Chart 9 shows 14-week RSI for SPY during the bull market from 2003 rsi indicator until 2007. RSI surged above 70 in late 2003 and then moved into its bull market range (40–90). There was one overshoot below 40 in July 2004, but RSI held the 40–50 zone at least five times from January 2005 until October 2007 (green arrows).

How to Use the RSI for Trend Identification?

Stochastic, more sensitive to immediate price changes, often produces more frequent signals, making it useful in volatile, sideways markets. RSI, smoother and less prone to fluctuations, provides fewer but potentially more reliable signals, making it better for identifying and confirming longer-term trends. Unlike RSI divergences and positive-negative reversals, swing rejections or failure swings are independent of price action, focusing solely on RSI for signals. Traders typically interpret the RSI line moving below the overbought line or above the oversold line as a signal to buy or sell.

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In a strong downtrend, the RSI ranges from 10 to 60, with the range serving as resistance. The neutral zone around 50 indicates a balanced market, akin to a “Goldilocks” scenario—not too bullish or bearish. When the value exceeds 50, it suggests that gains are outpacing losses, hinting at an upward trend. Conversely, a value below 50 indicates that losses are surpassing gains, signaling a downward trend. Although the Relative Strength Index (RSI) is not flawless, it serves as a valuable instrument for spotting potential market movements. The RSI is displayed as an oscillator that is visible on a separate window of the chart.

Cardwell’s trend confirmations

Short-term traders sometimes use 2-period RSI to look for overbought readings above 80 and oversold readings below 20. The moving average convergence divergence (MACD) is another trend-following momentum indicator that shows the relationship between two moving averages of a security’s price. The MACD is calculated by subtracting the 26-period exponential moving average (EMA) from the 12-period EMA. As with most trading techniques, this signal will be most reliable when it conforms to the prevailing long-term trend. Bearish signals during downward trends are less likely to generate false alarms.

A value above 50 generally indicates bullish momentum, while a value below suggests bearish momentum. Traders use RSI in various ways, including identifying overbought and oversold conditions, confirming trends, and spotting possible reversals via divergences. They also use it with several other indicators, including moving averages and Bollinger Bands, to provide stronger signals. When the RSI is above 70, it generally indicates overbought conditions; when the RSI is below 30, it indicates oversold conditions.

Use Buy and Sell Signals That Fit Trends

Conversely, bullish divergences can appear in a strong downtrend, yet the downtrend continues. Chart 6 shows the SPDR S&P 500 ETF (SPY) with three bearish divergences and a continuing uptrend. These bearish divergences may have warned of a short-term pullback, but there was clearly no major trend reversal. The traditional overbought and oversold levels can be adjusted to better fit the security or analytical requirements. Raising the overbought threshold to 80 or lowering the oversold threshold to 20 could reduce the number of overbought/oversold readings.

The standard RSI calculation typically uses a 14-period time frame, but you can adjust this to better suit your trading horizon. Using a shorter period, like 9 or 7, will make the RSI more responsive to recent price changes. Traditionally the RSI adopts a 14 period setting which means it looks at price changes over the last 14 trading periods. Now, I say periods because if you are using a daily chart the RSI would represent the last 14 days but on a 1-hour chart the RSI setting will correspond to 14 one-hour candlesticks.

From oversold levels, RSI moved above 70 in mid-September to become overbought. Despite this overbought reading, the stock did not decline; instead, it stalled for a couple weeks and then continued higher. This chart features daily bars in gray with a one-day SMA in pink to highlight closing prices (as RSI is based on closing prices).

The RSI is a momentum oscillator that’s widely used in technical analysis of stocks and commodities to identify changes in momentum and price direction. The signals produced by both indicators are similar although not exactly the same. Some traders like to add both indicators to their analysis and wait for signals to align for extra confirmation before making their trading decisions. Other traders may prefer to use one indicator or the other to avoid duplication in their analysis. True reversal signals are rare and can be difficult to separate from false alarms. A false positive, for example, would be a bullish crossover followed by a sudden decline in a stock.

In essence, the MACD works by smoothing out the security’s recent price movements and comparing that medium-term trend line to another trend line showing its more recent price changes. 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. The RSI indicator is a momentum indicator used in technical analysis that measures the speed of an asset’s price changes.

Once we understand what the RSI does, we can see that overbought and oversold and NOT signals that indicate that price will turn. The uptrend can continue for a period with RSI overbought, while the downtrend can continue for a period with RSI oversold. Beyond trend indicators, traders also integrate RSI with Bollinger Bands, support and resistance levels, or volume analysis to enhance decision-making.

In fact, notice that pullbacks to this zone provided low risk entry points to participate in the uptrend. The bullish divergence formed with eBay moving to new lows in March and RSI holding above its prior low. RSI reflected less downside momentum during the February-March decline. Divergences tend to be more robust when they form after an overbought or oversold reading. On the other hand, a “good RSI number” could also refer to RSI levels.

Divergence

It is preferable to witness this occurs when the RSI is in overbought territory. We have just discovered that the RSI identifies strong trending price movements when it moves at the extremes. And with this knowledge, the RSI can be used when it comes to support and resistance, and breakout trading. The screenshot below shows a strong resistance level marked in black. The RSI compares the average gain and the average loss and analyses how many of the past 14 candles were bullish versus bearish and it also analyses the candle size of each candlestick. Wilder regarded failure swings as strong standalone signals of trend changes, and they remain a valuable technique.

Select RSI from the Indicator dropdown, select the Parameter and the position (above, below, or behind the underlying price plot). Placing RSI directly on top of the price plot accentuates the movements relative to price action of the underlying security. You can apply “advanced options” to smooth the indicator with a moving average or add a horizontal line to mark overbought or oversold levels.

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