Bollinger Bands and Their Application in Cryptocurrency Trading

Trading Made Easy 2023-09-29 01:29:07

Cryptocurrency traders seek efficient technical analysis indicators to predict price movements and identify prevailing trends accurately. While there's a notion that intricate indicators with multiple lines, histograms, and various elements offer superior signals, this isn't always the case. Often, the traditional approach proves to be more effective and straightforward. One such time-tested and reliable technical indicator is Bollinger Bands.


Bollinger Bands consist of three lines that create a channel encompassing the price action. The middle line is a simple moving average (SMA), while the upper and lower lines are derived from the SMA and adjust based on price volatility. Traders employ Bollinger Bands to assess the current trend, gauge volatility levels, and anticipate potential trend reversals.


Understanding Bollinger Bands

Bollinger Bands stand among the most widely used technical indicators due to their precision in measuring volatility. They provide insights into whether prices are relatively high or low compared to previous closes. This indicator, initially developed by John Bollinger in the 1980s for analyzing stocks, has retained its status as a favored tool for price analysis. Its popularity extends into the cryptocurrency market, where volatility indicators play a crucial role.


Bollinger Bands consist of three distinct bands:


  • 1. The Middle Band: This is a Simple Moving Average (SMA).


  • 2. The Upper Band: It represents the SMA plus two standard deviations. This upper band measures the degree of variation from the middle band, allowing both upper and lower bands to expand and contract in response to price volatility.


  • 3. The Lower Band: This corresponds to the SMA minus two standard deviations.


By default, Bollinger Bands come with a 20-period Simple Moving Average (SMA) and two standard deviations for each of the upper and lower bands. The distance between the outer bands varies with changes in standard deviations. Consequently, the bands narrow during periods of market calm and widen when volatility increases.


However, these parameters are adjustable to cater to a trader's specific needs. For example, you can set a 15-period SMA with two and a half standard deviations for the bands.


If you're unfamiliar with standard deviations, they measure the spread of numbers relative to a specific value. For instance, setting the upper and lower bands at one standard deviation implies that approximately 68% of recent price movements fall within these bands. Conversely, with bands set at two standard deviations, around 95% of price movements within the tracked period are enclosed within the channel formed by the bands.


In addition to measuring price volatility, Bollinger Bands serve as a momentum indicator by helping traders identify overbought and oversold levels.


With its embedded SMA, Bollinger Bands function effectively as a trend-following indicator. While it is a versatile tool, combining it with other technical indicators can enhance its signaling capabilities.


Key Characteristics of Bollinger Bands

To effectively comprehend and utilize Bollinger Bands, it's essential to recognize its main attributes:


  1. Volatility Measurement: Bollinger Bands primarily serve as a gauge for price volatility, but they are also adept at identifying trends and levels of overbought and oversold conditions.


  1. Three-Line Structure: This indicator is comprised of three lines—an SMA with a default period of 20 and upper and lower bands, both set at two standard deviations from the SMA.


  1. Dynamic Volatility: Bollinger Bands exhibit dynamic behavior, automatically expanding as market volatility increases and contracting during periods of reduced volatility.


  1. Mean Reversion: Prices have a tendency to revert towards the middle of the bands. Consequently, when prices touch either of the bands, it is common to expect a rebound in the opposite direction. This characteristic makes Bollinger Bands particularly useful for swing traders.


  1. Breakout Signals: When the bands closely converge for an extended duration, it often precedes a breakout in either direction, signifying potential market shifts.


Exploring the Concepts of Bollinger Bounce and Bollinger Squeeze

Two of the paramount trading techniques offered by Bollinger Bands are known as the Bollinger Bounce and the Bollinger Squeeze. The former constitutes a strategy for identifying trend reversals, grounded in the notion that prices tend to rebound towards the middle whenever they touch one of the bands. Consequently, when the price contacts the upper boundary of the Bollinger Bands, traders often opt for short positions, and vice versa.


To provide context, envision the bands as dynamic support and resistance levels. The relevance of these bands becomes more pronounced on larger timeframes, rendering this strategy well-suited for swing traders who typically hold positions overnight.


