Close this search box.

Table of Contents

Money Flow Index (MFI)


The Money Flow Index (MFI) is a momentum indicator in technical analysis that measures the inflow and outflow of money into a security over a specific period. It uses both price and volume data to identify overbought or oversold situations in the market. It ranges from 0 to 100, with values over 80 indicating overbought conditions and those under 20 indicating oversold conditions.


Money Flow Index (MFI): Money – /ˈmʌni/Flow – /floʊ/Index – /ˈɪndeks/MFI – /ɛm/ /ɛf/ /aɪ/

Key Takeaways

  1. Indicator of Overbought or Oversold Conditions: The Money Flow Index (MFI) is a momentum indicator that is used to identify overbought or oversold conditions in a market. When the MFI is high, above 75-80, the market is considered overbought. When it’s low, below 20-25, the market is considered oversold. These overbought and oversold conditions often precede reversals or significant price corrections.
  2. Measurement of Volume: Unlike other momentum indicators, the MFI also takes into account the volume of traded shares. This allows it to measure the strength of money inflows and outflows in a specific security over a certain period. When the MFI rises, it indicates that the volume-weighted pressure is bullish and more money is flowing into a security. When it drops, the volume-weighted pressure is bearish and more money is flowing out of a security.
  3. Limitations of MFI: The MFI, like all technical analysis indicators, is not infallible and should not be used in isolation. It is better when utilized with other forms of analysis or indicators to confirm trading signals. False signals can often occur, especially during large price swings or periods of high market volatility.


The Money Flow Index (MFI) is a significant tool in business and finance as it represents a momentum indicator that employs both price and volume data to identify overbought or oversold signals in an asset’s price. By gauging money flow, the MFI generates a value between 0 to 100, a high value signifies an overbought condition, implying a potential reversal, while a low value either alludes to an oversold condition, suggesting a price bounce might transpire. Hence, through the interpretation of these values, financial analysts, traders, and investors can make a more informed decision, enriching their strategic portfolio construction, risk management, and investment performance.


The Money Flow Index (MFI) is used primarily as a tool to identify the strength of money flowing in and out of a security. It serves as an oscillator that incorporates both price and volume data, providing significant insights into market trends and investor sentiment. Used by traders and investors alike, MFI offers a measure of the market’s willingness to move prices and helps identify potential reversals in the market trend. Therefore, it’s often used as a predictor of an upcoming bullish or bearish market trend, which can prove beneficial for investors and traders to strategize their market moves.Moreover, the MFI can efficiently assist in spotting potential overbought or oversold conditions in a market. Overbought refers to a situation where buying pressures have been excessively high and may be about to start diminishing, indicating a potential drop in prices. In contrast, oversold suggests extreme selling pressure that may start easing soon, signaling a potential rise in prices. Hence, the MFI is not only a useful tool for identifying current market conditions but also helps in anticipating potential changes in buying and selling pressure, which is crucial for optimizing investment or trading strategies.


1. Example 1: Stock Trading: Let’s say a stock trader uses MFI to determine a good time to buy or sell shares of a company listed on the stock market. For instance, if MFI for a particular company’s shares falls below 20, it indicates that the stock is oversold and it might be a good time to buy. Conversely, if the MFI exceeds 80, it suggests the stock is overbought and it might be a good time to sell.2. Example 2: Forex Trading: In foreign currency exchange markets, a trader could utilize the MFI to predict swings in currency values. If the MFI of a certain currency pair, like the Euro and the U.S Dollar, falls below 20, it might indicate a potential increase in the value of the Euro against the Dollar in the future. Conversely, an MFI above 80 might suggest a decline in the Euro’s value against the Dollar.3. Example 3: Cryptocurrency Analysis: Crypto investors might use MFI to decide when to trade Bitcoin or other cryptocurrencies. If the MFI for Bitcoin dips below 20, it signifies that the cryptocurrency is oversold, representing a favorable buying opportunity. On the other hand, if the MFI goes beyond 80, it denotes that Bitcoin is overbought, signaling a possible selling opportunity.

Frequently Asked Questions(FAQ)

What is Money Flow Index (MFI)?

The Money Flow Index (MFI) is a technical indicator used by traders to measure the money flow in and out of a security. MFI ranges between 0-100, and it is often used to identify overbought or oversold conditions in a market.

How is the Money Flow Index (MFI) calculated?

The MFI is calculated using the security’s high, low, and closing prices, and the volume of trades. It is derived from the Relative Strength Index (RSI) formula and incorporates price and volume data.

How do traders interpret the Money Flow Index (MFI)?

When the MFI moves above 80, this is usually indicative that the security is becoming overbought and traders may consider selling. When the MFI dips below the 20 level, this may indicate the security is oversold and traders may consider buying.

What is the significance of the 50-level on the MFI?

The 50 level is seen as an equilibrium point by many traders. If the MFI crosses above 50, it indicates that the money flow is positive and buying pressure is increasing. Conversely, if the MFI crosses below 50, it suggests that the money flow is negative and selling pressure is increasing.

What is considered a good Money Flow Index (MFI) score?

It’s subjective and depends on market conditions and individual trading strategies. However, an MFI score above 80 typically suggests overbought conditions, while a score below 20 implies oversold conditions.

Do all traders use the Money Flow Index (MFI)?

Not all traders use MFI as it’s more common among those who trade based on technical analysis, but it’s widely recognized as a useful tool for assessing price trends and market conditions related to supply and demand.

What are the limitations of the Money Flow Index (MFI)?

As with any technical indicator, the MFI is not foolproof and may produce false readings. It may indicate an overbought situation when there is still a strong upward trend or an oversold situation when prices are still falling. Thus it’s wise to use the MFI in conjunction with other indicators.

Related Finance Terms

Sources for More Information

About Due

Due makes it easier to retire on your terms. We give you a realistic view on exactly where you’re at financially so when you retire you know how much money you’ll get each month. Get started today.

Due Fact-Checking Standards and Processes

To ensure we’re putting out the highest content standards, we sought out the help of certified financial experts and accredited individuals to verify our advice. We also rely on them for the most up to date information and data to make sure our in-depth research has the facts right, for today… Not yesterday. Our financial expert review board allows our readers to not only trust the information they are reading but to act on it as well. Most of our authors are CFP (Certified Financial Planners) or CRPC (Chartered Retirement Planning Counselor) certified and all have college degrees. Learn more about annuities, retirement advice and take the correct steps towards financial freedom and knowing exactly where you stand today. Learn everything about our top-notch financial expert reviews below… Learn More