CHAPTER 4 Path Dependent Options
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Variance Reduction with Control Variate for Pricing Asian Options in a Geometric Lévy Model
IAENG International Journal of Applied Mathematics, 41:4, IJAM_41_4_05 ______________________________________________________________________________________ Variance Reduction with Control Variate for Pricing Asian Options in a Geometric Levy´ Model Wissem Boughamoura and Faouzi Trabelsi Abstract—This paper is concerned with Monte Carlo simu- use of the path integral formulation. [19] studied a cer- lation of generalized Asian option prices where the underlying tain one-dimensional, degenerate parabolic partial differential asset is modeled by a geometric (finite-activity) Levy´ process. equation with a boundary condition which arises in pricing A control variate technique is proposed to improve standard Monte Carlo method. Some convergence results for plain Monte of Asian options. [25] considered the approximation of Carlo simulation of generalized Asian options are proven, and a the optimal stopping problem associated with ultradiffusion detailed numerical study is provided showing the performance processes in valuating Asian options. The value function is of the variance reduction compared to straightforward Monte characterized as the solution of an ultraparabolic variational Carlo method. inequality. Index Terms—Levy´ process, Asian options, Minimal-entropy martingale measure, Monte Carlo method, Variance Reduction, For discontinuous markets, [8] generalized Laplace trans- Control variate. form for continuously sampled Asian option where under- lying asset is driven by a Levy´ Process, [18] presented a binomial tree method for Asian options under a particular I. INTRODUCTION jump-diffusion model. But such Market may be incomplete. He pricing of Asian options is a delicate and interesting Therefore, it will be a big class of equivalent martingale T topic in quantitative finance, and has been a topic of measures (EMMs). For the choice of suitable one, many attention for many years now. -
Pricing and Hedging of Lookback Options in Hyper-Exponential Jump Diffusion Models
Pricing and hedging of lookback options in hyper-exponential jump diffusion models Markus Hofer∗ Philipp Mayer y Abstract In this article we consider the problem of pricing lookback options in certain exponential Lévy market models. While in the classic Black-Scholes models the price of such options can be calculated in closed form, for more general asset price model one typically has to rely on (rather time-intense) Monte- Carlo or P(I)DE methods. However, for Lévy processes with double exponentially distributed jumps the lookback option price can be expressed as one-dimensional Laplace transform (cf. Kou [Kou et al., 2005]). The key ingredient to derive this representation is the explicit availability of the first passage time distribution for this particular Lévy process, which is well-known also for the more general class of hyper-exponential jump diffusions (HEJD). In fact, Jeannin and Pistorius [Jeannin and Pistorius, 2010] were able to derive formulae for the Laplace transformed price of certain barrier options in market models described by HEJD processes. Here, we similarly derive the Laplace transforms of floating and fixed strike lookback option prices and propose a numerical inversion scheme, which allows, like Fourier inversion methods for European vanilla options, the calculation of lookback options with different strikes in one shot. Additionally, we give semi-analytical formulae for several Greeks of the option price and discuss a method of extending the proposed method to generalised hyper- exponential (as e.g. NIG or CGMY) models by fitting a suitable HEJD process. Finally, we illustrate the theoretical findings by some numerical experiments. -
Unified Pricing of Asian Options
