Commodity Channel Index (CCI)
The Commodity Channel Index (CCI) measures how far price has deviated from its statistical average, on an unbounded scale where roughly ±100 contains most movement. This article explains how CCI is read, why readings beyond +100 and -100 signal strength rather than just overbought/oversold, the zero-line and extreme-zone interpretations, divergence, and the fact that — despite its name — it works on any market, not just commodities.
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Stochastic Oscillator
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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.
RSI
The Relative Strength Index (RSI) is a momentum oscillator that measures the speed and size of recent price changes on a 0–100 scale. This article explains what RSI actually measures, the meaning (and frequent misuse) of the 70/30 overbought and oversold thresholds, the centreline at 50, and RSI divergence — where momentum and price disagree. It is emphatic that overbought is not a sell instruction and oversold is not a buy one: in strong trends RSI can stay pinned at an extreme for a long time.
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