📊 RSI Indicator (Relative Strength Index)

📊 RSI Indicator (Relative Strength Index)

Part of Complete Stock Market Learning Series


📌 What is RSI?

RSI (Relative Strength Index) is a momentum indicator developed by J. Welles Wilder. It measures the speed and change of price movements and helps identify overbought and oversold conditions.

RSI moves between 0 to 100.

📊 RSI Formula (Basic Understanding)

RSI = 100 − (100 / (1 + RS))

  • RS = Average Gain / Average Loss
  • Default Period = 14

You don't need to calculate it manually — trading platforms calculate it automatically. Understanding interpretation is more important.

🔴 Overbought & Oversold Levels

  • Above 70 → Overbought Zone (Possible Reversal Down)
  • Below 30 → Oversold Zone (Possible Reversal Up)
  • 50 Level → Trend Strength Indicator

Important: Overbought does NOT always mean sell immediately. In strong trends, RSI can stay above 70 for long periods.

📈 RSI in Uptrend & Downtrend

  • In strong uptrend → RSI stays between 40–80
  • In strong downtrend → RSI stays between 20–60
  • 50 level acts as support/resistance in RSI

Professional traders use RSI with trend confirmation.

📊 Animated Example (Price + RSI)

50 70 30

RSI rising toward 70 indicates strengthening bullish momentum.

💡 RSI Trading Strategies

  • RSI Divergence (Price vs Indicator mismatch)
  • RSI 50 Level Break Strategy
  • RSI + Trend Line Combination
  • RSI + Support/Resistance Strategy

⚠ Common Mistakes

  • Buying just because RSI is below 30
  • Selling immediately above 70
  • Ignoring higher timeframe trend
  • Using RSI alone without confirmation

⚖ Important Note

RSI is a momentum indicator — not a prediction tool. Always combine RSI with price action, trend structure, and proper risk management. This content is for educational purposes only.


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