Momentum
RCI Ribbon on Gold
The RCI Ribbon draws the Rank Correlation Index three times with three window lengths. It shows whether price has been climbing or falling in an orderly way over the short, the middle and the long run at once.
What it shows
A blue 10-candle line, a red 30-candle line and a green 50-candle line share one -100 to +100 pane under the candles. A shaded strip spans -80 to 80, with grey marks at 80, 0 and -80.
How Pravex works it out
- For each of the three lengths, take that many candles and rank them by time (newest = 1) and by price (highest = 1).
- Equal prices share the average of their ranks.
- Compare the two rankings with the Spearman rank correlation, in percent. +100 means every price was higher than the one before it, -100 means every one was lower.
- Do this three times on the same source, once per length.
- Imagine (numbers invented) the last 10 closes rose without a single dip: the short line reads +100, while the 50-candle line can still sit lower if the longer stretch was choppy.
Settings
| Setting | Default | What changing it does |
|---|---|---|
| Source | Close | The price that gets ranked in all three lines. |
| Fast line length | 10 | Candles in the blue line. It turns first and swings the most. The smallest length is 2. |
| Middle line length | 30 | Candles in the red line. It sits between the other two in speed. The smallest length is 2. |
| Slow line length | 50 | Candles in the green line. It moves slowly and shows the larger drift. The smallest length is 2. |
How traders read it
When all three lines sit above zero, price has been climbing in an orderly way at every scale. When all three sit below, it has been falling at every scale. That agreement is the reason to use a ribbon: it is a steadier trend than any single line can show.
The short line usually turns first. When it drops from above 80 while the long line is still high, a pullback has begun inside a larger rise. Whether it grows is for the middle and long lines to confirm.
Beyond the 80 and -80 marks, the run has been very clean. Lines that bunch together near zero mean no clear direction at any scale.
When it misleads
The ribbon counts order, not size, so a drift of tiny steps reads the same as a violent rise. In a sideways stretch the short line whips between the bands while the long one hovers near zero, and the crosses mean little. On gold, long runs of small candles can push all three lines toward the edge on almost no real movement.
Questions and answers
Why does the blue RCI line turn before the green one?
They are the same calculation over 10, 30 and 50 candles. The 10-candle blue line reorders after a few closes; the 50-candle green line needs weeks of hourly gold to change its order.
RCI Ribbon vs RCI: what is the difference?
The RCI draws one window. The ribbon draws three at once, so you see several time scales without adding indicators.
Is it bullish when all three RCI lines sit above 80?
It says price rose in an almost unbroken order over all three windows, a very one-sided stretch. That describes the past; such runs often pause soon after.
Can the ribbon use 9, 26 and 52 instead?
Yes. Each of the three lengths is its own setting, with a smallest value of 2, so any trio works.
Related: Rank Correlation Index, Trend Strength Index, True Strength Index, every indicator.
Not financial advice. Read our disclaimer.
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