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X_STUDY® Documentation

Money Flow Index (MFI)


The Money Flow Index (MFI) was developed by Gene Quong and Avrum Soudack. It uses both price and volume to measure buying and selling pressure.


Pivot = (High + Low + Close) / 3

Money Flow = Pivot * Volume

Money Ratio = Sum of Positive Money Flow / Sum of Negative Money Flow

MFI = 100 - (100/(1 + Money Ratio))