Unified Pricing of Asian Options Jan Veˇceˇr∗ ([email protected]) Assistant Professor of Mathematical Finance, Department of Statistics, Columbia University. Visiting Associate Professor, Institute of Economic Research, Kyoto University, Japan. First version: August 31, 2000 This version: April 25, 2002 Abstract. A simple and numerically stable 2-term partial differential equation characterizing the price of any type of arithmetically averaged Asian option is given. The approach includes both continuously and discretely sampled options and it is easily extended to handle continuous or dis- crete dividend yields. In contrast to present methods, this approach does not require to implement jump conditions for sampling or dividend days. Asian options are securities with payoff which depends on the average of the underlying stock price over certain time interval. Since no general analytical solution for the price of the Asian option is known, a variety of techniques have been developed to analyze arithmetic average Asian options. There is enormous literature devoted to study of this option. A number of approxima- tions that produce closed form expressions have appeared, most recently in Thompson (1999), who provides tight analytical bounds for the Asian option price. Geman and Yor (1993) computed the Laplace transform of the price of continuously sampled Asian option, but numerical inversion remains problematic for low volatility and/or short maturity cases as shown by Fu, Madan and Wang (1998). Very recently, Linetsky (2002) has derived new integral formula for the price of con- tinuously sampled Asian option, which is again slowly convergent for low volatility cases. Monte Carlo simulation works well, but it can be computationally expensive without the enhancement of variance reduction techniques and one must account for the inherent discretization bias result- ing from the approximation of continuous time processes through discrete sampling as shown by Broadie, Glasserman and Kou (1999). -
A Discrete-Time Approach to Evaluate Path-Dependent Derivatives in a Regime-Switching Risk Model
risks Article A Discrete-Time Approach to Evaluate Path-Dependent Derivatives in a Regime-Switching Risk Model Emilio Russo Department of Economics, Statistics and Finance, University of Calabria, Ponte Bucci cubo 1C, 87036 Rende (CS), Italy; [email protected] Received: 29 November 2019; Accepted: 25 January 2020 ; Published: 29 January 2020 Abstract: This paper provides a discrete-time approach for evaluating financial and actuarial products characterized by path-dependent features in a regime-switching risk model. In each regime, a binomial discretization of the asset value is obtained by modifying the parameters used to generate the lattice in the highest-volatility regime, thus allowing a simultaneous asset description in all the regimes. The path-dependent feature is treated by computing representative values of the path-dependent function on a fixed number of effective trajectories reaching each lattice node. The prices of the analyzed products are calculated as the expected values of their payoffs registered over the lattice branches, invoking a quadratic interpolation technique if the regime changes, and capturing the switches among regimes by using a transition probability matrix. Some numerical applications are provided to support the model, which is also useful to accurately capture the market risk concerning path-dependent financial and actuarial instruments. Keywords: regime-switching risk; market risk; path-dependent derivatives; insurance policies; binomial lattices; discrete-time models 1. Introduction With the aim of providing an accurate evaluation of the risks affecting financial markets, a wide range of empirical research evidences that asset returns show stochastic volatility patterns and fatter tails with respect to the standard normal model. -
Pricing and Hedging of Asian Option Under Jumps
IAENG International Journal of Applied Mathematics, 41:4, IJAM_41_4_04 ______________________________________________________________________________________ Pricing And Hedging of Asian Option Under Jumps Wissem Boughamoura, Anand N. Pandey and Faouzi Trabelsi Abstract—In this paper we study the pricing and hedging To price Asian options in such setting, [12] presents gener- problems of ”generalized” Asian options in a jump-diffusion alized Laplace transform for continuously sampled Asian op- model. We choose the minimal entropy martingale measure tion where underlying asset is driven by a Levy´ Process, [29] (MEMM) as equivalent martingale measure and we derive a partial-integro differential equation for their price. We discuss proposes a binomial tree method under a particular jump- the minimal variance hedging including the optimal hedging diffusion model. For the case of semimartingale models, [36] ratio and the optimal initial endowment. When the Asian payoff shows that the pricing function is satisfying