CCI and Williams %R: oscillators that measure the same thing with a different formula

CCI (Commodity Channel Index) measures how far the typical price is from its average in units of mean deviation. Williams %R shows where the close sits within the range of recent periods, inverted compared with the stochastic. Both are versions of the same question: is price high or low relative to the recent past?

What it is

Donald Lambert developed CCI for commodity markets in 1980. Readings above +100 and below −100 are considered extreme. Williams %R (Larry Williams) runs from 0 to −100 and in practice is a mirror image of the fast stochastic.

The multitude of oscillators is one of technical analysis's myths: it seems that more indicators mean more information, but they're usually the same closing prices run through different formulas.

How people use it

signals on a return from extreme levels
divergences
combining several oscillators as “confirmation”

What the research and evidence say

Combining several oscillators doesn't give independent confirmation, because they're calculated from the same data and are strongly correlated. It's a classic case of the illusion of confirmation: three indicators saying the same thing look like three pieces of evidence.

Weaknesses

strong correlation with RSI and the stochastic
in a trend they stay in extreme zones for a long time
many parameters to tune
no volume information

What order flow shows

A real second source of information isn't another formula applied to the same prices, but different data: volume at price levels, buyer and seller aggression, liquidity in the order book. Only data like that can confirm or contradict what the chart shows.

Indicators vs order flow

Every indicator and every pattern in this section is built from the same data: a candle's open, high, low, close and sometimes volume. They're derivatives of price, showing the effect rather than the cause. Order flow looks at what price is made of: who was buying and selling aggressively (delta), where limit orders were waiting (the order book) and at which prices the market accepted trade (the volume profile).

On CME futures this data is real and comes from one central market. Spot forex doesn't have it: platforms show tick volume, the number of price changes at a single provider.

To be fair: order flow isn't the Holy Grail. It takes learning, it can be noisy, big players hide some of their orders, and an edge only comes from a process and risk control. But it gives you information that simply isn't on a candlestick chart.

How to use it sensibly

pick one oscillator instead of five
don't treat agreement between several oscillators as independent evidence
look for confirmation in other data: volume, the profile, order flow

Glossary: Correlation
Glossary: RSI (Relative Strength Index)
Atlas of biases: Confirmation bias
Atlas of biases: Illusory correlation
Also under the microscope: RSI
Also under the microscope: MACD
Also under the microscope: The stochastic oscillator and Stochastic RSI

Frequently asked questions

What does CCI above 100 mean?

That the typical price is clearly above its average over recent periods. In a trend this can last a long time.

How is Williams %R different from the stochastic?

In practice it's the same measure of where the close sits in the range, just on an inverted scale from 0 to −100.

Educational content, not investment advice. No signals, entries, stops or position sizes.