The Williams’ %R (usually called the Williams Percent Range or Williams Overbought/Oversold Index) is a simple, yet effective technical analysis tool that excels at determining overbought and oversold levels. This indicator would work best on intraday, daily, weekly and monthly time intervals. Being an oscillator, it moves from 0 to -100 and is very close to the Stochastic in the way it works. In order to use %R effectively, you will have to understand how it works, what it is capable of and what are the limitations.
How it works?
Williams’ %R is an oscillator-type indicator, that is quite similar in its nature to the Stochastic Oscillator with the most notable difference being their scales. The Williams Percent Range uses a 0 to -100 scale, while for the Stochastic the readings vary from 0 to 100. The Stochastic can also boast a moving average, used as a source of crossover signals.
The period, that is used by %R by default, is 14 candles. The indicator will, therefore, cover the period of 14 hours for a 1H graph, and 14 weeks for a 7D graph. However, it can be changed to increase the sensitivity of the instrument (alternatively, to lower the number of false signals). The indicator shows how the current price compares to the highest price over a set period of time.
Now, to the indicator’s readings. When they get close to 0, it means that the current price is getting close to (or above) the highest price, observed during the selected period. When the opposite is true, and the indicator gets to the -100 threshold, the current price is lower than the lowest price of the respective period. Finally, when the readings gravitate to the middle of the channel, the current price is equal to the average price of the lookback period.
How to apply?
There are several ways to put Williams’ %R to work. This indicator is most commonly used to determine overbought/oversold levels, provide momentum confirmations and trade signals.
When the indicator is above -20, the asset is considered to be overbought. When it falls below -80, the asset is oversold. The good thing is the indicator will use both readings as by default. You, therefore, don’t have to adjust the settings before putting the indicator into action. Don’t let the seeming simplicity of this tool fool you: overbought does not always mean the price is about to go down, just as oversold doesn’t necessarily mean that the price action will go through the roof.
Of course, all trends are destined to reverse. Yet, overbought/oversold levels don’t tell you when to expect the reversal. Suchlike signals can be used to confirm readings, received from other indicators. Beware of false and late signals, however, as they are quite common when trading with a single indicator and no confirmations.
In trading, momentum is just as important as the direction of the trend. A strong momentum means the trend is destined to last some more. Adversely, when the momentum becomes weaker, the trend runs out of its strength and can be expected to stagnate or even reverse. This kind of information is of great use to any trader.
Imagine you have spotted a newborn bullish trend. Should the %R reach -20 and stay above it, the current trend can be expected to last (ptobably). If the opposite is true and %R stays below, the trend might be running out of steam and can, therefore, be expected to reverse. The same applies to the negative trends. When the indicator is below -80, the trend is stronger and can be expected to last. When it gets above the -80 threshold, the reversal is possible.
As most other indicators, Williams’ %R should not be used on its own, as it will provide a lot of false and late signals. And as most indicators, it is also not capable of providing accurate signals 100% of the time. When working with the Williams Percent Range, some traders get out of the trend too early, losing a substantial portion of potential upside. It is, therefore, possible to keep the position open as long as the price is getting overall higher (lower for short positions), disregarding the signals provided by Williams’ %R. It is important to remember that it is still a trading tool, not a ready-to-use strategy.Trade now