Here is a setup that actually worked. ASX200 futures, 15-minute chart, August 2023. RSI(14) was sitting at 68 — not overbought yet, just trending. A trader using only RSI might have held on. But ATR(14) had quietly doubled from 8 to 16 points over four candles, signalling expanding volatility. Together, those two numbers changed the decision entirely.
Most traders stack indicators hoping more information means more certainty. They add MACD to RSI, then Stochastics on top, then Bollinger Bands for good measure. What they actually build is a dashboard of redundancy. RSI and Stochastics both measure momentum from closing prices — they are siblings, not colleagues. Running both gives you the same signal twice, dressed in different clothes.
The principle is category separation. Momentum indicators — RSI, MACD, Stochastics — tell you the direction and strength of price movement. Volatility indicators — ATR, Bollinger Band width, standard deviation — tell you how much the market is moving, not which way. Volume indicators — OBV, VWAP — confirm whether participants are actually behind the move. Combine one from each category and you get three genuinely different data points.
A practical starting combination is RSI(14) for momentum, ATR(14) for volatility context, and OBV for volume confirmation. If RSI approaches 70, ATR is expanding, and OBV is flat or declining, traders historically treat that divergence as a caution signal — momentum looks stretched but participation is thinning. That three-way check takes under ten seconds to read. For deeper background on how these tools are constructed, the Relative Strength Index on Investopedia covers RSI's formula and thresholds clearly, the Average True Range on Wikipedia explains why ATR is category-pure, and On-Balance Volume on Investopedia shows how OBV filters genuine breakouts from fakeouts.
Two indicators from different categories beat five from the same one, every single time. More signals is not more edge — it is more excuses for indecision.
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