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什麼是布林通道(Bollinger Band)

Bollinger Bands: What They Are and How to Use Them

Bollinger Bands® help you identify sharp, short-term price movements and potential entry 什麼是布林通道(Bollinger Band) and exit points.

Flexible and visually intuitive to many traders, Bollinger 什麼是布林通道(Bollinger Band) Bands® can be a helpful technical analysis tool. Invented in 1983 by John Bollinger, they’re designed to help traders evaluate price action and 什麼是布林通道(Bollinger Band) a stock’s volatility.

Before we get to how they can do that, let’s talk about what they are and what they look like. A Bollinger Band consists of a middle band (which is a moving average) and an upper and lower band. These upper and lower bands are set above and below the moving average by a certain number of standard deviations of price, thus incorporating volatility. The general principle is that by comparing a stock’s position relative to the bands, a trader may be able to determine if a stock’s price is relatively low or relatively high. Further, the width of the band can be an indicator of its volatility (narrower bands indicate less volatility while wider ones indicate higher volatility).

Bollinger Bands typically use a 20-period moving average, where the “period” could be 5 minutes, an hour or a day. By default, the upper and lower bands are set two standard deviations above and below the moving average. However, traders can customize the number of periods in the moving average as well 什麼是布林通道(Bollinger Band) as the number of deviations.

Figure 1: Bollinger Band activity over the 什麼是布林通道(Bollinger Band) course of 20 days.

Bollinger Band activity over the course of 20 days.

Using Bollinger Bands

Before we discuss how to use Bollinger Bands, it’s important to note: When the price touches the upper band, it doesn’t necessarily mean that you should sell. Similarly, when the price touches the lower band, it doesn’t necessarily mean you should buy. In fact, take it from John Bollinger himself who 什麼是布林通道(Bollinger Band) said, “There is absolutely nothing about a tag of a band that in and of itself is a signal.”

Prices can “walk the band” during a strong down- or uptrend. This means that there are 什麼是布林通道(Bollinger Band) repeated instances of a price touching or breaking through the lower or upper band. That’s why you may not want to take action when the price touches either band—you might, instead, prefer to wait 什麼是布林通道(Bollinger Band) and look for chart patterns like the “double bottom,” a “classic M top,” or a “three pushes to high” formation. Let’s talk about these chart patterns more:

Double bottom

A double bottom occurs when there is a fall in price, followed by a rise, followed by another fall that is close to the previous low, and finally another rise.

To identify a double bottom, look for a price that has touched 什麼是布林通道(Bollinger Band) 什麼是布林通道(Bollinger Band) the lower band and wait to see where the next low occurs. A price that reacts and rises close to the middle band, followed by a second low inside the lower band, suggests that the 什麼是布林通道(Bollinger Band) price is positioned for an upward move—a good time for traders to buy.

Without the Bollinger Band, the stock could look like it 什麼是布林通道(Bollinger Band) is trending down on the second low, especially if the second low is lower than the first. But with the Bollinger Band, the second low may indicate that the stock could be preparing for an uptrend.

什麼是「布林通道」?又該怎麼獲利?一篇文搞懂布林通道設定方式!

布林通道進階操作

當價格接近下軌或在下軌以下,就是買進訊號,因為股價之後高機率上漲,但仍無法判斷長期趨勢。以高端疫苗(6547) 在 2021 年 5 月 ~ 2021 年 8 月為例:

當價格接近上軌或超出上軌時,則可以短期放空,因為股價高機率下跌,但仍無法判斷長期趨勢。同樣以高端疫苗(6547) 在 2021 年 5 月 ~ 2021 年 8 月為例:

布林通道的軌道寬度、均線時間都能根據自己的需求調整,例如:標準差調整成 1 倍或均線改成 60 日等等,可以根據自己的策略去選擇。

本文由 CMoney 團隊整理撰寫,未經授權請勿轉載!
( 首圖:shutterstock / 責任編輯:Ting / 更新:2022.04.22;本文內容純屬參考,並非投資建議,投資前請謹慎為上 )

Best Bollinger Bands Settings For Trading

Bollinger bands settings

Bollinger Bands is a technical analysis tool invented by John Bollinger to forecast the market using moving averages & standard deviation.

