Rank Correlation Index (RCI) – Identify Trend Strength & Potential Reversals

The Rank Correlation Index (RCI) is a momentum oscillator that analyzes the correlation between price ranking and chronological ordering. The more consistently prices rise, the closer the RCI moves to +100; the more consistently they fall, the closer it moves to -100. Values near zero indicate a lack of trend or a sideways market.

The indicator analyzes:

• RCI evaluates the consistency of price direction over a given period.
• Unlike traditional oscillators (e.g., RSI), RCI is less sensitive to noise and better highlights trend strength.

Key parameters:

• Period – number of bars used (default: 14 or 27).
• Source Type – Close, Typical, Median, or Weighted price.
• Upper/Lower levels – adjustable overbought/oversold thresholds.
• Signal line (optional) – moving average of RCI for crossovers.

Typical use cases:

• Trend confirmation – consistently positive/negative RCI reinforces direction.
• Pullback entries – wait for RCI to exit extreme zones and re-enter with the main trend.
• Exhaustion detection – extreme values + divergences hint at possible reversals.

Trader profile:

• Suitable for day traders, swing traders, and position traders using technical analysis.
• Appropriate for intermediate and advanced traders, but beginners can use it after studying the concept.

Notes:

• In sideways markets, RCI may produce false crossovers – use in conjunction with trend analysis.
• Do not use RCI alone; combine with support/resistance or other indicators.