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- research-articleOctober 2024
Accurate Neural Network Option Pricing Methods with Control Variate Techniques and Data Synthesis/Cleaning with Financial Rationality
CIKM '24: Proceedings of the 33rd ACM International Conference on Information and Knowledge ManagementPages 860–869https://doi.org/10.1145/3627673.3679530This paper enhances option pricing accuracy by incorporating financial expertise into a neural network (NN) design and optimizing data sample quality through cleaning and synthesis. Instead of directly estimating option values (OVs) with NNs, we leverage ...
- research-articleJanuary 2023
American knock-out options based on floating interest rate in uncertain financial market
Journal of Intelligent & Fuzzy Systems: Applications in Engineering and Technology (JIFS), Volume 45, Issue 5Pages 7259–7270https://doi.org/10.3233/JIFS-233634The knock-out options are considered as path-dependent barrier options that only expire worthless once the value of the underlying asset reaches a specific threshold. The uncertain differential equations are typically used to describe stock fluctuations ...
- research-articleJanuary 2023
An option pricing model with adaptive interval-valued fuzzy numbers
International Journal of Computing Science and Mathematics (IJCSM), Volume 17, Issue 4Pages 371–381https://doi.org/10.1504/ijcsm.2023.131626This paper proposes an option pricing model with an interval-valued fuzzy interest rate, volatility, and stock price. The interval-valued fuzzy pattern of the Black-Scholes option formula is also investigated. With the presented option pricing model, the ...
- research-articleMarch 2022
Inverse Problem Approach to Machine Learning with Application in the Option Price Correction
Optical Memory and Neural Networks (SPOMNN), Volume 31, Issue 1Pages 46–58https://doi.org/10.3103/S1060992X22010088AbstractWe investigate a new method in learning to fix the existence of an unsuitable subfunction of a general system. We assume this subfunction is dependent on the system input variables. In this process, we put a learner instead of the unsuitable ...
- research-articleMarch 2022
Interpretable Optimal Stopping
Optimal stopping is the problem of deciding when to stop a stochastic system to obtain the greatest reward, arising in numerous application areas such as finance, healthcare, and marketing. State-of-the-art methods for high-dimensional optimal stopping ...
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- research-articleJanuary 2022
Pricing Options under Rough Volatility with Backward SPDEs
SIAM Journal on Financial Mathematics (SIFIN), Volume 13, Issue 1Pages 179–212https://doi.org/10.1137/20M1357639In this paper, we study the option pricing problems for rough volatility models. As the framework is non-Markovian, the value function for a European option is not deterministic; rather, it is random and satisfies a backward stochastic partial ...
- research-articleNovember 2021
Distributional Transforms, Probability Distortions, and Their Applications
Mathematics of Operations Research (MOOR), Volume 46, Issue 4Pages 1490–1512https://doi.org/10.1287/moor.2020.1090In this paper we provide a general mathematical framework for distributional transforms, which allows for many examples that are used extensively in the literature of finance, economics, and optimization. We put a special focus on the class of probability ...
- research-articleJuly 2021
The Price of the Smile and Variance Risk Premia
Using a new specification of multifactor volatility, we estimate the hidden risk factors spanning S&P 500 index (SPX) implied volatility surfaces and the risk premia of volatility-sensitive payoffs. SPX implied volatility surfaces are well-explained by ...
- research-articleJanuary 2021
Short Communication: A Quantum Algorithm for Linear PDEs Arising in Finance
SIAM Journal on Financial Mathematics (SIFIN), Volume 12, Issue 4Pages SC98–SC114https://doi.org/10.1137/21M1397878We propose a hybrid quantum-classical algorithm, which originated from quantum chemistry, to price European and Asian options in the Black--Scholes model. Our approach is based on the equivalence between the pricing PDE and the Schrödinger equation in ...
- research-articleJanuary 2021
Short Communication: Beyond Surrogate Modeling: Learning the Local Volatility via Shape Constraints
SIAM Journal on Financial Mathematics (SIFIN), Volume 12, Issue 3Pages SC58–SC69https://doi.org/10.1137/20M1381538We explore the abilities of two machine learning approaches for no-arbitrage interpolation of European vanilla option prices, which jointly yield the corresponding local volatility surface: a finite dimensional Gaussian process (GP) regression approach under ...
