I've been observing for some time how many traders ignore one of the most powerful tools in technical analysis: the RSI or Relative Strength Index. It's not that it's complicated, but most use it superficially without truly leveraging its potential.

Let's start with the basics. The RSI measures the magnitude of bullish versus bearish movements over a given period, normalizing everything on a scale from 0 to 100. The interesting part is that it works especially well when identifying extreme situations: overbought above 70 and oversold below 30. But here’s the detail many miss: an asset can remain overbought for months if investors keep buying at higher prices. The RSI alone is not a cure-all.

The real magic happens when you combine the RSI with trend analysis. Look at what happened with Tesla between 2019 and 2022. In May 2019, the indicator was in oversold territory, but the important thing wasn’t just that; rather, when it moved out of that extreme zone, the price started forming higher lows, confirming a genuine uptrend. That’s what you should look for: the confluence between the RSI signal and the chart structure.

Now, there’s something even more powerful you need to know about divergence trading. It occurs when the price movement and the RSI movement go in opposite directions. Imagine the price making higher highs, but the RSI making lower highs. That’s a bearish divergence and a serious warning that the trend is losing strength.

Let’s take the example of Broadcom. In a clear downtrend, the price kept making lower lows, but the RSI was making higher lows. That indicated selling pressure was waning and a bullish reversal was likely. And indeed, two months later, the trend changed. This is what makes divergence analysis special: it gives you a temporary advantage.

With Walt Disney, the opposite happened. The price was rising with higher highs, the trend looked strong, but the RSI showed lower highs. The oscillator detected that the market was losing momentum even though the price was still rising. This bearish divergence foreshadowed a decline that lasted over a year.

To validate if a trend is truly continuing, use the mid-level of the RSI, that 50 level many ignore. When the RSI fluctuates between 50 and overbought, the price tends to go up. When it fluctuates between 50 and oversold, it tends to go down. Meta Platforms is a good example: after leaving oversold territory in March 2020, while the RSI remained oscillating between 50 and overbought, the uptrend was consolidating. It was only when the RSI consistently fell below 50 that the trend changed.

For practical trades, look for these three conditions together: first, the RSI reaches an extreme zone; second, it returns to the fluctuation band; third, a previous trendline is broken. Without all three, it’s just noise.

Many traders make the mistake of combining indicators at random. What works is having a coherent system. For example, waiting for the RSI to reach overbought (a necessary condition) and then confirming with the MACD crossing the midline in the opposite direction (a sufficient condition). Block Inc. showed how this works: overbought RSI plus MACD bearish confirmation allowed for a short entry with much higher probabilities. The trade was held until the MACD crossed the signal line in the opposite direction, four months later.

What you need to remember is that the RSI is a leading oscillator. That means it generates signals before the trend change is confirmed. That’s why you need additional validation. Divergence trading is especially useful for this because it represents a misalignment between price and momentum, something that has historically anticipated significant directional changes.

The invisible mid-level of the RSI, that 50, is more important than it seems. If the asset’s momentum doesn’t have enough strength to keep the indicator above 50, then the downward pressure dominates. As long as the RSI fluctuates between oversold and the mid-level, the downtrend remains consolidated.

In summary, use the RSI as part of a system, not as an isolated tool. Look for confirmations in the chart structure. And pay special attention to divergence trading because they are signals that anticipate directional changes with genuinely high probability. It’s not magic; it’s just well-applied technical analysis.