volatility surface calibration
Volatility surface calibration with diagnostics.
FerroRisk calibrates volatility surfaces as production inputs: fitted, diagnosed, and ready for Greeks, spreads, chain analytics, and scenarios.
Problem
Why this needs one shared risk path
Surface fits can look smooth while violating quality expectations or hiding poor quote coverage.
Downstream analytics are brittle when the fitted surface is not tied to diagnostics.
Products need a surface contract they can trust across contracts, chains, and spread analytics.
Workflow
How FerroRisk handles it
Solve and normalize inputs
Market quotes move through IV and forward recovery before fitting.
Fit the model family
SVI, SSVI, and SABR workflows produce surfaces with explicit diagnostics.
Use the surface downstream
Calibrated surfaces feed local volatility, Greeks, spread pricing, and chain-level risk views.
Fit
What makes this FerroRisk-shaped
Public docs include surface calibration and smile panel readout workflows.
The home page names SVI, SSVI, SABR, and Dupire local-vol extraction.
Fit quality is part of the contract, not just a visualization.
Questions
Common concerns
Does FerroRisk only fit one surface model?
No. The public positioning covers SVI, SSVI, and SABR calibration workflows.
Can fitted surfaces feed spread products?
Yes. FerroSpread explicitly builds over the FerroRisk IV surface.
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