Equity Volatility Surface Calibrator & Interpolator

Seed: option_quotes_by_strike_ttm, smoothing_constraints, arbitrage_free_checks

Implementation Guide

A practical calibrator that fits implied-volatility surfaces to market option quotes while enforcing arbitrage-free conditions, interpolation/extrapolation rules and stability across tenors. Serves desks building quoting engines and risk systems for option pricing and hedging.

💡 Expert Q&A Insights

Q: How to avoid calendar arbitrage?

Enforce monotonicity in total implied variance across maturities and smoothness constraints. \n

Q: What interpolation methods work?

SVI-like parameterizations and monotone cubic splines are common; choose based on data density.

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