Williams %R (Percent Range), developed by Larry Williams, is a momentum oscillator that measures where the current closing price sits within the highest high-lowest low range over a specified lookback period — typically 14 periods. It is calculated as: Williams %R = [(Highest High – Close) ÷ (Highest High – Lowest Low)] × (-100). The indicator oscillates between 0 and -100 — readings from 0 to -20 indicate overbought conditions (the price is near the top of its recent range), while readings from -80 to -100 indicate oversold conditions (the price is near the bottom of its recent range). Williams %R is the inverse of the Stochastic %K indicator and provides similar signals — buy signals are generated when the indicator crosses back above -80 from oversold territory, and sell signals when it crosses back below -20 from overbought territory. In Indian equity markets, Williams %R is used by intraday and swing traders on Nifty 50, Bank Nifty, and individual stocks to identify short-term overbought and oversold conditions — particularly useful in conjunction with trend analysis to time pullback entries within established trends.
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