What is RSI?

The RSI (Relative Strength Index) is a technical indicator that measures the speed and change of price movements of stocks or other assets. It was created by J. Welles Wilder and ranges from 0 to 100. RSI helps traders identify whether the market is overbought or oversold, which can signal a potential price reversal.

  • A value above 70 suggests the asset may be overbought.
  • A value below 30 suggests the asset may be oversold.
  • A value around 50 indicates a neutral market.

The most common RSI setting is a 14-period lookback.

How to interpret RSI in swing trading?

1. Trading with the trend – using pullbacks

In a strong uptrend, watch for RSI to drop into the 30–40 zone and then start turning upward. This often signals a pullback, which can be a good entry opportunity in the direction of the trend.

Example: The stock is sharply rising, RSI dips to 35, the price pulls back slightly to support, then resumes upward movement. Entering a long position here can be effective.

2. Trading against the trend – mean reversion

If RSI is above 70, it may indicate the market is overbought and due for a correction or reversal. Conversely, RSI below 30 suggests oversold conditions and a possible rebound. This strategy works best in sideways markets or when price moves within a tight range.

Warning: Trading against the trend is riskier and requires precise timing and confirmation from other indicators or price action.

3. RSI divergence

Another useful signal is called divergence:

  • When price makes new highs but RSI forms lower highs, this may indicate weakening momentum and a potential trend reversal.
  • Conversely, if price makes lower lows but RSI forms higher lows, it could signal a coming upward reversal.

How to implement RSI into your swing trading?

  1. Choose an asset with a clear trend.
  2. Watch RSI values:
    • For buying in an uptrend, look for RSI around 30–40 with confirmation from price reversal.
    • For selling (short) in a downtrend, look for RSI above 60–70 with confirmation of reversal.
  3. Use stop-loss orders near support or resistance levels.
  4. Set realistic profit targets (e.g., risk-to-reward ratio 1:2 or 1:3).

Summary

RSI ValueMeaningRecommended Action
Above 70Overbought marketConsider exiting or shorting
30–40Pullback in trendEnter position with trend
Below 30Oversold marketPossible rebound – buy signal
Around 50Neutral zoneWait for clear signal

RSI is a great tool that can help you better time your entries and exits in swing trading. However, always combine it with other indicators and practice proper risk management.