MFI Advanced

Features

• MFI core: manual MFI calculation → averaged main line → signal line via the shared smoothing kernel
• Exchange-only volume gate: symbols without real trade volume (syminfo.volumetype is not base/quote) get no MFI output at all — no neutral placeholder, no fallback computation
• Bounded scale: fixed 0-100 panel with 50 midline and configurable 80/20 OB/OS levels
• Signals on raw bounded values: crossover detection uses MFI and its signal directly, so display toggles never affect signal logic
• 4-state histogram: rising/falling × positive/negative drives four opacity states
• Gradient line: color.from_gradient() from bull teal to bear pink based on oscillator level
• Shadow fills: gradient shadows between MFI and the 50 midline
• OB/OS zone fills: configurable overbought and oversold bands
• Signal markers: configurable OB/OS-zone filter for MFI/signal crosses; optional 50-cross dots
• Stall/absorption layer: flags bars where MFI cools/heats sharply while price barely moves; renders contradicted crosses as small/faded triangles and fades the histogram without touching cross logic
• Trend context line: a slow MFI plotted faint behind the fast line; a cross against its side of 50 is marked counter-trend
• Divergence wedge: fills the area between fast MFI and the trend context only when they move in opposite directions
• Sentiment Bar: optional live label at the panel’s right edge — a signed ±100 score for how far MFI sits inside its own OB/OS zone, plus a mini bar
• Signal Quality: optional 0-100 score next to each Bull/Bear Extreme marker — OB/OS-zone depth (50%) + context agreement (25%) + stall-free (25%)
• Alert conditions: bull/bear cross from extreme zone; 50-cross up/down

Scoring

The optional extreme filter requires the MFI line to have visited the oversold or overbought zone within the last N bars before a signal-line cross qualifies as a signal. This keeps mid-range noise out of the main triangle markers.

Instrumente

MFI is inherently volume-weighted (typical-price × volume flow ratio) — there is no meaningful MFI without real trade volume.

• Valid: any symbol whose syminfo.volumetype reports base or quote — as a rule futures, exchange-listed stocks and crypto exchanges, plus broker feeds that pass real traded quantity through.
• Proxy: where that volume is a broker’s own share of the market (a CFD feed reporting base), the reading describes that broker’s flow, not the exchange’s — an approximation, not exchange volume.
• Invalid: any symbol reporting tick (a count of price updates) or n/a — there is nothing to weight.

On an invalid instrument the indicator produces no MFI line, no signal/alert conditions, and no scores — every volume-dependent value gates to na and the panel goes blank except for a one-time “benötigt echtes Handelsvolumen” warning label on the last bar showing the detected syminfo.volumetype.

Reference-market variant (documented, not implemented): MFI is a pure oscillator with no absolute price level, so a reference-market MFI (e.g. computed from NYMEX:NG1! volume while charting CAPITALCOM:NATURALGAS) would at least avoid the price-mixing problem that an anchored VWAP would have. But per DATA_VALIDITY.md §4.1, a cross-symbol request.security() call inside a single indicator is the exception, not the default — the added latency, session-mismatch, and request-budget cost of a per-indicator reference request isn’t justified when the framework’s own guidance is to route any reference-market context through one shared context module rather than duplicating it per script. Not implemented here.

Stall / Absorption

The stall layer compares MFI’s change to price’s ATR-normalized change over a short lookback. If MFI cools or heats by at least Min MFI Move while price moves less than Max Price Move (ATR), money-flow momentum has decoupled from price. A contradicted cross still fires, but renders as a small faded triangle.

Trend Context

The trend context line is a slower MFI using a longer length. It is single-timeframe and serves two visual roles:

• Support: while the slow line holds above 50, a fast pullback can be read as a supported dip; while it holds below 50, a fast bounce can be read as unsupported.
• Counter-indication: a fast extreme cross against the slow line’s side of 50 renders weak.
• Divergence wedge: the area between fast MFI and slow context fills only when they move in opposite directions, using long color for a supported dip and short color for an unsupported bounce.

The panel uses two color languages: teal/pink encodes oscillator level, while green/red Long/Short colors drive the trend context line, histogram, and divergence wedge.