a partial-integro is bounded, we show that for the exponential utility function, differential equation. For the precise numerical computation the utility indifference price goes to the Asian option price of the PIDE using difference schemes we refer interested evaluated under the MEMM as the Arrow-Pratt measure of absolute risk-aversion goes to zero. readers to explore with [11]. In [3] is derived the range of price for Asian option when underlying stock price is Index Terms—Geometric Levy´ process, Generalized Asian following geometric Brownian motion and jump (Poisson). In options, Minimal entropy martingale measure, Partial-integro differential equation, Utility indifference pricing, Exponential [30] is derived bounds for the price of a discretely monitored utility function. -
On the Equivalence of Floating and Fixed-Strike Asian Options
Applied Probability Trust (5 September 2001) ON THE EQUIVALENCE OF FLOATING AND FIXED-STRIKE ASIAN OPTIONS VICKY HENDERSON,∗ University of Oxford RAFALWOJAKOWSKI, ∗∗ Lancaster University Abstract There are two types of Asian options in the financial markets which differ according to the role of the average price. We give a symmetry result between the floating and fixed-strike Asian options. The proof involves a change of num´eraireand time reversal of Brownian motion. Symmetries are very useful in option valuation and in this case, the result allows the use of more established fixed-strike pricing methods to price floating-strike Asian options. Keywords: Asian options, floating strike Asian options, put call symmetry, change of num´eraire,time reversal, Brownian motion AMS 2000 Subject Classification: Primary 60G44 Secondary 91B28 1. Introduction The purpose of this paper is to establish a useful symmetry result between floating and fixed-strike Asian options. A change of probability measure or num´eraireand a time reversal argument are used to prove the result for models where the underlying asset follows exponential Brownian motion. There are many known symmetry results in financial option pricing. Such results are useful for transferring knowledge about one type of option to another and may be used to simplify coding of one type of option when the other is already coded. However, one must take care as the transformed option may not exist in the market or have a sensible economic interpretation. These tricks become very useful for exotic options, when perhaps no closed form solution exists, but an equivalence relation holds, together with an accurate compu- tational procedure for the related class. -
Exact Simulation of the SABR Model
This article was downloaded by: [137.189.59.117] On: 28 August 2017, At: 23:13 Publisher: Institute for Operations Research and the Management Sciences (INFORMS) INFORMS is located in Maryland, USA Operations Research Publication details, including instructions for authors and subscription information: http://pubsonline.informs.org Exact Simulation of the SABR Model http://orcid.org/0000-0002-3235-3340Ning Cai, Yingda Song, Nan Chen To cite this article: http://orcid.org/0000-0002-3235-3340Ning Cai, Yingda Song, Nan Chen (2017) Exact Simulation of the SABR Model. Operations Research 65(4):931-951. https://doi.org/10.1287/opre.2017.1617 Full terms and conditions of use: http://pubsonline.informs.org/page/terms-and-conditions This article may be used only for the purposes of research, teaching, and/or private study. Commercial use or systematic downloading (by robots or other automatic processes) is prohibited without explicit Publisher approval, unless otherwise noted. For more information, contact [email protected]. The Publisher does not warrant or guarantee the article’s accuracy, completeness, merchantability, fitness for a particular purpose, or non-infringement. Descriptions of, or references to, products or publications, or inclusion of an advertisement in this article, neither constitutes nor implies a guarantee, endorsement, or support of claims made of that product, publication, or service. Copyright © 2017, INFORMS Please scroll down for article—it is on subsequent pages INFORMS is the largest professional society in the world for professionals in the fields of operations research, management science, and analytics. For more information on INFORMS, its publications, membership, or meetings visit http://www.informs.org OPERATIONS RESEARCH Vol. -
Quanto Lookback Options
