Structural Compression Tracker
A quantitative measure of structural integrity and finite-precision risk within derivative markets. Calculated continuously, aggregated weekly.
Numerical Stability Index (NSI)
State: Structural CompressionLongitudinal Observation (12-Week)
The NSI is evaluated at daily close. No forward-looking inference is implied.
Structural Interpretation
The Numerical Stability Index (NSI) measures the structural integrity of the active volatility surface within the standardized 15–45 DTE lens.
The current reading of 67.3 indicates measurable structural compression within the active 15–45 DTE lens.
This reflects:
- A measurable contraction of the Stable basin
- Increased Oscillatory and Singular regime presence
- Elevated trajectory stress during implied volatility inversion
NSI does not measure price direction. It measures the geometric effort required to compute volatility. Movements in the index indicate structural compression or decompression of computational topology — not market sentiment.
Attribution: NSI calculations are derived using topology-aware diagnostics implemented in SGNIE.