TRIN - The NYSE Short Term Trading Index (Arms Index)

 

 

The Short Term Trading Index (Trin) was invented over 30 years ago by Richard Arms and is also known as ARMS Index. It is calculated by dividing advancing issues by declining issues and advancing volume by declining volume. The first result is then divided by the latter and the result is the TRIN. If the index is above one, the average volume of stocks that fell on the NYSE was greater than the average volume of stocks that rose and vice versa. But it is most confirmative when it reaches extremes. This indicator rises sharply when the market is most depressed and selling is climaxing and falls to very low levels during buying frenzies.
The chart below shows you the Short Term Trading Index on a weekly basis. A 4-week moving average is applied to smooth out the swings.

 

Trin - NYSE Short Term Trading Index (Arms Index) - This indicator rises extremely when bearish sentiment reaches high levels which is considered bullish. Low readings indicate an overbought market.
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Historical data
 
  Past performance does not  guarantee future results!
 

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