RSI (Relative Strength Index) is a technical analysis indicator that measures the price momentum and speed of change of a financial asset. It is calculated by comparing the average increase and the average decrease, reflecting the overbought/oversold condition of the market. It can be used to identify trends, confirm trading opportunities and measure market sentiment, but has the limitations of being based on historical data, lagging and being sensitive to parameters. .
What is the RSI indicator?
RSI (Relative Strength Index) is a technical analysis indicator that measures the price momentum and speed of change of a financial asset. It was proposed by J. Welles Wilder in 1978.
How to calculate RSI
The calculation formula of RSI is:
RSI = 100 - 100 / (1 + RS)
Where,
- RS = average increase / average decrease
- average increase = the sum of the increase points in the past n days
- average decrease = past n The sum of days' falling points
The meaning of RSI
-
0-30: Oversold area, indicating that the price may have fallen too far.
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30-70: Neutral zone, indicating that the price trend is not obvious.
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70-100: Overbought area, indicating that the price may have risen too far.
Uses of RSI
RSI can be used in technical analysis to:
-
Identifying Trends: RSI values that persist in overbought or oversold areas usually indicate that the price trend may be reversing.
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Confirming Trading Opportunities: Divergence in the RSI (i.e., price making a new high or new low without a corresponding new high or low in the RSI) may indicate a trading opportunity.
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Measuring Market Sentiment: High or low values of RSI can reflect the sentiment of market participants, such as greed or fear.
Limitations of RSI
RSI, like other technical analysis indicators, has certain limitations:
- It is based on historical data and cannot predict the future.
- For rapidly volatile markets, RSI may produce lagging signals.
- RSI is sensitive to the set parameters (such as n days), and different parameters may produce different results.
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