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Gamma flip level

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Auto-generated. This article is rebuilt from app/signals/config/signal_definitions.json by scripts/build_signals_kb.py. Edit the registry entry and re-run the script — do not edit this file directly.

Gamma flip level

What it is

Gamma flip level — registry key gamma_flip.

Gamma-flip positioning carrier (Phase 2 LITE, 2026-06). The SPY zero-gamma level (= spy_zgl) surfaced under its positioning name; companion to pct_to_flip / below_flip. Deterministic positioning carrier — NOT scored, NOT a predictor, no classification bands.

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: capture
Data source: computed

Derived metric — produced inside the platform (app/signals/capture.py or equivalent) rather than fetched as a raw upstream value. See the How it's computed section below for the formula.

How it’s computed

SPY gamma flip = the live zero-gamma level (spy_zgl): the spot price at which net dealer gamma flips sign, interpolated from the option-chain gamma profile. Captured at capture-time by app/signals/gamma_flip.py:compute_gamma_flip from the spy_zgl already in the cycle’s signals dict.

Where it surfaces

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

See also