Specifics of trin analysis

Trin (arms index) has been produced to detect overbought/oversold levels and could be considered as one of the most complex technological studies from the group of breadth (advance/decline) indicators in its interpretation.

The trin indicator is grounded on the advance decline issues and advance decline volume info. The same as with other breadth indicators, trin could be applied to the basket of stocks (indexes, exchanges, etc) and cannot be applied to a single stock. It’s calculated as a proportionality amidst advance/decline issues proportionality and advance/decline volume proportionality:

Trin = [advance decline issues ratio] / [advance decline volume ratio]

Where

Advance decline issues proportionality = [advanced stocks] / [declined stocks]

And

Advance decline volume proportionality = [advanced volume] / [declined volume]

Furthermore trin formula could be expressed in the following format:

Trin = ([advanced stocks] * [declined volume]) / ([declined stocks] * [advance volume])
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