Breadth Indicators

Open-10 TRIN Indicator

A smoothed variation of the Arms Index, the Open-10 TRIN study is a market breadth indicator that uses advancing/declining volume and advancing/declining issues to measure the market’s strength or momentum. Chart courtesy of Prophet Financial Syste

Arms Index

This short-term technical analysis breadth indicator was developed by Richard W. Arms in 1967. The Arms Index, or TRIN (TRading INdex) shows the ratio between the average volume of declining stocks and the average volume of advancing stocks. A rising TRIN is beari