Why Swoopr Is Building This
Low volatility and calm prices can coexist with fragile structure. The Fragility Index distinguishes genuine resilience from temporary calm, providing a structural vulnerability read rather than a movement or direction signal.
Swoopr already publishes market tools, a live proprietary Fear and Greed gauge, a sentiment dashboard, macro and regime education, portfolio diagnostics and a market-history library. This product makes one missing question measurable, explainable and reusable across the site.
What It Measures
The model draws from the following evidence families:
- Market and leadership concentration
- Breadth deterioration
- Volatility compression and term structure
- Credit-spread behavior
- Cross-asset correlation
- Margin and leverage context
- Speculative participation
- Valuation pressure
- Liquidity deterioration
- Price and breadth divergence
Scoring Methodology
Each component is normalized to a 0-100 historical percentile score. For a raw value x:
component_score = percentile_rank(x within approved history) * 100
Where a higher raw value represents more resilient conditions, the score is inverted:
adjusted_score = 100 - component_score
The composite is:
composite = sum(weight_i * adjusted_score_i) / sum(active_weight_i)
Interpretation Bands
| Score range | Label |
|---|---|
| 0-24 | Resilient |
| 25-39 | Low fragility |
| 40-59 | Balanced |
| 60-74 | Elevated |
| 75-100 | Highly fragile |
Bands are communication aids, not natural laws. The reading always shows the numeric value, trend and component contributions.
FAQ
Is Swoopr Market Fragility Index a bear market signal?
No. It measures structural vulnerability, not direction. A highly fragile market can continue rising, and a resilient market can still fall on news or exogenous events.
How is fragility different from volatility?
Volatility measures realized or expected price movement. Fragility measures structural vulnerability to amplification. A low-volatility, narrow-breadth, high-leverage environment can read as calm on volatility metrics while scoring high on fragility.
What happens when data are missing?
The affected component is excluded under a predefined rule, coverage falls, and the product shows this to the user. Missing data are not converted to a neutral score.
Does a high fragility score mean I should sell?
No. The score is educational market context. It describes structural conditions, not a recommended action. High fragility has persisted for months in historical markets without a correction occurring.
How is this different from the Market Health Index?
Market Health answers: Is the market actually healthy underneath the headline index? Fragility answers: How vulnerable is the market structure if a shock arrives? They are related but address different structural questions and are cross-linked rather than merged.
Methodology Version and Source Provenance
Current Version
| Field | Value |
|---|---|
| Version | v1.0 |
| Effective date | 2026-09-30 |
| Methodology policy | Swoopr Investment: Data & Methodology Policy |
Change Log
| Version | Date | Summary |
|---|---|---|
| v1.0 | 2026-09-30 | Initial published version. Scoring logic, normalization standard, component weights and missing-data rules documented for the first time. |
Source Series and Provenance
The table below lists the primary input series used in this score. Swoopr does not redistribute or relicense third-party data. Source data is retrieved for internal computation only; third-party terms apply to any direct use of those series.
| Component | Primary source | Series / method | Data type |
|---|---|---|---|
| Margin conditions | FINRA | FINRA Margin Statistics: customer margin debit balances | Leverage/margin |
| Financial conditions | Chicago Fed / FRED | NFCI (National Financial Conditions Index) | Financial conditions |
| Volatility regime | Cboe | VIX and VVIX (volatility of volatility) | Implied volatility |
| Federal Reserve systemic risk assessment | Federal Reserve | Financial Stability Report: risk heat map | Macro reference |
Limitations
Fragility is a structural characteristic, not a prediction of timing or magnitude. High fragility readings can persist for extended periods without triggering a correction. Margin data is published monthly with a lag.
All scores are for education and general information only. They do not constitute personalized investment advice. See the Financial Disclaimer and Data & Methodology Policy for full terms.
References
Disclaimer
This score is educational market context only. It is not investment advice, a forecast, or a promise of future returns. Data can be delayed, revised or incomplete. Swoopr publishes the observation timestamp and methodology version with every live reading.