The effectiveness of the Bollinger Bounce strategy is most pronounced during sideways trends when volatility is relatively low. Novices often overlook such market conditions, but this strategy can prove profitable, especially when the trend lacks clarity. However, it's important to abandon the Bollinger Bounce strategy when the bands start to expand, signaling the emergence of a new trend.


Conversely, during periods of low volatility, traders can employ the Bollinger Squeeze strategy. When the bands constrict or "squeeze" together, it signifies an impending breakout. If the price breaks above the upper band, traders initiate long positions, anticipating further upward movement. Conversely, if the price breaches the lower band, traders go short, expecting a continued downward trajectory.


While numerous trading systems leverage Bollinger Bands, these two strategies, the Bollinger Bounce and the Bollinger Squeeze, stand out as the most commonly utilized approaches.


The Significance of Bollinger Bands in Cryptocurrency Trading

Cryptocurrencies are known for their inherent volatility. These digital assets, being relatively new compared to traditional financial instruments, exhibit swift and pronounced responses to market events and large transactions. Consequently, the presence of a technical indicator that places a premium on volatility is instrumental in assisting cryptocurrency traders in comprehending price dynamics and enhancing their decision-making capabilities.


Take Bitcoin, the most prominent and mature cryptocurrency, for example. It has showcased extraordinary volatility, a trait less common in traditional financial assets. This volatility manifests on various timeframes and within individual trading sessions. For instance, in 2020, Bitcoin's price plummeted to less than $5,000 during the March market crash but subsequently surged to a remarkable all-time high of over $41,000 in early January 2021. This represents an astonishing 156.522% price differential.


Trading assets with such extreme volatility can be a formidable challenge, particularly for novice traders. To mitigate risks and make more informed decisions, employing indicators like Bollinger Bands proves invaluable in pinpointing precise entry and exit points.


Utilizing Bollinger Bands in Cryptocurrency Trading

Applying Bollinger Bands in cryptocurrency trading aligns closely with its use in traditional asset trading, such as forex or stocks. However, one should anticipate increased volatility, trading prospects, and signals when employing this indicator in the crypto market.


Here's how to configure Bollinger Bands based on your trading style:


  1. Short-term (Day Trading):
  •    Simple Moving Average (SMA) with a period of 10.
  •    Bands set at 1.5 standard deviations.


  1. Medium-term (Swing Trading):
  •    Use the default parameters, namely a 20-period SMA.
  •    Bands set at 2 standard deviations.


  1. Long-term (Position Trading):
  •    Employ a 50-day SMA.
  •    Bands set at 2.5 standard deviations.


As a general rule, when the bands contract during periods of low volatility, it's a signal to prepare for a breakout in either direction. However, it's advisable to await confirmation that the breakout indeed results in a new trend to avoid being caught by an isolated spike or drop. This principle underlies the Bollinger Squeeze strategy, which is particularly effective in the cryptocurrency realm.


In addition to the Bollinger Bounce and Squeeze strategies, cryptocurrency traders can also utilize Bollinger Bands to identify W-bottoms and M-tops, which are patterns visible on candlestick charts. These patterns resemble double bottoms and double tops.


For a valid W-bottom pattern, one should verify that the first low, typically below the lower band, is lower than the second low, which occurs within the bands. Once the cryptocurrency rebounds from the second low, traders open long positions.


Conversely, the M-top pattern is the inverse of the W-bottom. It forms when a rally concludes with a pullback followed by another attempt to breach the resistance established by the previous high. If the price fails to break above this resistance, a double top-like pattern emerges. The key criterion is that the first high must occur outside the bands, while the second high remains within the bands. When this pattern materializes on the chart, traders initiate short positions.


Day Trading with Bollinger Bands (Short-Term):

Given the prevalence of day trading among retail cryptocurrency traders, it's essential to understand how Bollinger Bands can be applied in both uptrends and downtrends:



  • Bollinger Bands can gauge the strength of an ongoing uptrend and signal potential reversals. In a robust uptrend, the price frequently touches the upper band, indicating the cryptocurrency's continued growth and bullish sentiment.


