Volatility Surface Construction
Volatility surface construction is the process of mapping implied volatility across different strike prices and time-to-maturity for a specific asset. It combines market data from liquid options to create a three-dimensional representation of market expectations.
Because not all options are actively traded, interpolation methods are required to fill in the surface where data is missing. This surface is crucial for pricing exotic derivatives and managing delta-neutral portfolios.
A skewed or smiling surface indicates that the market anticipates different risks for different strike levels. Quantitative analysts use this surface to calculate the Greeks, which measure sensitivity to market changes.
Accurate construction prevents arbitrage opportunities by ensuring consistent pricing across the derivative chain.