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DIX

What it is

DIX — registry key dix.

Classifier metric. See the bands table below for the band-by-band reading.

Data-pyramid tier

T1 — Signal. This metric sits at the signal layer of the platform’s six-tier data pyramid (T0 raw inputs → T5 actionable read). The tier reflects how far the value is from a raw measurement — not how strongly it is validated. Abstraction and validation are separate axes: a higher tier is not a claim of stronger evidence.

Horizon & validation

No validated skill horizon is on file for this metric — read it as context / a data carrier, not a validated edge. Stamps are added only when a gated research verdict lands.

Source

Source module: darkpool
Data source: back_fillable

Fetched directly from app/sources/darkpool.py; see source code for the upstream API call and any provider-specific handling.

How it’s computed

Raw Dark Index value from the dealer-gamma analytics daily CSV. DIX is the dollar-weighted short-volume fraction across NYSE/Nasdaq lit + dark venues, reported as a decimal in roughly [0.35, 0.55]; higher = more buying pressure under the surface. Daily cadence — the CSV updates after the previous session’s settle. See app/sources/darkpool.py:27 (_fetch_dix_gex). The classifier bands (Strong buying / Moderate buying / Neutral / Weak / Selling pressure) are applied downstream via signal_defs.band_for('dix', value).

Where it surfaces

• API field: signals.dix on GET /api/v1/signals/latest
• Surface: daily_signals row (daily-cadence persistence)
• Surface: intraday_signals row (per-cycle snapshot)
• Surface: /signals/history time series
• Surface: /signals/sparklines (UI sparklines)
• Surface: change markers in the rendered report

Bands / thresholds

Classifier direction: higher_is_better.

Health-score / alignment role

• Health score component: dix (weight + math in app/signals/config/score_weights.json and app/signals/score.py).
• Alignment category: dark_pool, default weight 1.5 (see /kb/alignment for the 11-category framework).
• Contributes to: health_score.DIX, implication.dark_pool, alignment.dark_pool, cascade.3

Release cadence

• Publishes: daily
• Approximate time (ET): 16:30
• Lag days: 0

_dealer-gamma analytics daily DIX CSV is an EOD publication around 16:30 ET; during the live session the most recent row is the prior close. Mapped to freshness_class=prior_close by routes.PUBLISH_TO_FRESHNESS_CLASS.

See also

• /kb/dix — narrative-style article on this metric.
• /kb/alignment — Alignment framework — 11-category implication vs. price.
• /kb/health-score — Health score — 0-100 composite.
• /kb/api/get-signals-latest — API endpoint that serves this field.