  • Should the price retrace but remain above the SMA before rebounding toward the upper band again, it signifies significant strength. Notably, the price should ideally avoid touching the lower band during an uptrend; doing so may signal a weakening trend and potential reversal.


  • Most day traders seek to capitalize on strong upward trends, exiting positions at the first signs of a reversal. Failure to establish a new high prompts traders to close their positions to minimize losses. Therefore, Bollinger Bands serve as a valuable tool for monitoring the strength or weakness of an uptrend and anticipating potential reversals.



  • In downtrends, Bollinger Bands help measure the strength of a bearish movement and identify potential trend reversals. In a robust downtrend, the price gravitates close to the lower band, indicative of sustained selling pressure.


  • When the price fails to establish new lows and begins to move along the lower bands, it suggests a loss of bearish momentum. This situation prompts short-sellers to exit their positions, anticipating a potential reversal.


  • In a bearish market, a strong signal of an impending reversal occurs if the price reaches or breaks above the upper band. Many traders prefer not to trade during downtrends, as most cryptocurrencies aim for long-term market expansion. Consequently, trading against the prevailing trend may be avoided, with traders monitoring bearish movements to identify opportunities to "buy the dip."

Variations of Bollinger Bands

In addition to standard Bollinger Bands, cryptocurrency traders have the option to utilize Bollinger Band variations, including Bollinger Bands Width and Bollinger Bands %B (percent bandwidth). Here, we will concentrate on the latter, as it represents the most widely used variation and encompasses the characteristics of the former.


Bollinger Bands %B serves as an indicator that quantifies the cryptocurrency's position relative to the bands. Therefore:


  • When %B exceeds 1, it indicates that the price surpasses the upper band.
  • %B equaling 1 signifies that the price aligns with the upper band.
  • When %B exceeds 0.50, it suggests that the price resides above the middle band.
  • A %B value below 0.50 indicates that the price falls below the middle band.
  • %B equal to zero signifies that the price corresponds to the lower band.
  • If %B falls below zero, it implies that the price descends beneath the lower band.


Considerations for Crypto Trading with Bollinger Bands

Bollinger Bands enjoy immense popularity among technical indicators for valid reasons, although it's crucial to remember that they, like any other indicator, cannot predict cryptocurrency prices. Instead, Bollinger Bands respond to real-time price movements but do not possess the ability to foresee future outcomes. They are essentially lagging indicators, particularly when based on a simple moving average, which relies on the average prices of recent periods. Your responsibility as a trader is to anticipate future price movements, with Bollinger Bands offering valuable hints in this endeavor.


Key Precautions to Keep in Mind


  1. Understanding Bollinger Bands Usage: It's essential to comprehend when and how to utilize Bollinger Bands to mitigate the risk of misinterpreting chart analysis.


  1. Differentiating Between Bollinger Squeeze and Bounce: Recognizing the distinction between a Bollinger Squeeze and a Bollinger Bounce is critical. During a squeeze, the sigma band indicates a potential reversal, whereas in a trending market, the sigma band can serve as a positive signal when touched. Achieving high accuracy in utilizing Bollinger Bands involves considering other indicators, such as moving averages and candlestick patterns.


  1. Examining Multiple Timeframes: Restricting your analysis to a single timeframe can limit your ability to accurately assess market trends. Generally, signals become more reliable with longer timeframes. If you are engaged in short-term trading and solely focus on shorter hourly charts, you may encounter false signals and noise. For instance, a downtrend on a daily or weekly timeframe might not be accurately reflected on an hourly chart, which could exhibit a significant uptrend. Assessing the broader picture across multiple timeframes enhances your trading insights.



Whether you are a novice or experienced crypto trader, Bollinger Bands remain a dependable and valuable tool in chart analysis, with a track record spanning decades. Properly employed, this indicator can help identify favorable entry and exit points in advance. For beginners, starting with the default settings is advisable, with adjustments made over time to align with your specific trading style.

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