It’s purely based on mathematical concepts and is a widely used tool among retail traders.

If 什麼是布林通道(Bollinger Band) you don’t know the basics of the Bollinger bands tool, I highly recommend you read this article before reading this for better understanding.

In this article, you’ll learn about the best settings for the Bollinger 什麼是布林通道(Bollinger Band) bands indicator on intraday, scalping, and swing trading.

What are the Bollinger bands?

Bollinger bands consist of three bands.

  • Upper band
  • Middle band
  • Lower band

The middle band is a simple moving average. Moving average line plots the average closing value of the last specific number of candlesticks. It also acts as dynamic support or dynamic resistance line.

bollinger bands

The upper and lower band is the standard deviation of the moving average line. Standard deviation is the deviation of the price from 什麼是布林通道(Bollinger Band) the mean value. Because moving average line always attracts the price. Price always comes back to test the moving average line.

Which standard deviation value is the best in BBs?

As standard deviation is the price deviation from the moving average line, its value will be low in scalping and high in position trading. Because scalping is the fastest type of trading and position trading is the slowest type.

According to research,

  • With a 1.0 standard deviation, 65% of the price action happens within the Bollinger bands
  • With a 2.什麼是布林通道(Bollinger Band) 什麼是布林通道(Bollinger Band) 0 standard deviation, 95% of the price action happens within bands
  • In 什麼是布林通道(Bollinger Band) 3.0 standard deviation, 99% of the price action happens within bands

Optimal settings for Bollinger bands

The settings of Bollinger bands depend on the type of trading. For example, for intraday trading, Bollinger bands’ settings will be different compared to swing trading. If you are using the same settings for all types of trading, you are misusing it.

Bollinger bands settings

There are four major types of trading

  • Scalping
  • Intraday trading
  • Swing trading
  • Position 什麼是布林通道(Bollinger Band) 什麼是布林通道(Bollinger Band) trading

For each type of trading, there are different settings.

Bollinger bands settings for scalping

In scalping, the moving average line period should be close to 10, and the optimum standard deviation value will be 1.5.

Bollinger bands settings for day trading

In day trading, the period of moving the average line should be close to 20, and the optimum standard deviation value will be 2.

Bollinger bands settings for swing trading

Swing trading is considered the most profitable type because of more minor psychological effects. The moving average line in swing trading will be 50, and the standard deviation value will be 2.5.

Bollinger bands settings for position trading

Position trading is the long-term type of trading. The period of moving the average line in position trading will be 什麼是布林通道(Bollinger Band) close to 200, and the standard deviation value will be 2.5.

Table of different settings of Bollinger bands

Type of TradingStandard DeviationMoving Average Period
Scalping1.510
Day trading2.020
Swing trading2.550
Position trading2.5200

Conclusion

There is a whole reason 什麼是布林通道(Bollinger Band) behind the usage of the above settings. The Bollinger band is the best tool for beginners and intermediate traders to trade efficiently. You can also increase the probability of winning by adding price action with Bollinger bands.

I recommend you backtest the results by applying the 什麼是布林通道(Bollinger Band) above settings before using them on a live account.

什麼是「布林通道」?又該怎麼獲利?一篇文搞懂布林通道設定方式!

布林通道進階操作

當價格接近下軌或在下軌以下,就是買進訊號,因為股價之後高機率上漲,但仍無法判斷長期趨勢。以高端疫苗(6547) 在 2021 年 5 月 ~ 2021 年 8 月為例:

當價格接近上軌或超出上軌時,則可以短期放空,因為股價高機率下跌,但仍無法判斷長期趨勢。同樣以高端疫苗(6547) 在 2021 年 5 月 ~ 2021 年 8 月為例:

布林通道的軌道寬度、均線時間都能根據自己的需求調整,例如:標準差調整成 1 倍或均線改成 60 日等等,可以根據自己的策略去選擇。

本文由 CMoney 團隊整理撰寫,未經授權請勿轉載!
( 首圖:shutterstock / 責任編輯:Ting / 更新:2022.04.22;本文內容純屬參考,並非投資建議,投資前請謹慎為上 )