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# Ultimate Oscillator

### Description

Larry Williams developed the Ultimate Oscillator, which was first published in 1985. The Ultimate Oscillator is calculated by means of taking the weighted sum of three oscillators in different timeframes. These three timeframes are the short-term, middle and long-term market cycles. The typical period lengths used are 7, 14, and 28, and the value of the indicator moves between 0 and 100. Values above 70 signify an overbought situation, and values below 30 show that it is oversold.

### Interpretation

Williams defined the following criteria for a buy signal:
A bullish divergence between price and oscillator can be observed, meaning that the market makes a new low but the oscillator remains unchanged.
While this divergence is forming, the oscillator falls below 30.
The oscillator will then resume its upward move towards the high at which it peaked before the divergence began forming.
The buy signal is created when the price breaches that last high.
The long position is closed if the oscillator rises above 70 or if the oscillator rises above 50 and then falls back below 45. A sell signal consists of bearish divergences forming above 70. These positions are closed once the 30 level marker is breached.

### Usage

UltimateOscillator(int fast, int intermediate, int slow)
UltimateOscillator(IDataSeries inSeries, int fast, int intermediate, int slow)
UltimateOscillator(int fast, int intermediate, int slow)[int barsAgo]
UltimateOscillator(IDataSeries inSeries, int fast, int intermediate, int slow)[int barsAgo]

### Return value

double
When using this method with an index (e.g. UltimateOscillator (5)[int barsAgo] ), the value of the indicator will be issued for the referenced bar.

### Parameters

 ​ ​ inSeries Input data series for the indicator fast Number of bars for the calculation of the short-term oscillator intermediate Number of bars for the calculation of the intermediate oscillator slow Number of bars for the calculation of the slow indicator

### Visualization

Ultimate Oscillator

### Example

// Output of the values for the UltimateOscillator with settings of 7,14,28
Print("The current value for the Ultimate Oscillator is " + UltimateOscillator(7, 14, 28)[0]);