In the chart above, the RSI broke down through the trendline​​ support. When the RSI moved higher back to the trend line, it offered an opportunity to short sell Apple shares. The average gain is the average of how much the price has increased from each of its low points within a time period. Conversely, the average loss is how much the price has gone down from each of its highs. The RSI tool on Liquid will do all these calculations for you, but it’s always good to understand the derivation.

RSI trading strategies can help traders to identify and take advantage of the best intraday opportunities in both ranging and trending markets. Contrary to popular belief, the Relative Strength Index is a leading indicator. This quality can be observed by using trendlines on the RSI chart and trading its break. When the RSI is rising, an upward trendline is drawn by connecting two or more lows and projecting the line into the future. Similarly, when the RSI is falling, a downward trendline is drawn by connecting two or more highs and projecting the line into the future. A break of an RSI trendline precedes an actual price reversal or continuation in the market.

MMM broke resistance a few weeks later and RSI moved above 70. Despite weaker momentum with a lower low in RSI, MMM held above its prior low and showed underlying strength. RSI is an extremely popular momentum indicator that has been featured in a number of articles, interviews and books over the years. In particular, Constance Brown’s book, Technical Analysis for the Trading Professional, features the concept of bull market and bear market ranges for RSI.

These could also be used to determine how extreme the reading appears to have become. For example, Apple shares have been overbought six times in the past five years and oversold 13 times. If we assume a 14-day period, a RSI with forexbox zero value would mean that prices moved lower in all 14 periods. This means that there are no gains to measure and the RSI by default has a value of zero. The RSI, on the other hand, is 100 if all 14 periods experience gains.

We calculate the Initial Average Loss by summing all the price losses over the last 14 days and then dividing by 14; loss is always a positive number because it reflects a quantity. The level of the RSI is a measure of the stock’s recent trading strength. 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 to the magnitude of the move. The RSI provides signals that tell investors to buy when the security or currency is oversold and to sell when it is overbought.

Chart 10 shows 14-day RSI for the US Dollar Index ($USD) during its 2009 downtrend. RSI moved to 30 in March to signal the start of a bear range. The zone subsequently marked resistance until a breakout in December. A bearish failure swing forms when RSI moves above 70, pulls back, bounces, fails to exceed 70 and then breaks its prior low. It is basically a move to overbought levels, followed by a lower high beneath those levels.

rsi indicator

There are several important factors to consider when using the Relative Strength Index indicator, such as the settings, the score , and the bullish/bearish divergences. However, one should always keep in mind that no technical indicator is 100% efficient – especially if it is used alone. Therefore, traders should consider using the justforex along with other indicators in order to avoid false signals. The Relative Strength Index is a TA indicator developed in the late 1970s as a tool that traders could use to examine how a stock is performing over a certain period.

Example RSI calculation

She is always “sniffing the wind” for the latest trends and directions, and keeping her readers abreast of these developments. Commodity and historical index data provided by Pinnacle Data Corporation. Unless otherwise indicated, all data is delayed by 15 minutes. The information provided by, Inc. is not investment advice. RSI with recommended parameters and its day-to-day optimization was tested and compared with other strategies in Marek and Šedivá .

This means when the RSI indicator is “oversold”, it presents buying opportunities in the stock market since the trend is likely to continue higher. At the same time, you know the stock market is in a long-term uptrend and most pullbacks would lead to a resumption of the trend. However, just because the stock market is in a long-term uptrend doesn’t mean it goes up every day.

  • As a result, it can be a powerful tool for determining trend reversals.
  • The relative strength index is a technical indicator used in the analysis of financial markets.
  • Welles Wilder and detailed in his book New Concepts in Technical Trading Systems.

You can also adjust the style settings, like line colour and weight. By using another tab of configuration window, you can change parameters of the levels from 30 and 70 to 20 and 80. You can also add new levels should your trading strategy require so. The RSI indicator is a momentum indicator used in technical analysis that measures the speed of an asset’s price changes.

For example, in the Apple chart, the purple arrow shows a situation where prices hit a new lower low but the RSI does not make a lower low. Prices are still on the decline, but negative momentum has decelerated. The reverse could also occur, where prices are breaking out, but the RSI fails to make fresh highs. This reflects a situation where positive momentum is decelerating.

