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Breadth (50d)

What it is

Breadth (50d) — registry key breadth_50d.

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: breadth
Data source: back_fillable

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

How it’s computed

Percent of S&P 500 constituents whose latest close is above their own 50-day SMA: count(close > sma50) / count(valid) × 100. See app/sources/breadth.py:83.

Where it surfaces

• API field: signals.pct_above_50sma 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
• Sparkline aliases: breadth

Bands / thresholds

Classifier direction: higher_is_better.

Health-score / alignment role

• Health score component: breadth_50d (weight + math in app/signals/config/score_weights.json and app/signals/score.py).
• Alignment category: breadth, default weight 1.5 (see /kb/alignment for the 11-category framework).
• Contributes to: health_score.Breadth, implication.breadth, alignment.breadth, cascade.5

Release cadence

• Publishes: intraday

See also

• /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.