Results 41 to 50 of about 124,089 (295)

Jump Driven Risk Model Performance in Cryptocurrency Market

International Journal of Financial Studies, 2020
This paper aims at identifying a validated risk model for the cryptocurrency market. We propose a stochastic volatility model with co-jumps in return and volatility (SVCJ) to highlight the role of jumps in returns and volatility in affecting Value-at ...
Ramzi Nekhili, Jahangir Sultan
doaj   +1 more source

MEAN VARIANCE PORTFOLIO SELECTION PROBLEM WITH MULTISCALE STOCHASTIC VOLATILITY

Prospectiva, 2022
This paper discussed the mean-variance portfolio selection problem with multiscale stochastic volatility. We considered two type of volatility, including a fast –moving one and a slowly-moving one by using the stochastic dynamic programming principle ...
Carlos Granados
doaj   +1 more source

Stochastic Volatility for Lévy Processes [PDF]

Mathematical Finance, 2002
Three processes reflecting persistence of volatility are initially formulated by evaluating three Lévy processes at a time change given by the integral of a mean‐reverting square root process. The model for the mean‐reverting time change is then generalized to include non‐Gaussian models that are solutions to Ornstein‐Uhlenbeck equations driven by one ...
Geman, Hélyette, Carr, Peter, Madan, Dilip B., Yor, Marc   +3 more
openaire   +5 more sources

Comparative analysis of stochastic models for simulating leveraged ETF price paths [PDF]

Mathematics and Modeling in Finance
This paper compares stochastic models for simulating leveraged Exchange-Traded Funds (LETFs) price paths, focusing on their applications in risk management and option pricing.
Kartikay Goyle
doaj   +1 more source

Valuation of Commodity-Linked Bond with Stochastic Convenience Yield, Stochastic Volatility, and Credit Risk in an Intensity-Based Model

Mathematics, 2023
In this study, we consider an intensity-based model for pricing a commodity-linked bond with credit risk. Recently, the pricing of a commodity-linked bond with credit risk under the structural model has been studied.
Junkee Jeon, Geonwoo Kim
doaj   +1 more source

Numerical Simulation of the Heston Model under Stochastic Correlation

International Journal of Financial Studies, 2017
Stochastic correlation models have become increasingly important in financial markets. In order to be able to price vanilla options in stochastic volatility and correlation models, in this work, we study the extension of the Heston model by imposing ...
Long Teng, Matthias Ehrhardt, Michael Günther   +2 more
doaj   +1 more source

Medidas alternativas de volatilidad en el mercado de valores peruano

Revista de Análisis Económico y Financiero, 2019
This document seeks to compare the main volatility calculation methodologies for the Peruvian stock market. Three volatility calculation methods are presented, the EWMA model, the GARCH model and the Stochastic Volatility (SV) model.
Rafael Nivin Valdiviezo
doaj   +1 more source

Intermediate Resistive State in Wafer‐Scale Vertical MoS2 Memristors Through Lateral Silver Filament Growth for Artificial Synapse Applications

Advanced Functional Materials, EarlyView.
In MOCVD MoS2 memristors, a current compliance‐regulated Ag filament mechanism is revealed. The filament ruptures spontaneously during volatile switching, while subsequent growth proceeds vertically through the MoS2 layers and then laterally along the van der Waals gaps during nonvolatile switching.
Yuan Fa, Milan Buttberg, Ke Ran, Rana Walied Ahmad, Dennis Braun, Lukas Völkel, Jimin Lee, Sofía Cruces, Bart Macco, Bárbara Canto, Holger Lerch, Thorsten Wahlbrink, Holger Kalisch, Michael Heuken, Andrei Vescan, Joachim Mayer, Zhenxing Wang, Ilia Valov, Stephan Menzel, Max C. Lemme   +19 more
wiley   +1 more source

A New Threshold Switching Device With Tunable Negative Differential Resistance Based on ErMnO3 Polymorphs

Advanced Functional Materials, EarlyView.
Polymorph engineering in ErMnO3 enables low‐voltage, forming‐free threshold switching with tunable negative differential resistance. Conducting orthorhombic regions embedded in an insulating hexagonal matrix provide controlled Joule‐heating‐enhanced Poole–Frenkel transport. The hexagonal phase prevents excessive heating and breakdown.
Rong Wu, Florian Maudet, Thanh Luan Phan, Wassim Hamouda, Richard Schroedter, Ahmet Samil Demirkol, Ronald Tetzlaff, Veeresh Deshpande, Catherine Dubourdieu   +8 more
wiley   +1 more source

Model of Continuous Random Cascade Processes in Financial Markets

Frontiers in Physics, 2020
This article presents a continuous cascade model of volatility formulated as a stochastic differential equation. Two independent Brownian motions are introduced as random sources triggering the volatility cascade: one multiplicatively combines with ...
Jun-ichi Maskawa, Koji Kuroda
doaj   +1 more source