The Relative Strength Index (RSI), developed by J. Welles Wilder, is a momentum oscillator that measures the speed and change of price movements. The RSI oscillates between zero and 100. Traditionally the RSI is considered overbought when above sầu 70 & oversold when below 30. Signals can be generated by looking for divergences and failure swings. RSI can also be used lớn identify the general trkết thúc.

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How this indicator works

RSI is considered overbought when above sầu 70 & oversold when below 30. These traditional levels can also be adjusted if necessary to better fit the security. For example, if a security is repeatedly reaching the overbought màn chơi of 70 you may want to lớn adjust this level lớn 80.

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Note: During svào trends, the RSI may remain in overbought or oversold for extended periods.

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RSI also often forms chart patterns that may not show on the underlying price chart, such as double tops and bottoms & trkết thúc lines. Also, look for support or resistance on the RSI.In an uptrend or bull market, the RSI tends lớn remain in the 40 to lớn 90 range with the 40-50 zone acting as tư vấn. During a downtrend or bear market the RSI tends khổng lồ stay between the 10 to lớn 60 range with the 50-60 zone acting as resistance. These ranges will vary depending on the RSI settings và the strength of the security’s or market’s underlying trend.If underlying prices make a new high or low that isn"t confirmed by the RSI, this divergence can signal a price reversal. If the RSI makes a lower high và then follows with a downside move below a previous low, a Top Swing Failure has occurred. If the RSI makes a higher low và then follows with an upside move sầu above a previous high, a Bottom Swing Failure has occurred.


The RSI is a fairly simple formula, but is difficult khổng lồ explain without pages of examples. Refer to Wilder"s book for additional calculation information. The basic formula is:

RSI = 100 – <100 / ( 1 + (Average of Upward Price Change / Average of Downward Price Change ) ) >

Technical analysis focuses on market action — specifically, volume and price. Technical analysis is only one approach to lớn analyzing stocks. When considering which stocks to lớn buy or sell, you should use the approach that you"re most comfortable with. As with all your investments, you must make your own determination as lớn whether an investment in any particular security or securities is right for you based on your investment objectives, risk tolerance, & financial situation. Past performance is no guarantee of future results.