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SPY gamma sentiment

What it is

SPY gamma sentiment — registry key spy_gex_sent.

Per-ticker gamma×OI sentiment for SPY equity board (Law 3 ‘γ-Sent’ metric).

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: market
Data source: live_only

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

How it’s computed

γ-Sent (Gamma Skew) sentiment label for SPY: sign-weighted sum of gamma × OI across the brokerage data session option chain. Distinct from gex (which is dealer-gamma analytics dealer-gamma in $B); γ-Sent is the per-ticker proxy used for the equity-board sentiment column. See app/sources/market.py GEX_Sentiment computation.

Where it surfaces

• API field: signals.spy_gex_sent on GET /api/v1/signals/latest
• Surface: daily_signals row (daily-cadence persistence)

Health-score / alignment role

Data carrier — no implication, no health-score contribution.

Persisted for downstream consumers (sparklines, base-rate matcher, calibration substrate) but does not classify into BULLISH / NEUTRAL / BEARISH and does not contribute to the 0-100 health score.

Release cadence

• Publishes: intraday

See also

• /kb/api/get-signals-latest — API endpoint that serves this field.