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Williams %R

Williams %R is a momentum oscillator that measures where price closes relative to its recent high-low range, on an inverted -100 to 0 scale. This article explains how to read it (above -20 overbought, below -80 oversold), how it relates to the Stochastic Oscillator, how it is used for overbought/oversold, momentum failures and divergence, and the same essential caveat that an extreme reading can persist in a strong trend.

10 min readPublished 26 June 2026

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Key terms

ATRBollinger BandsBreakoutCandlestickDivergenceDojiFibonacci RetracementGap

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Stochastic Oscillator

The Stochastic Oscillator measures where price closes within its recent high-low range, on a 0-100 scale, to flag momentum and overbought/oversold conditions. This article explains the %K and %D lines, the 80/20 zones, signal-line crossovers, divergence, the difference between fast and slow stochastics, the more sensitive Stochastic RSI, and the crucial point that 'overbought' can stay overbought in a strong trend.

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