Results 1 to 10 of about 52,895 (269)

Entropy corrected geometric Brownian motion [PDF]

open access: yesScientific Reports
The geometric Brownian motion (GBM) is widely used for modeling stochastic processes, particularly in finance. However, its solutions are constrained by the assumption that the underlying distribution of returns follows a log-normal distribution.
Rishabh Gupta   +3 more
doaj   +5 more sources

Generalised Geometric Brownian Motion: Theory and Applications to Option Pricing [PDF]

open access: yesEntropy, 2020
Classical option pricing schemes assume that the value of a financial asset follows a geometric Brownian motion (GBM). However, a growing body of studies suggest that a simple GBM trajectory is not an adequate representation for asset dynamics, due to ...
Viktor Stojkoski   +4 more
doaj   +4 more sources

Efficient or Fractal Market Hypothesis? A Stock Indexes Modelling Using Geometric Brownian Motion and Geometric Fractional Brownian Motion

open access: yesMathematics, 2021
In this article, we propose a test of the dynamics of stock market indexes typical of the US and EU capital markets in order to determine which of the two fundamental hypotheses, efficient market hypothesis (EMH) or fractal market hypothesis (FMH), best ...
Vasile Brătian   +4 more
doaj   +3 more sources

A discrete-time model that weakly converges to a continuous-time geometric Brownian motion with Markov switching drift rate

open access: yesFrontiers in Applied Mathematics and Statistics
This research is devoted to studying a geometric Brownian motion with drift switching driven by a 2 × 2 Markov chain. A discrete-time multiplicative approximation scheme was developed, and its convergence in Skorokhod topology to the continuous-time ...
Vitaliy Golomoziy   +2 more
doaj   +3 more sources

An Empirical Analysis of Price Jump and Asymmetric Information in Tehran Stock Exchange [PDF]

open access: yesراهبرد مدیریت مالی, 2016
Deep understanding aboutthe impact of news and information on stock market is vital for analyzing and forecasting stock return. For this purpose, stochastic differential equations, such as geometric Brownian motion, geometric Brownian motion with jump ...
Saber Molaei   +2 more
doaj   +1 more source

Geometric fractional Brownian motion model for commodity market simulation

open access: yesAlexandria Engineering Journal, 2021
The geometric Brownian motion (GBM) model is a mathematical model that has been used to model asset price paths. By incorporating Hurst parameter to GBM to characterize long-memory phenomenon, the geometric fractional Brownian motion (GFBM) model was ...
Siti Nur Iqmal Ibrahim   +2 more
doaj   +1 more source

Stochastic perturbation of the Lighthill–Whitham–Richards model via the method of stochastic characteristics

open access: yesJournal of Mathematics in Industry, 2021
In this paper we apply the method of stochastic characteristics to a Lighthill–Whitham–Richards model. The stochastic perturbation can be seen as errors in measurement of the traffic density.
Nora Müller, Wolfgang Bock
doaj   +1 more source

PERSAMAAN DIFERENSIAL ORNSTEIN-UHLENBECK DALAM PERAMALAN HARGA SAHAM

open access: yesMedia Statistika, 2020
Geometric Brownian motion is one of the most widely used stock price model. One of the assumptions that is filled with stock return volatility is constant. Gamma Ornstein-Uhlenbeck process a model to describe volatility in finance.
Amam Taufiq Hidayat, Subanar Subanar
doaj   +1 more source

An optimal polynomial approximation of Brownian motion [PDF]

open access: yes, 2020
In this paper, we will present a strong (or pathwise) approximation of standard Brownian motion by a class of orthogonal polynomials. The coefficients that are obtained from the expansion of Brownian motion in this polynomial basis are independent ...
Foster, James   +2 more
core   +3 more sources

Stock Prediction Model Based on Mixed Fractional Brownian Motion and Improved Fractional-Order Particle Swarm Optimization Algorithm

open access: yesFractal and Fractional, 2022
As one of the main areas of value investing, the stock market attracts the attention of many investors. Among investors, market index movements are a focus of attention.
Hongwen Hu   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy