This scan reveals stocks whose Bollinger Bands just expanded rapidly after being contracted for 5 or more days. If you wish to dive into each sector, click on the sector heading (e.g. Technology). This allows you to view all stocks within a sector that have wide or narrow BandWidths. We are starting with the Bollinger Bands ® contraction because a contraction often foreshadows a trend change or a trend continuation and is, therefore, the first important signal. Typically, bandwidth parameters will match the user’s preferred Bollinger Band parameters.

For example, an eight- to 12-month chart will show BandWidth highs and lows over a significant timeframe. BandWidth is considered narrow as it approaches the lows of this range and wide as it approaches the high end. The Bollinger Bands ® indicator makes use of two concepts from statistics, the so-called confidence interval, and the normal distribution. With a standard deviation of 2, we would say that 95% of all observed price points should fall within the Bollinger Bands®.

• Bollinger Bands are one of the most versatile and powerful technical indicators available to traders today.
• While not guaranteed reversal signals, they often indicate that the current move may be overextended and due for at least a temporary reversal.
• I often plot both indicators on the same chart to look for convergence between their signals.
• Predictive of breakout directions, it guides traders in harnessing market volatility to their advantage.
• The tool is premised on the idea that prices tend to remain within the bands’ upper and lower limits.
• To calculate the bands, decide on the number of periods for the SMA and standard deviations for the upper and lower bands.

Combining Bollinger Bandwidth with Other Technical Indicators

Traders monitor squeezes closely since they suggest the market is building energy for a significant change. The longer the squeeze, the more potent the subsequent breakout is expected to be. This is based on the principle that periods of low volatility are frequently followed by periods of high volatility. The widening of the bands could signal the beginning of a substantial price trend. As volatility increases, the chance of a significant and sustained price move in one direction also increases.

The Complete Ichimoku Cloud Trading Strategy: Ultimate Guide to the TradingView Indicator

Bollinger Bands, a popular tool among investors and traders, help gauge the volatility of stocks and other securities to determine if they are over- or undervalued. Developed in the 1980s by financial analyst John Bollinger, the bands appear on stock charts as three lines that move with the price. The center line is the stock price’s 20-day simple moving average (SMA). The upper bollinger bands bandwidth and lower bands are set at a certain number of standard deviations, usually two, above and below the middle line. Bollinger bandwidth is a technical indicator that measures the width of the Bollinger Bands. The Bollinger Bands are a volatility indicator that is used to measure the standard deviation of price changes over a certain period of time.

• Traders monitor squeezes closely since they suggest the market is building energy for a significant change.
• This is because the asset is priced higher than its typical valuation range, indicating a potential reversal or slowdown in momentum.
• Try 9–12 SMA and two standard deviations for better responsiveness, which is part of best settings for Bollinger Bands indicator in scalping.
• The default parameters (20,2) are based on the default parameters for Bollinger Bands.
• If you are a visual learner, you can watch the full Bollinger Bands Trading course on YouTube here.

Finally, keep in mind that the Bollinger bandwidth is just one tool that can be used to measure market volatility. There are other indicators out there that can provide complementary or even conflicting information. As with any technical indicator, it’s important to use the Bollinger bandwidth in conjunction with other technical and fundamental analysis tools in order to get a complete picture of what’s going on in the market.

Interpreting Expanding Bollinger Bands

It is a good measure of market volatility and can be used to identify potential trend reversals. When the Bollinger Bandwidth is narrow, it means that the market is not very volatile and may be due for a move. When the Bollinger Bandwidth is wide, it means that the market is very volatile and may be due for a reversal. Bollinger BandWidth (BBW) uses the given calculation and outputs a Percentage Difference between the Upper Band and the Lower Band. What needs to be understood however is that a trader cannot simply look at the BBW value and determine if the Band is truly narrow or not. The significance of an instruments relative narrowness changes depending on the instrument or security in question.

BandWidth also rose as prices moved sharply in one direction and Bollinger Bands widened. The screenshot below shows that the price is in an overall down-trending market phase because the price kept pushing into the lower bands. Now, the Bollinger Bands ® started narrowing and the price even reached the higher Bollinger Bands ®. The reaction around the higher band can tell us a lot about the market behavior. In this example, the market just briefly poked above the higher Bollinger Bands ® and then immediately was rejected. Such a quick rejection move can be seen as a rejection of the bullish buying attempt.

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The rationale is that if the price has moved down to the lower band, it might rebound toward the middle band or higher, especially in a ranging market without a strong downtrend. Just as touching the upper band signals an increase in volatility, the price reaching the lower band indicates greater volatility in the context of a downward move. However, when the bands narrow after a period of wide fluctuation, there’s decreased volatility, which might mean a significant price move as the price consolidates. In the calculation of the Bollinger Bands Width indicator, the moving average is used to divide the absolute difference between the upper and lower Bollinger bands so as to normalize the value to an oscillator. Mean-reversion traders, on the other hand, may combine it with momentum oscillators, such as the RSI or stochastic, which show overbought/oversold conditions and reversal momentum.

As you can see, the BTC/USD pair formed a double-top at 44,891 and a chin at 41,460. When the price reaches or goes above the upper band, this indicates increased volatility. Another strategy is “Bollinger Bounce,” based on prices returning to the middle band. Traders may buy or sell based on the rebound from the upper or lower bands toward the middle band, especially in a ranging market.

Determining the state of max bandwidth solely by observing the Bollinger Bands can be challenging, but BandWidth provides a clear understanding at a glance. At the same time, it is worth noting that the indicator can remain in a squeeze zone for an extended period of time. Like the Average True Range, the indicator tells you whether the market is volatile or not. With this information, you can then move ahead to open trades or anticipate moves. The tightening of Bollinger Bands could also mean there’s no consensus among market participants about the future direction of the price.

Bollinger Bands ® Trend-Following

Notably, this visualization serves as a pivotal component in the identification of market phases, ranging from the low-volatility ‘squeeze’ to high-volatility expansions indicative of active or trending markets. The width of the upper and lower bands of the Bollinger Bands can be assessed by simply looking at them. For a more accurate understanding of market conditions, you can use the technical indicator of BandWidth, which is based on the Bollinger Bands.

Beyond serving as a mere charting tool, Bollinger Bands encapsulate the fluctuating landscape of market prices by providing a statistical view of an asset’s trading range. This understanding forms the bedrock for performing a reliable Bollinger Bandwidth calculation and contributes to an analytic foundation for deeper financial insights. Besides Bollinger Bands, you can also explore other tools such as the correlation tool, and currency strength tool. By incorporating these technical analysis tools as part of your trading plan, you can improve your trading performance.

The practicality of Bollinger Bands Bandwidth lies in its capacity to serve as a dynamic gauge of market exuberance or fatigue, conditions often indicative of impending price movements. Knowledgeable utilization of this indicator can significantly improve market strategies, amplifying the probabilities of successful trading outcomes. Predictive of breakout directions, it guides traders in harnessing market volatility to their advantage. Option traders and investors use Bollinger Bands to assess market volatility and identify potential entry and exit points. The tool is premised on the idea that prices tend to remain within the bands’ upper and lower limits.

After the push outside the lower Bollinger Bands ®, the trend continued to the downside and the price stayed very close to the lower band. Strong continuation pushes below the lower band confirm the trend direction. In simple terms, we would say that 95% of all the price action happens in between the Bollinger Bands®.

This guide will walk you through everything you need to know about Bollinger Bands, including how to interpret them and how to use them in your trading. The displaced moving average is a regular simple moving average, displaced by a certain amount of periods. The chart below shows Alaska Airlines (ALK) with a squeeze in mid-June. After the April–May decline, ALK stabilized in early June as Bollinger Bands narrowed. In other words, the width of the bands is equal to 10% of the middle band.