Market Indexes

In stocks, the relative strength, or RS, is the ratio of higher closes to lower closes, and the RSI is the ratio of higher closes to overall closes. The RSI is typically based on a 14-day time frame with high values being 70 or above, and low values being 30 or below. Levels such as 80 or 20 indicate a stronger trend in upward or downward momentum, respectively. Taking the prior value plus the current value is a smoothing technique similar to that used in calculating an exponential moving average. This also means that RSI values become more accurate as the calculation period extends. SharpCharts uses at least 250 data points prior to the starting date of any chart when calculating its RSI values.

This technical instrument consists of a single line and two levels set by default. Vertical axis range of the indicator is set to 1 to 100 showing extremality of current price against its previous values. The RSI is not as reliable in trending markets as in trading ranges. In fact, most traders accept that the signals given by the RSI in strong upward or downward trends often can be false. Because it measures the speed and size of an asset’s momentum, changes in the RSI along with changes in the price chart can be a powerful indicator of trend reversals. However, it isn’t able to tell investors exactly when those reversals will take place and what those price changes will be.

These regions correspond to very high or very low values of RSI. For instance, in a strong uptrend it may be better to use 80 as the borderline value. Because the RSI is typically used to detect overbought and oversold markets some traders feel it can’t be used in a trending market, but nothing could be further from the truth.

It can also be used across daily and forward contracts for spread bets and contracts for difference . Traditionally, the Relative Strength Index is considered to signal overbought conditions when above 70 and oversold conditions when under 30. The levels can be adjusted, however, to better fit the price movement of a specific security a trader is watching. Andrew Cardwell developed positive and negative reversals for RSI, which are the opposite of bearish and bullish divergences.

rsi indicator

They are also periods when the RSI readings are likely to be extremely low. In this sense, the RSI can be viewed as a gauge of whether a lot of selling has happened in the market. We would call very low RSI levels “oversold” as there might not be more selling left.

Cutler’s RSI

The stock moved to new highs in September-October, but RSI formed lower highs for the bearish divergence. The subsequent breakdown in mid-October confirmed weakening momentum. RSI is considered overbought when above 70 and oversold when below 30. These traditional levels can also be adjusted to better fit the security or analytical requirements. Raising overbought to 80 or lowering oversold to 20 will reduce the number of overbought/oversold readings. Short-term traders sometimes use 2-period RSI to look for overbought readings above 80 and oversold readings below 20.

According to Wilder, RSI is considered overbought when above 70 and oversold when below 30. Signals can also be generated by looking for divergences, failure swings and centerline crossovers. Welles Wilder, is a momentum oscillator that measures the speed and change of price movements.

Positive-Negative Reversals

A divergence is when the RSI goes in the opposite direction from the price chart. The Relative Strength Index predicts price movements of an asset within a specified period of time. It’s an excellent tool when you want to have a firmer grasp on what your asset will do and make decisions accordingly. The popular Relative Strength Index momentum oscillator was developed by J. Welles Wilder and detailed in his book New Concepts in Technical Trading Systems.

According to Wilder, the RSI is overbought when the index has a reading above 70, and it is oversold when it has a reading below 30. In addition to overbought and oversold levels, the RSI can also introduce signals by looking for divergence, failure swings and centreline crossovers. When looking at how to use the RSI indicator for day trading, it is important to remember that day trading involves buying or selling underlying assets within the same trading day. Effective day trading is not merely about quantity but rather about quality (taking the best high probability short-term trades).

During trends, the RSI readings may fall into a band or range. During an uptrend, the RSI tends to stay above 30 and should frequently hit 70. So if an economy progresses over time, it will be reflected in the stock market with higher asset prices. The average gain/loss can be manipulated by the RSI settings.

Using RSI With Trends

The remaining seven days all closed lower with an average loss of −0.8%. In addition to the basic 70/80 or 30/20 readings, traders also watch for divergence between price movement and the value of the RSI. When price hits a new low or high that isn’t supported by a corresponding new low or high in the RSI reading, this forex trading vs stock trading can indicate an impending price reversal in the market. These guidelines can help traders determine trend strength and spot potential reversals. For example, if the RSI can’t reach 70 on several consecutive price swings during an uptrend but then drops below 30, the trend has weakened and could be reversing lower.