kopyalanabilir formatta hazırlanmış açıklama:
Relative Strength Index (RSI)
Definition:
The Relative Strength Index (RSI) is a popular momentum oscillator used in technical analysis to measure the speed and change of price movements. RSI ranges between 0 and 100 and is primarily used to identify overbought or oversold conditions in a security, which may signal potential reversals or trend continuations.
RSI Formula:
RSI = 100 – [100 / (1 + RS)]
Where:
RS = Average Gain over N periods / Average Loss over N periods
The most commonly used period is 14 days.
Interpretation of RSI Values:
| RSI Value | Signal |
|---|---|
| 70 and above | Overbought – potential downward reversal |
| 30 and below | Oversold – potential upward reversal |
| 50 | Neutral – trendless or balanced momentum |
These thresholds can be adjusted depending on market volatility or the asset class.
Example:
If a stock has had mostly upward movement over the last 14 days with an average gain of $1.50 and an average loss of $0.50:
RS = 1.50 / 0.50 = 3
RSI = 100 – [100 / (1 + 3)] = 100 – (100 / 4) = 75
An RSI of 75 suggests the stock is overbought and might be due for a correction.
Why RSI Matters:
- Entry & Exit Points: Helps traders time their buys and sells
- Momentum Confirmation: Supports trend-following strategies
- Divergence Detection: RSI divergence from price trends can signal reversal
- Crossovers with 50-level: Indicates changes in bullish/bearish momentum
RSI vs. Other Indicators:
| Indicator | Focus | Type |
|---|---|---|
| RSI | Speed and magnitude of price change | Oscillator |
| MACD | Trend-following momentum | Indicator |
| Stochastic | Closing price vs. price range | Oscillator |
| Bollinger Bands | Price volatility | Envelope |
Limitations of RSI:
- False Signals: Especially in strong trending markets
- Not Predictive Alone: Should be used alongside other tools
- Lagging Nature: Based on historical data, not forward-looking
- Subjectivity: Thresholds may not apply universally across assets
Best Practices:
- Combine with volume analysis, support/resistance levels, or moving averages
- Use divergence signals (e.g., price rises but RSI falls) to spot trend weakness
- Apply longer or shorter RSI periods (e.g., 9, 21) for sensitivity adjustment
Related Terms:
- Momentum
- Technical Analysis
- Overbought
- Oversold
- MACD (Moving Average Convergence Divergence)
- Stochastic Oscillator
- Price Divergence
- Trend Reversal
- Chart Patterns
- Volatility