Quanto lookback options Min Dai Institute of Mathematics and Department of Financial Mathematics Peking University, Beijing 100871, China (e-mails: [email protected]) Hoi Ying Wong Department of Statistics, Chinese University of HongKong, Shatin, Hong Kong, China (e-mail: [email protected]) Yue Kuen Kwoky Department of Mathematics, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China (e-mail: [email protected]) Date of submission: 1 December, 2001 Abstract. The lookback feature in a quanto option refers to the payoff structure where the terminal payoff of the quanto option depends on the realized extreme value of either the stock price or the exchange rate. In this paper, we study the pricing models of European and American lookback option with the quanto feature. The analytic price formulas for two types of European style quanto lookback options are derived. The success of the analytic tractability of these quanto lookback options depends on the availability of a succinct analytic representation of the joint density function of the extreme value and terminal value of the stock price and exchange rate. We also analyze the early exercise policies and pricing behaviors of the quanto lookback option with the American feature. The early exercise boundaries of these American quanto lookback options exhibit properties that are distinctive from other two-state American option models. Key words: Lookback options, quanto feature, early exercise policies JEL classification number: G130 Mathematics Subject Classification (1991): 90A09, 60G44 y Corresponding author 1 1. Introduction Lookback options are contingent claims whose payoff depends on the extreme value of the underlying asset price process realized over a specified period of time within the life of the option. -
Static Replication of Exotic Options Andrew Chou JUL 241997 Eng
Static Replication of Exotic Options by Andrew Chou M.S., Computer Science MIT, 1994, and B.S., Computer Science, Economics, Mathematics, Physics MIT, 1991 Submitted to the Department of Electrical Engineering and Computer Science in partial fulfillment of the requirements for the degree of Doctor of Philosophy at the MASSACHUSETTS INSTITUTE OF TECHNOLOGY June 1997 () Massachusetts Institute of Technology 1997. All rights reserved. Author ................. ......................... Department of Electrical Engineering and Computer Science April 23, 1997 Certified by ................... ............., ...... .................... Michael F. Sipser Professor of Mathematics Thesis Supervisor Accepted by .................................. A utlir C. Smith Chairman, Department Committee on Graduate Students .OF JUL 241997 Eng. •'~*..EC.•HL-, ' Static Replication of Exotic Options by Andrew Chou Submitted to the Department of Electrical Engineering and Computer Science on April 23, 1997, in partial fulfillment of the requirements for the degree of Doctor of Philosophy Abstract In the Black-Scholes model, stocks and bonds can be continuously traded to replicate the payoff of any derivative security. In practice, frequent trading is both costly and impractical. Static replication attempts to address this problem by creating replicating strategies that only trade rarely. In this thesis, we will study the static replication of exotic options by plain vanilla options. In particular, we will examine barrier options, variants of barrier options, and lookback options. Under the Black-Scholes assumptions, we will prove the existence of static replication strategies for all of these options. In addition, we will examine static replication when the drift and/or volatility is time-dependent. Finally, we conclude with a computational study to test the practical plausibility of static replication. -
Discretely Monitored Look-Back Option Prices and Their Sensitivities in Levy´ Models
