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

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