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  1. NTU Theses and Dissertations Repository
  2. 管理學院
  3. 國際企業學系
Please use this identifier to cite or link to this item: http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/36150
Title: 模型不確定性下之選擇權定價
Option Pricing under Model Uncertainty
Authors: Chia-Ming Liu
劉家銘
Advisor: 巫和懋
Keyword: 模型不確定性,選擇權定價,極大極小化方法,
model uncertainty,option pricing,maxmin approach,
Publication Year : 2004
Degree: 碩士
Abstract: 本文主要分析當市場上具有「模型不確定(Model Uncertainty)」的現象時,選擇權要如何進行定價。在研究的方法上,我們主要利用單期代表性個人的模型,並使用「極大極小化方法(Maxmin Approach)」的方式來分析當市場上存在模型不確定且投資人厭惡此不確定性時,選擇權的市場均衡價格應如何決定。而從分析的結果中可以發現,當市場上的模型不確定的程度愈高時,選擇權的均衡價格會愈大,此外我們也發現模型不確定下選擇權價格的一些參數性質,也與Black-Scholes選擇權定價模型中的參數性質大致符合,其中包括了波動率對選擇權均衡價格的影響以及執行價對於選擇權均衡價格的影響。同時我們也發現,當市場上面有著模型不確定現象且只在存一個代表性個人時,傳統理論的「Put-Call Parity」依然會成立。
The main purpose of this thesis is to find out the way to price option when the model uncertainty exists in the market. First, we construct a one-period model with a representative agent who is uncertainty aversion. Then, we use the maxmin approach to derive the equilibrium market price of the option. In the result of our analysis, we find that the more the degree of the model uncertainty in the market, the higher the equilibrium market price of the option. Besides, the parameters related to the equilibrium market price of the option have the same properties with those in the Black-Scholes option pricing model, including the volatility and the strike price. Moreover, the「Put-Call Parity」 is still hold if there is only one representative agent in the market.
URI: http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/36150
Fulltext Rights: 有償授權
Appears in Collections:國際企業學系

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