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SPY 3d return

What it is

SPY 3d return — registry key spy_3d_return.

Daily-signals column exposed for sparkline charts; raw value, no classification bands. Drives the 3d alignment baseline (default).

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

Percent change of SPY close over the last 3 trading days: (spy[today] / spy[3d_ago] - 1) × 100. Used as the default alignment baseline.

Where it surfaces

• API field: alignment.spy_direction.return_3d on GET /api/v1/signals/latest
• Surface: daily_signals row (daily-cadence persistence)
• Surface: /signals/sparklines (UI sparklines)

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-alignment — API endpoint that serves this field.