TRIN Market Breadth and Bollinger Band Reversal Strategy
Summary
The document defines the Arms Index, or TRIN, as the ratio of advancing stocks to declining stocks divided by advancing volume to declining volume. It interprets readings below 1 as generally bullish and readings above 1 as generally bearish, while unusually high or low values may signal overbought or oversold conditions. It cautions that traders should seek price confirmation because extreme readings do not guarantee a reversal. The article also describes calculating TRIN from stock direction and volume data.
Its trading example combines a moving average and standard deviation bands around TRIN, with entry and stop conditions intended to trade mean reversion. The strategy is reported as tested on the S&P 500, Dow Jones Industrial Average, and Nasdaq 100, with cumulative return and drawdown figures stated in the document. Those results are backtest claims rather than evidence of live performance; the article notes that volume inputs can distort TRIN and suggests examining breadth and volume ratios separately. It does not provide enough detail in the supplied text to assess robustness, costs, or out-of-sample behavior.
Key ideas
- TRIN combines the ratio of advancing to declining stocks with the ratio of their respective volumes.
- Readings below 1 are described as generally bullish, while readings above 1 are described as generally bearish.
- Extreme TRIN readings may indicate overbought or oversold conditions, but the article advises waiting for price confirmation.
- The described strategy applies moving average and standard deviation bands to TRIN to generate mean-reversion trades and stops.
- Volume inaccuracies can make TRIN misleading, so breadth and volume ratios may warrant separate analysis.
Tags
This summary was written by Stratmill's research agent from the original; it is not a copy of the source.