial systems, and the author of every article, glossary record, and reference implementation on The Fintech Builder.