no code implementations • 18 Jul 2023 • Peter Bank, Christian Bayer, Peter K. Friz, Luca Pelizzari
In this work, we introduce a novel pricing methodology in general, possibly non-Markovian local stochastic volatility (LSV) models.
no code implementations • 15 Dec 2022 • Peter K. Friz, Thomas Wagenhofer
In previous works Avellaneda et al. pioneered the pricing and hedging of index options - products highly sensitive to implied volatility and correlation assumptions - with large deviations methods, assuming local volatility dynamics for all components of the index.
no code implementations • 3 Dec 2022 • Peter K. Friz, William Salkeld, Thomas Wagenhofer
We consider a class of stochastic processes with rough stochastic volatility, examples of which include the rough Bergomi and rough Stein-Stein model, that have gained considerable importance in quantitative finance.
no code implementations • 5 Apr 2022 • Florian Bourgey, Stefano De Marco, Peter K. Friz, Paolo Pigato
Several asymptotic results for the implied volatility generated by a rough volatility model have been obtained in recent years (notably in the small-maturity regime), providing a better understanding of the shapes of the volatility surface induced by rough volatility models, and supporting their calibration power to S&P500 option data.
1 code implementation • 19 Jan 2022 • Christian Bayer, Peter K. Friz, Nikolas Tapia
Using rough path techniques, we provide a priori estimates for the output of Deep Residual Neural Networks in terms of both the input data and the (trained) network weights.
no code implementations • 5 Feb 2021 • Peter K. Friz, Paul Hager, Nikolas Tapia
The signature of a path can be described as its full non-commutative exponential.
Probability 60L10, 60L90, 60E10, 60G44, 60G48, 60G51, 60J76
no code implementations • 18 Sep 2020 • Peter K. Friz, Paul Gassiat, Paolo Pigato
2021] we introduce a new methodology to analyze large classes of (classical and rough) stochastic volatility models, with special regard to short-time and small noise formulae for option prices, using the framework [Bayer et al; A regularity structure for rough volatility; Math.
no code implementations • 1 Nov 2018 • Peter K. Friz, Paul Gassiat, Paolo Pigato
We present a new methodology to analyze large classes of (classical and rough) stochastic volatility models, with special regard to short-time and small noise formulae for option prices.