Composite Money Flow (MFI + CMF + OBV z-score)

Composite Money Flow gives a single, easy-to-read readout of buy/sell pressure by combining three complementary flows:

MFI (Money Flow Index) — price × volume momentum, native 0..100

CMF (Chaikin Money Flow) — accumulation/distribution across the bar (≈ −1..+1)

OBV z-score — manual OBV (cumulative signed volume) standardized, then squashed to −100..+100

All three are normalized to the same scale (−100..+100) and combined with user-set weights to form a composite Money Flow Score plus a Signal (SMA). Use thresholds to flag strong accumulation/distribution and alerts for timely notifications.

What you get

Money Flow Score (−100..+100) with color change at zero

Signal line (SMA) to smooth whipsaw

Upper/Lower thresholds (defaults +50 / −50) with optional background shading

Component lines (optional) to see each contributor (MFI/CMF/OBV) on the same scale

Six alerts: cross up/down 0, enter/exit extreme zones, cross above/below signal

Inputs (key)

Lengths: MFI Length, CMF Length, OBV Z-Score Length, Signal Smoothing

Weights: Weight: MFI, Weight: CMF, Weight: OBV Z-Score (blend to taste)

Zones: Upper Threshold (+), Lower Threshold (−)

Display: Show Component Lines, Shade Background in Extreme Zones

How traders use it

Direction filter: Score > 0 favors longs; < 0 favors shorts.

Momentum turns: Score crosses Signal → early shift in flow.

Strength zones: Above Upper = strong buy pressure; below Lower = strong sell pressure.

Confluence: Pair with structure (S/R, trend) and execution rules (ATR stop, risk budget).

Notes (implementation)

OBV is computed manually for compatibility; then standardized (z-score) and squashed to −100..+100 (softsign).

All plots are non-repainting; signals update live until bar close like any indicator.

Alerts Provided

Money Flow crosses up 0

Money Flow crosses down 0

Money Flow enters positive zone (above Upper)

Money Flow enters negative zone (below Lower)

Money Flow crosses above Signal

Money Flow crosses below Signal

Good starting settings

MFI 14, CMF 20, OBV Z-Score 50, Signal 9

Weights: MFI 1.0, CMF 1.0, OBV 1.0

Thresholds: +50 / −50

Turn on background shading for quick visual reads

Disclaimer

This script is for educational purposes only and is not financial advice or a recommendation. Trading involves risk; past results do not guarantee future performance. Signals can fail, especially around news and regime shifts. Test on paper, verify settings, and use appropriate position sizing and risk controls. You are solely responsible for your trading decisions.