Discretely Monitored Look-Back Option Prices and their Sensitivities in Levy´ Models Farid AitSahlia1 Gudbjort Gylfadottir2 (Preliminary Draft) May 22, 2017 Abstract We present an efficient method to price discretely monitored lookback options when the underlying asset price follows an exponential Levy´ process. Our approach extends the random walk duality results of AitSahlia and Lai (1998) originally developed in the Black- Scholes set-up and exploits the very fast numerical scheme recently developed by Linetsky and Feng (2008, 2009) to compute and invert Hilbert transforms. Though Linetsky and Feng (2009) do apply these transforms to price lookback options, they require an explicit transition probability density of the Levy´ process and impose a condition that excludes the pure jump variance gamma process, among others. In contrast, our approach is much simpler and makes use of only the characteristic function of the log-increment, which is central to Levy´ processes. Furthermore, by focusing our approach on determining the distribution function of the maximum of the Levy´ process we can also determine price sensitivities with minimal additional computational effort. 1: Department of Finance, Warrington College of Business Administration, University of Florida, Gainesville, Florida, 32611. Tel: 352.392.5058. Fax: 352.392.0301. email: [email protected] . (Corresponding author) 2: Bloomberg L.P., 731 Lexington Ave., New York, 10022. Email: [email protected] 1 1 Introduction Lookback options provide the largest payoff potential because their holders can choose (in hindsight) the exercise date with the advantage of having full path information. Lookback options were initially devised mainly for speculative purposes but starting with currency mar- kets, their adoption has been increasing significantly, especially in insurance and structured products during the past decade. -
Lecture 2: Options and Investments
Binnenlandse Franqui leerstoel –VUB December, 2004 Opties André Farber Lecture 2: Options and investments 1. Introduction binomial option pricing – Review 1-period binomial option pricing formulas: σ ∆t u = e d = 1/u -r∆t f = [ p fu + (1-p) fd ] e p = (er∆t – d)/(u - d) 2. Black Scholes formula (European option on non dividend paying stock) -rT European call: C = S N(d1) – K e N(d2) European put: P = K N(-d2) – S N(-d1) S ln( ) Ke −rT d1 = + .5σ T σ T S ln( ) Ke −rT d 2 = − .5σ T = d1 −σ T σ T Note: Using put call parity: P = C – S + K e-rT -rT -rT = S N(d1) – K e N(d2) – S + K e -rT = K e [1 – N(d2)] – S [1 – N(d1)] -rT = K e N(-d2)] – S N(-d1) If stock pays continuous dividend yield q: replace S by S e-qT Illustration: Excel Lecture 2 worksheet B&S formula 3. American options Non dividend paying stock Call: Black Scholes formula (no early exercise) Put: No closed form solution – use binomial model -r∆t f = Max(K-S, [ p fu + (1-p) fd ] e ) Dividend paying stock (assume constant dividend yield q) No closed form solution – Use binomial model Put-Call parity: C + PV(K) = P + Se-qT Risk neutral probability of up: p = (e(r-q)∆t – d)/(u - d) Illustration: Excel Lecture 2 Binomial model 3. The Greek letters ∂f Slope Delta : δ = = f ' ∂S S -qT Black Scholes: Delta Call = N(d1) e -q∆t Binomial model: Delta = (fu – fd) / [(u-d)Se ] 1 ∂δ ∂²f Convexity Gamma: Γ = = = f " ∂S ∂S ² SS ∂f Time Theta: Θ = = f ' ∂T T ∂f Volatility Vega: = ∂σ ∂f Interest rate Rho: = ∂r Illustration: Excel Lecture 2 worksheet B&S Formula 4. -
Arxiv:1605.00307V1 [Q-Fin.CP] 1 May 2016 Arteei H Etnadshoe-H 2]Models
Semi-analytic path integral solution of SABR and Heston equations: pricing Vanilla and Asian options Jan Kuklinski and Kevin Tyloo Facult´edes HEC, Universit´ede Lausanne, CH-1015 Lausanne, Switzerland (Dated: September 14, 2018) We discuss a semi-analytical method for solving SABR-type equations based on path integrals. In this approach, one set of variables is integrated analytically while the second set is integrated numerically via Monte-Carlo. This method, known in the literature as Conditional Monte-Carlo, leads to compact expressions functional on three correlated stochastic variables. The methodology is practical and efficient when solving Vanilla pricing in the SABR, Heston and Bates models with time depending parameters. Further, it can also be practically applied to pricing Asian options in the β = 0 SABR model and to other β = 0 type models. Keywords: SABR/Heston semi-analytical solutions, Asian options with skew and smile I. INTRODUCTION 100 MC1 MC2 10-1 The SABR model introduced by Hagan et al. [10, 20] N−0.5 is a canonical Stochastic Volatility model: 10-2 -3 ˜ β 10 St 2 3.5 dS˜t = S0 σ˜t ρdV˜t + 1 ρ dW˜ t (1) speed ratio MC2/MC1 S0 -4 { − } 10 p Std. error 3.0 dσ˜t = νσ˜tdV˜t (2) 10-5 This framework provides a natural extension of the 2.5 Bachelier/Normal, Black-Scholes models and of the 10-6 2.0 Shifted Log-Normal equation. As discussed in [15, 17], 102 103 104 105 106 107 108 setting β = 0 and ρ = 1 leads to the Shifted Log- 10-7 ± 102 103 104 105 106 107 108 Normal model.