Arms Index (TRIN) Strategy The Arms index (TRIN) is a technical analysis indicator that compares advancing
and declining stock issues and trading volume as an indicator of overall market
sentiment. It measures the relationship between market supply and demand and is
used as a predictor of future price movements in the market, primarily on an
intraday basis. The Arms index seeks to provide a more dynamic explanation of
overall movements in the composite value of stock exchanges, such as the NYSE or
NASDAQ, by analyzing the strength and breadth of these movements.
