scholarly journals Option pricing of geometric Asian options in a subdiffusive Brownian motion regime

2020 ◽  
Vol 5 (5) ◽  
pp. 5332-5343
Author(s):  
Zhidong Guo ◽  
◽  
Xianhong Wang ◽  
Yunliang Zhang ◽  
Keyword(s):  
Brownian Motion ◽  
Option Pricing ◽  
Asian Options

Option pricing under the fractional stochastic volatility model

2021 ◽  
Vol 63 ◽  
pp. 123-142
Author(s):  
Yuecai Han ◽  
Zheng Li ◽  
Chunyang Liu
Keyword(s):  
Brownian Motion ◽  
Option Pricing ◽  
Fractional Brownian Motion ◽  
Stochastic Volatility ◽  
Option Price ◽  
Stochastic Volatility Model ◽  
Option Prices ◽  
European Call Option ◽  
Volatility Model ◽  
The Impact

We investigate the European call option pricing problem under the fractional stochastic volatility model. The stochastic volatility model is driven by both fractional Brownian motion and standard Brownian motion. We obtain an analytical solution of the European option price via the Itô’s formula for fractional Brownian motion, Malliavin calculus, derivative replication and the fundamental solution method. Some numerical simulations are given to illustrate the impact of parameters on option prices, and the results of comparison with other models are presented. doi:10.1017/S1446181121000225

scholarly journals Option Pricing Based on Modified Advection-Dispersion Equation: Stochastic Representation and Applications

2020 ◽  
Vol 2020 ◽  
pp. 1-8 ◽  
Author(s):  
Longjin Lv ◽  
Luna Wang
Keyword(s):  
Brownian Motion ◽  
Option Pricing ◽  
Dispersion Equation ◽  
Mean Square Displacement ◽  
Mean Square ◽  
European Option ◽  
Stochastic Representation ◽  
Pricing Models ◽  
Advection Dispersion ◽  
Black Scholes

In this paper, we first investigate the stochastic representation of the modified advection-dispersion equation, which is proved to be a subordinated stochastic process. Taking advantage of this result, we get the analytical solution and mean square displacement for the equation. Then, applying the subordinated Brownian motion into the option pricing problem, we obtain the closed-form pricing formula for the European option, when the underlying of the option contract is supposed to be driven by the subordinated geometric Brownian motion. At last, we compare the obtained option pricing models with the classical Black–Scholes ones.

The log-normal approximation in financial and other computations

2004 ◽  
Vol 36 (03) ◽  
pp. 747-773 ◽  
Author(s):  
Daniel Dufresne
Keyword(s):  
Brownian Motion ◽  
Explicit Formula ◽  
Normal Approximation ◽  
Random Variables ◽  
Exact Distribution ◽  
Financial Mathematics ◽  
Asian Options ◽  
Basket Options ◽  
Asymptotic Formulae ◽  
Log Normal

Sums of log-normals frequently appear in a variety of situations, including engineering and financial mathematics. In particular, the pricing of Asian or basket options is directly related to finding the distributions of such sums. There is no general explicit formula for the distribution of sums of log-normal random variables. This paper looks at the limit distributions of sums of log-normal variables when the second parameter of the log-normals tends to zero or to infinity; in financial terms, this is equivalent to letting the volatility, or maturity, tend either to zero or to infinity. The limits obtained are either normal or log-normal, depending on the normalization chosen; the same applies to the reciprocal of the sums of log-normals. This justifies the log-normal approximation, much used in practice, and also gives an asymptotically exact distribution for averages of log-normals with a relatively small volatility; it has been noted that all the analytical pricing formulae for Asian options perform poorly for small volatilities. Asymptotic formulae are also found for the moments of the sums of log-normals. Results are given for both discrete and continuous averages. More explicit results are obtained in the case of the integral of geometric Brownian motion.

scholarly journals Pricing of Two Kinds of Power Options under Fractional Brownian Motion, Stochastic Rate, and Jump-Diffusion Models

2014 ◽  
Vol 2014 ◽  
pp. 1-11
Author(s):  
Kaili Xiang ◽  
Yindong Zhang ◽  
Xiaotong Mao
Keyword(s):  
Brownian Motion ◽  
Option Pricing ◽  
Fractional Brownian Motion ◽  
Stock Price ◽  
Jump Diffusion ◽  
Diffusion Models ◽  
Financial Mathematics ◽  
Critical Issues ◽  
Option Pricing Model ◽  
Basic Hypothesis

Option pricing is always one of the critical issues in financial mathematics and economics. Brownian motion is the basic hypothesis of option pricing model, which questions the fractional property of stock price. In this paper, under the assumption that the exchange rate follows the extended Vasicek model, we obtain the closed form of the pricing formulas for two kinds of power options under fractional Brownian Motion (FBM) jump-diffusion models.

A SIMPLE AMERICAN OPTION PRICING METHOD USING THE FAST FOURIER TRANSFORM

2007 ◽  
Vol 10 (07) ◽  
pp. 1191-1202
Author(s):  
SUNEAL K. CHAUDHARY
Keyword(s):  
Fourier Transform ◽  
Brownian Motion ◽  
Option Pricing ◽  
Fast Fourier Transform ◽  
Numerical Technique ◽  
Transition Function ◽  
American Option Pricing ◽  
Underlying Asset ◽  
Variance Gamma Process ◽  
American Put

This paper describes a fast, flexible numerical technique to price American options and generate their value surface through time. The method runs faster and more accurately than the standard CRR binomial method in practical cases and calculates options on a considerably broader family of new, useful underlying asset processes. The technique relies on the Fast Fourier Transform (FFT) to convolve a transition function for the underlying asset process. The method allows the underlying asset process to be quite general; the previously known standard geometric Brownian motion and the Variance Gamma process [8], and a novel, purely empirical transition function are compared by computing their respective American put value surface and the exercise boundaries.

scholarly journals CONDITIONAL ASIAN OPTIONS

2015 ◽  
Vol 18 (06) ◽  
pp. 1550040 ◽  
Author(s):  
RUNHUAN FENG ◽  
HANS W. VOLKMER
Keyword(s):  
Brownian Motion ◽  
Life Insurance ◽  
Analytical Approach ◽  
Cost Benefit ◽  
Occupation Time ◽  
Asian Options ◽  
Numerical Examples ◽  
Academic Literature ◽  
Time Integral ◽  
Distributional Properties

Conditional Asian options are recent market innovations, which offer cheaper and long-dated alternatives to regular Asian options. In contrast with payoffs from regular Asian options which are based on average asset prices, the payoffs from conditional Asian options are determined only by average prices above certain threshold. Due to the limited inclusion of prices, conditional Asian options further reduce the volatility in the payoffs than their regular counterparts and have been promoted in the market as viable hedging and risk management instruments for equity-linked life insurance products. There has been no previous academic literature on this subject and practitioners have only been known to price these products by simulations. We propose the first analytical approach to computing prices and deltas of conditional Asian options in comparison with regular Asian options. In the numerical examples, we put to the test some cost-benefit claims by practitioners. As a by-product, the work also presents some distributional properties of the occupation time and the time-integral of geometric Brownian motion during the occupation time.

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