QuanTAlib/lib/momentum/ao/Ao.md

AO - Awesome Oscillator

The Awesome Oscillator (AO) is a momentum indicator used to measure market momentum. It calculates the difference between a 34-period and 5-period Simple Moving Average (SMA) of the median prices (High + Low) / 2.

Formula

Median Price = \frac{High + Low}{2} AO = SMA(Median Price, 5) - SMA(Median Price, 34)

Where:

• SMA is the Simple Moving Average.

Usage

C# Code

using QuanTAlib;

// Create AO with default periods (5, 34)
var ao = new Ao();

// Or specify custom periods
var aoCustom = new Ao(5, 34);

// Update with a bar
var result = ao.Update(bar);

// Result contains the AO value
Console.WriteLine($"AO: {result.Value}");

// Batch calculation
var series = new TBarSeries();
var results = Ao.Batch(series, 5, 34);

Parameters

Parameter	Type	Default	Description
fastPeriod	int	5	The period for the fast SMA.
slowPeriod	int	34	The period for the slow SMA.

Properties

Property	Type	Description
Last	TValue	The latest calculated AO value.
IsHot	bool	Indicates if the indicator has enough data to be valid (slow period reached).
Name	string	The name of the indicator, e.g., "Ao(5,34)".

Methods

Method	Description
Update(TBar bar)	Updates the indicator with a new bar.
Update(TValue val)	Updates the indicator with a new value (assumed to be Median Price).
Reset()	Resets the indicator state.