RSI Analysis for Stocks and Crypto

What the 0-100 scale is measuring

The Relative Strength Index compares the average size of recent gains with the average size of recent losses, usually over fourteen periods, and maps the ratio onto a bounded scale from 0 to 100. Fifty is the point where average gains and average losses are equal.

Two things follow from that definition. RSI describes the character of recent closes, not whether an asset is cheap or expensive. And because the scale is bounded, it compresses at the ends: the difference between 85 and 90 represents a far larger imbalance than the difference between 50 and 55.

Why 70 and 30 are conventions, not signals

The thresholds are a convention from the indicator’s original publication, not a property of markets. They mark where an imbalance has become pronounced, and pronounced imbalances are exactly what strong trends produce.

A more honest reading is that RSI above 70 means buyers have dominated recent closes. Whether that ends is a question about trend strength and about the levels overhead, and neither of those is inside the RSI calculation.

Why RSI stays extreme in strong trends

In a strong trend the denominator of the calculation collapses. If almost every bar closes higher, the average loss over the lookback becomes tiny, and RSI is pinned near the top of its range simply because there is nothing on the other side of the ratio.

This is why RSI can hold above 70 for weeks in a persistent uptrend, and why selling every reading above 70 in such a trend is the single most expensive habit built on this indicator. In a strong trend, an extreme RSI is a description of the trend, not a warning about it.

Divergence and what it is worth

Divergence occurs when price makes a higher high while RSI makes a lower high, or the mirror image at a low. It says the second push was made with less force than the first, which is genuine information about the quality of the move.

What it is not is a timing tool. Divergences can repeat two or three times before price responds at all, and in a powerful trend they can persist without ever resolving. Treat divergence as a reason to tighten risk, not as an entry trigger by itself.

The context RSI needs

RSI becomes far more usable once you know whether a trend exists. ADX below roughly 20 suggests a range, and in a range the 70 and 30 zones behave much closer to their textbook description. Above 25 a trend is in place and the extremes should be discounted accordingly.

Pair it with structure as well. RSI at 72 into a resistance zone that has been tested repeatedly is a very different situation from RSI at 72 in open space above all recent highs.

How Bubixo reads RSI

RSI is computed on the server as one of more than twenty indicators, and the model receives its value together with the trend strength and structural readings around it rather than in isolation — which is what stops it from reporting an extreme as an automatic reversal.

The Opportunity Radar treats it the same way. Its momentum sub-score is built on the distance of RSI from 50, but the contribution is deliberately pulled back at the extremes, because a reading stretched to the edge of the scale is a risk factor rather than an opportunity.