MFI: Money Flow Index

In joshuaulrich/TTR: Technical Trading Rules

Money Flow Index

Description

The MFI is a ratio of positive and negative money flow over time.

Usage

MFI(HLC, volume, n = 14)

Arguments

HLC	Object that is coercible to xts or matrix and contains High-Low-Close prices. If only a univariate series is given, it will be used. See details.
volume	Vector or matrix of volume observations corresponding to HLC object.
n	Number of periods to use.

Details

Money Flow (MF) is the product of price and volume. Positive/negative MF occur when today's price is higher/lower than yesterday's price. The MFI is calculated by dividing positive MF by negative MF for the past n periods. It is then scaled between 0 and 100.

MFI is usually calculated using the typical price, but if a univariate series (e.g. Close, Weighted Close, Median Price, etc.) is provided, it will be used instead.

Value

A object of the same class as HLC and volume or a vector (if try.xts fails) containing the MFI values.

Note

Divergence between MFI and price can be indicative of a reversal. In addition, values above/below 80/20 indicate market tops/bottoms.

Author(s)

Joshua Ulrich

References

The following site(s) were used to code/document this indicator:
https://www.fmlabs.com/reference/default.htm?url=MoneyFlowIndex.htm
https://www.linnsoft.com/techind/money-flow-index-mfi
https://school.stockcharts.com/doku.php?id=technical_indicators:money_flow_index_mfi

See Also

See OBV and CMF.

Examples

 data(ttrc)
 mfi <- MFI(ttrc[,c("High","Low","Close")], ttrc[,"Volume"])

joshuaulrich/TTR documentation built on June 14, 2025, 4:45 a.m.