- research-articleJanuary 2021
Brownian Path Generation and Polynomial Chaos
SIAM Journal on Financial Mathematics (SIFIN), Volume 12, Issue 2Pages 724–743https://doi.org/10.1137/20M1343154We introduce a new Brownian path generation method using a second degree polynomial chaos expansion, and use a conjugate gradient algorithm to find the orthogonal transformation that minimizes the mean truncation dimension of this polynomial. We combine ...
- research-articleJanuary 2021
Existence and Uniqueness of Viscosity Solutions of an Integro-differential Equation Arising in Option Pricing
SIAM Journal on Financial Mathematics (SIFIN), Volume 12, Issue 2Pages 604–640https://doi.org/10.1137/20M1341441We prove the existence and uniqueness of the viscosity solution of an integro-differential equation (IDE) arising in the pricing of American-style multi-asset options in a multivariate Ornstein--Uhlenbeck-type stochastic volatility model. The main ...
- research-articleJanuary 2020
Jump OpVaR on option liquidity
International Journal of Computing Science and Mathematics (IJCSM), Volume 12, Issue 2Pages 147–156https://doi.org/10.1504/ijcsm.2020.111119The impact of operational risk on the option pricing through the extension of Mitra's model with Merton's jump diffusion model is assessed. A partial integral differential equation (PIDE) is derived and the impact of parameters of Merton's model on ...
- research-articleJanuary 2020
Mixing LSMC and PDE Methods to Price Bermudan Options
SIAM Journal on Financial Mathematics (SIFIN), Volume 11, Issue 1Pages 201–239https://doi.org/10.1137/19M1249035We develop a mixed least squares Monte Carlo--partial differential equation (LSMC-PDE) method for pricing Bermudan style options on assets under stochastic volatility. The algorithm is formulated for an arbitrary number of assets and volatility processes, ...
- research-articleApril 2019
Volatility Uncertainty, Time Decay, and Option Bid-Ask Spreads in an Incomplete Market
This paper documents the fact that in options markets, the (percentage) implied volatility bid-ask spread increases at an increasing rate as the option’s maturity date approaches. To explain this stylized fact, this paper provides a market microstructure ...
- research-articleAugust 2018
Pathwise Dynamic Programming
Mathematics of Operations Research (MOOR), Volume 43, Issue 3Pages 965–995https://doi.org/10.1287/moor.2017.0891We present a novel method for deriving tight Monte Carlo confidence intervals for solutions of stochastic dynamic programming equations. Taking some approximate solution to the equation as an input, we construct pathwise recursions with a known bias. ...
- research-articleJanuary 2018
Analysis of Quantization Error in Financial Pricing via Finite Difference Methods
SIAM Journal on Numerical Analysis (SINUM), Volume 56, Issue 3Pages 1731–1757https://doi.org/10.1137/17M1139655In this paper, we study the error of a second order finite difference scheme for the one-dimensional convection-diffusion equation. We consider nonsmooth initial conditions commonly encountered in financial pricing applications. For these initial conditions, ...
- research-articleJanuary 2018
Partial Differential Equation Pricing of Contingent Claims under Stochastic Correlation
SIAM Journal on Scientific Computing (SISC), Volume 40, Issue 1Pages B1–B31https://doi.org/10.1137/16M1099017In this paper, we study a partial differential equation (PDE) framework for option pricing where the underlying factors exhibit stochastic correlation, with an emphasis on computation. We derive a multidimensional time-dependent PDE for the corresponding ...
- research-articleJanuary 2018
Option Pricing in a One-Dimensional Affine Term Structure Model via Spectral Representations
SIAM Journal on Financial Mathematics (SIFIN), Volume 9, Issue 2Pages 634–664https://doi.org/10.1137/16M1098267Under a mild condition on the branching mechanism, we provide an eigenvalue expansion for the pricing semigroup in a one-dimensional positive affine term structure model. This representation, which is based on results from Ogura [Publ. Res. Inst. Math. ...
- research-articleJanuary 2018
Fast Computation of the Matrix Exponential for a Toeplitz Matrix
SIAM Journal on Matrix Analysis and Applications (SIMAX), Volume 39, Issue 1Pages 23–47https://doi.org/10.1137/16M1083633The computation of the matrix exponential is a ubiquitous operation in numerical mathematics, and for a general, unstructured $n\times n$ matrix it can be computed in $\mathcal{O}(n^3)$ operations. An interesting problem arises if the input matrix is a ...