ARMS Index (TRIN)

ARMS Index (TRIN)

Purpose of the ARMS index is to gauge whether there’s volume in rising or falling stocks.

A short-term techncial analysis breadth indicator calculated as the following:
TRIN

 

TRIN stands for TRaders’ INdex.

Investopedia explains Arms Index – TRIN A ratio of 1 means the market is in balance; above 1 indicates that more volume is moving into declining stocks (bearish); and below 1 indicates that more volume is moving into advancing stocks (bullish). This indicator was developed by Richard Arms.

 

Source: http://www.investopedia.com/terms/a/arms.asp