In the Indian stock market, the Relative Strength Index is one of the most popular tools used by traders and investors. Its utility is to understand whether a stock or index has moved too far, too fast. This tool helps you spot potential turning points before they happen. Due to this reason, it has become a favourite among both beginners and experienced traders on NSE and BSE.
What does this Tool Measure?
This momentum oscillator measures the speed and change of recent price movements. This measurement is done on a scale of 0 to 100. It shows you whether a stock is being bought aggressively i.e. overbought or sold aggressively i.e. oversold. This often signals that a price reversal or pause could be coming.
How does it Work?
- Calculated using average gains and average losses over a set period (usually 14 days)
- Plotted as a line moving between 0 and 100
- Moves closer to 100 when buying pressure is strong
- Moves closer to 0 when selling pressure is strong
Key Levels to Remember
| Reading | Meaning | What Traders Often Do |
| Above 70 | Overbought zone | Watch for possible price correction or booking profits |
| Below 30 | Oversold zone | Watch for possible bounce-back or buying opportunity |
| Around 50 | Neutral zone | No strong bias either way |
Why Indian Traders Use it
When it comes to Indian markets, especially mid-cap and small-cap stocks, are famous for sharp rallies and equally sharp corrections. This tool helps traders:
- Identify when a rallying stock like a PSU bank or IT counter may be running out of steam
- Spot potential entry points in fundamentally strong stocks that have been beaten down
- Confirm trends alongside other tools like moving averages
- Never chase a stock purely based on price action or social media hype
Step-by-Step Process to Read it on a Chart
- Open the chart of any stock or index (examples are Nifty 50 or Bank Nifty) on your trading app
- Add the oscillator from the indicators list, keep the default as 14-period setting
- Look at where the line currently sits, whether it is above 70, below 30, or in between
- Check if the line is diverging from price (an example is price making a new high while the line makes a lower high) as this can hint at weakening momentum
- Combine this reading with support, resistance, or trend lines before making any decision
5 Common Signals to Check Out
| Overbought reversal | Line crosses above 70 and then falls back below it |
| Oversold bounce | Line crosses below 30 and then rises back above it |
| Bullish divergence | Price falls to a new low, but the line does not — often seen before a recovery |
| Bearish divergence | Price rises to a new high, but the line does not — often seen before a correction |
| Centerline crossover | Line moving above or below 50 to confirm trend direction |
3 Key Points to Keep in Mind
- During strong trending markets, a stock can stay overbought or oversold for a long time, so don’t rely on this reading alone
- It works best when combined with volume, trend lines, or moving averages
- Shorter periods (like 9) react faster but give more false signals; longer periods (like 21) are smoother but slower to react
- It is a technical tool and does not account for company fundamentals, news, or quarterly results
Quick Recap
| Aspect | Detail |
| Scale | 0 to 100 |
| Default period | 14 days |
| Overbought zone | Above 70 |
| Oversold zone | Below 30 |
| Best used with | Trend lines, moving averages, volume |
Final Thoughts
As someone trading in the Indian markets, learning to read this indicator well can add real value to your decision-making process. It won’t predict the future with certainty. However, it gives a useful sense of momentum and possible turning points.
As in the case of any technical tool, it works best as part of a broader strategy rather than in isolation. Hence beginners should practice reading it on historical charts before applying it to live trades.
|
Also Read |
|
| Introduction to Technical Analysis | How to Buy and Sell Shares |
| Candlestick Chart Basics | |
