This is a trading item or a component that was created using QuantShare by one of our members.
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The advance indicator counts the number of advancing stocks in a specific market, while the decline indicator counts the number of stocks that are declining.
This item downloads the number of advancing and declining issues of the following markets: New York Stock Exchange (NYSE), American Stock Exchange (Amex) and National Association of Securities Dealers Automated Quotation (NASDAQ).
The advance decline data for the NASDAQ exchange is only for Small Cap stocks.
Unfortunately, the data is valid only starting from 2009.
I will let you know if I found a more complete data for these indicators.
The indicator symbols are created automatically but the full name is empty, so I suggest you assign a name to each one, so that they can be easily recognized later.
^ADVN: Advancing NYSE issues
^ADVA: Advancing Amex issues
^ADVSE: Advancing small caps NASDAQ issues
^DECN: Declining NYSE issues
^DECA: Declining Amex issues
^DECSE: Declining small caps NASDAQ issues
Advance decline ratio can be calculated using the QuantShare formula or using the composite plug-in.
You just have to reference both the advance and decline data then divide 'The number of advancing issues' by 'the number of declining issues'.
The same can be applied to the Advance/Decline Index which is: '(Advances - Declines) + Prior Advance/Decline Index Value'.
Idem for the Advance/Decline Line.
A lot of composite indicators can be constructed using the AD data; for example, the Arms Index (TRIN), the 1% Exponential Moving Average (EMA) of Advance-Declines.
You can search in the internet for the keyword 'Market Breadth indicators' to get more information.