Matrix Approximation of Bachelier Option Prices and Greeks under Stochastic Volatility models

Elisa Alòs; Òscar Burés

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arXiv · 2606.26024

Matrix Approximation of Bachelier Option Prices and Greeks under Stochastic Volatility models

Elisa Alòs·Òscar Burés

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Abstract

In this paper, we present a numerical method for option pricing and the computation of Greeks under stochastic volatility Bachelier-type models, based on elementary linear algebra. The method allows option prices and Greeks to be computed for infinitely many strikes (within a range of convergence) by evaluating only a finite number of expectations, independent of the number of strikes. For the SABR model, we derive an explicit range of convergence. Numerical examples are provided for both the SABR and the rough Bergomi models.

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Elisa Alòs, Òscar Burés. 2026-06-24. Matrix Approximation of Bachelier Option Prices and Greeks under Stochastic Volatility models. https://arxiv.org/abs/2606.26024

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