The BW MFI indicator is a technical analysis tool that helps traders to understand the direction of the market’s trend, as well as identify overbought and oversold conditions. The BW MFI indicator is based on the Money Flow Index (MFI) and was developed by John Ehlers. The indicator aims to eliminate market noise by using a low-pass filter, which smoothest out price fluctuations, thereby providing a clearer picture of the market’s trend.
What is the BW MFI indicator?
The BW MFI indicator is a technical analysis tool that utilizes the Money Flow Index (MFI) to provide traders with a clearer indication of market trends. The indicator is based on a low-pass filter that helps to eliminate market noise and provides a clearer picture of market direction. The BW MFI indicator is available on various trading platforms, including MetaTrader 4 and 5.
Importance of understanding the BW MFI indicator
The BW MFI indicator is an important tool for traders as it helps to provide a clearer picture of market trends, thereby aiding in the development of effective trading strategies. The indicator also helps to identify overbought and oversold conditions, which are important indicators of potential price reversals. Understanding the BW MFI indicator is, therefore, essential for traders looking to develop a profitable trading strategy.
Brief history and development of the BW MFI indicator
The BW MFI indicator was developed by John Ehlers, a well-known technical analyst. The indicator is based on the Money Flow Index (MFI), which was developed by Gene Quong and Avrum Soudack in 1991. Ehlers modified the MFI to create the BW MFI indicator, which utilizes a low-pass filter to provide a clearer picture of market trends. The BW MFI indicator was first introduced in Ehlers’ book, “Rocket Science for Traders.”
Understanding the BW MFI indicator
Definition of Money Flow Index (MFI)
The Money Flow Index (MFI) is a technical analysis tool that measures the inflow and outflow of money into a security over a given period. The MFI is calculated by combining both price and volume data and is used to identify overbought and oversold conditions in the market. The MFI oscillates between 0 and 100, with values above 80 indicating overbought conditions and values below 20 indicating oversold conditions.
How the BW MFI indicator works
The BW MFI indicator works by using a low-pass filter to eliminate market noise, thereby providing a clearer picture of market trends. The low-pass filter works by removing high-frequency components from the price data, leaving only the low-frequency components that represent the market’s trend. The filtered data is then used to calculate the Money Flow Index (MFI), which is used to identify overbought and oversold conditions.
Calculation of the BW MFI indicator
The BW MFI indicator is calculated using the following formula:
BW MFI = (High + Low + Close + 2 x Close[1]) / 5 * Volume
Where:
- High = the high price for the period
- Low = the low price for the period
- Close = the closing price for the period
- Close [1] = the closing price for the previous period
- Volume = the volume for the period
The result of the calculation is a value that oscillates between 0 and 100.
Interpreting the BW MFI indicator readings
The BW MFI indicator readings can be interpreted as follows:
- Values above 80 indicate overbought conditions, which may be an indication that the price is due for a reversal.
- Values below 20 indicate oversold conditions, which may be an indication that the price is due for a reversal.
- Values between 20 and 80 indicate a neutral or trending market.
Trading signals from the BW MFI indicator
The BW MFI indicator can’t provide specific buy and sell signal thus it provides traders with various technical trading signals, including:
- Bullish divergence: When the price is making lower lows, but the BW MFI indicator is making higher lows, this may be an indication of a potential bullish trend.
- Bearish divergence: When the price is making higher highs, but the BW MFI indicator is making lower highs, this may be an indication of a potential bearish trend.
- Overbought condition: When the BW MFI indicator is above 80, this may be an indication that the price is due for a reversal.
- Oversold condition: When the BW MFI indicator is below 20, this may be an indication that the price is due for a reversal.

Trading strategies using the BW MFI indicator.
There are several trading strategies that traders can use when incorporating the BW MFI indicator into their trading. One common strategy is to look for divergences between the price and the BW MFI indicator. For example, if the price is making higher highs, but the BW MFI indicator is making lower highs, this may be an indication that the price is due for a reversal.
Another strategy is to look for crossovers of the BW MFI indicator with its signal line. When the BW MFI indicator crosses above its signal line, it may be an indication of a bullish trend, while a crossover below the signal line may indicate a bearish trend.
Identifying overbought and oversold conditions
The BW MFI indicator can also be used to identify overbought and oversold conditions. Values above 80 indicate overbought conditions, while values below 20 indicate oversold conditions. Traders can use these values as an indication of potential price reversals.
BW MFI indicator Pros & Cons
Pros
- One of the main advantages of the BW MFI indicator is its ability to eliminate market noise and provide a clearer picture of market trends. The low-pass filter used in the calculation of the BW MFI indicator helps to remove high-frequency components from the price data, leaving only the low-frequency components that represent the market’s trend, another advantage of the BW MFI indicator is its ability to identify overbought and oversold conditions in the market. Traders can use these values as an indication of potential price reversals.
Cons
- The BW MFI indicator has limitations, such as the potential to generate false signals in choppy or sideways markets. It is most effective in trending markets and may not provide reliable readings in markets without a clear trend. Additionally, the indicator relies on historical price data, and as a result, it may not accurately predict future price movements. Traders should use the indicator in combination with other technical analysis tools and market knowledge to make informed decisions.
Comparison with other indicators
The BW MFI indicator is similar to other technical analysis tools, such as the Relative Strength Index (RSI) and the Stochastic Oscillator. While these indicators may differ in their calculation and interpretation, they are all designed to provide traders with a clearer picture of market trends and identify potential price reversals.
Conclusion
The BW MFI indicator is a useful tool for traders looking to develop a profitable trading strategy. The indicator helps to eliminate market noise, provide a clearer picture of market trends, and identify overbought and oversold conditions. Traders should, however, be aware of the limitations of the indicator and use it in conjunction with other technical analysis tools and market knowledge. By understanding the BW MFI indicator and incorporating it into their trading strategy, traders can improve their chances of success in the market.

Self-confessed Forex Geek spending my days researching and testing everything forex related. I have many years of experience in the forex industry having reviewed thousands of forex robots, brokers, strategies, courses and more. I share my knowledge with you for free to help you learn more about the crazy world of forex trading! Read more about me.