Relative Strength Index RSI Meaning, Formula, Calculation

what is relative strength index

An overbought asset tends to be indicative of recent or short-term price movements. As such, there’s an expectation that the market will see a correction in the price in the near term. Overbought assets are generally considered suitable for sale. Market statisticians and traders use the RSI with other technical indicators to identify opportunities to enter or exit a position. Traders can then base their buy and sell decisions on whether the short-term trend line rises above or below the medium-term trend line. If the downtrend is unable to reach 30 or below and then rallies above 70, that downtrend has weakened and could be reversing to the upside. Trend lines and moving averages are helpful technical tools to include when using the RSI in this way.

what is relative strength index

The slope of the RSI is directly proportional to the velocity of a change in the trend. The distance traveled by the RSI is proportional what is relative strength index to the magnitude of the move. Divergence occurs when prices move in the opposite direction from an indicator like an oscillator.

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Oscillators are technical indicators that vary over time between two main points and determine market conditions. Thus, they show if the market is overbought or oversold. Unlike RSI divergences and positive-negative reversals, swing rejections or failure swings are independent of price action, focusing solely on RSI for signals. On the other hand, oversold defines a period with a substantial and consistent downward move in price over time without much pullback. The term refers to a condition where a security has traded well below its typical value metrics and has the potential for a price bounce.

what is relative strength index

The formula for theMACDline is 26-period EMA − 12-period EMA. After the MACD line calculation, a 9-day EMA “signal line” will be plotted on the MACD line.

RSI meaning

Some traders interpret that an oversold currency pair is an indication that the falling trend is likely to reverse, which means it’s an opportunity to buy. Relative Strength Index, or RSI, is a popular indicator developed by a technical analyst named J. Welles Wilder, that helps traders evaluate the strength of the current market. The level of the RSI is a measure of the stock’s recent trading strength.

  • Trend lines and moving averages are helpful technical tools to include when using the RSI in this way.
  • This guide should not be considered investment advice, and investing in gold CFDs is done at your own risk.
  • The value of investments may fluctuate and as a result, clients may lose the value of their investment.
  • According to Wilder, divergences signal a potential reversal point because directional momentum does not confirm price.
  • In the chart above, the RSI broke down through the trendline​​ support.
  • There is generally no RSI formula that can be relied on to determine when the rebound will occur.

The only setting you should change is the period of the index. Forex traders mostly use the 9 period for smaller timeframes and the 25 period for bigger timeframes. Nevertheless, there are indicators with more and less accurate signals. So, the Relative Strength Index is the one that gives strong signals. Basically, Bollinger Bands strategy involves trading for reversals.

Spotting Trend Reversals With RSI Divergences

For example, if the RSI can’t reach 70 on several consecutive price swings during an uptrend but then drops below 30, the https://www.bigshotrading.info/ trend has weakened and could be reversing lower. The RSI is not as reliable in trending markets as in trading ranges.

  • Trends are incredibly powerful and driven by market momentum.
  • Traders who see indications that a security is overbought may expect a price correction or trend reversal.
  • The RSI above 70 is considered overbought, and below 30 is considered oversold.
  • Traders can also watch for a large divergence between price action and the Relative Strength Index reading.
  • Comparing these two readings, an investor may consider an RSI value of 29.6 as a buying signal resulting from the increase in the strong selling.
  • Bullish divergence occurs when an asset reaches a new low in price, and the RSI value does not.

Wilder’s formula normalizes RS and turns it into an oscillator that fluctuates between zero and 100. In fact, a plot of RS looks exactly the same as a plot of RSI. The normalization step makes it easier to identify extremes because RSI is range-bound. Assuming a 14-period RSI, a zero RSI value means prices moved lower all 14 periods and there were no gains to measure.