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0DTE Put/Call Ratio

What it is

0DTE Put/Call Ratio — registry key zero_dte_pcr.

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: vol_structure
Data source: live_only

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

How it’s computed

0DTE put/call volume ratio: zero_dte_put_vol / zero_dte_call_vol. See app/sources/vol_structure.py:178.

Where it surfaces

• API field: zero_dte.pcr 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: range_is_better.

Health-score / alignment role

• Health score component: zero_dte_pcr (weight + math in app/signals/config/score_weights.json and app/signals/score.py).
• Contributes to: health_score.0DTE PCR, cascade.2

Release cadence

• Publishes: intraday

See also

• /kb/health-score — Health score — 0-100 composite.
• /kb/api/get-signals-latest — API endpoint that serves this field.