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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

LMM利率模型下可取消利率交換評價與風險管理 / Cancelable Swap Pricing and Risk Management under LIBOR Market Model

廖家揚, Liao, Chia Yang Unknown Date (has links)
許多公司在發行公司債的時候,會給此公司債一個可提前贖回的特性,此種公司債稱為可贖回公司債(Callable Bond),用來規避利率變動風險的金融商品也與我們熟知的利率交換不同,稱為可取消利率交換(Cancelable Swap)。其實可取消利率交換可以拆解成百慕達利率交換選擇權(Bermudan Swaption)加上利率交換,由於利率交換之評價較簡單也有市場一致的評價方法,因此百慕達利率交換選擇權便成為評價的重點。 評價的部分,由於百慕達式的商品有提前履約的特性,造成其封閉解不存在,因此需要利用其他的近似解或是數值方法來求它的價格。由於本文採用BGM(1997)的市場利率模型(Libor Market Model),其高維度的性質導致數狀方法與有限差分法使用起來較無效率,因此本文選擇使用蒙地卡羅法做為評價的方法,同時利用Longstaff and Schwartz(2001)的最小平方蒙地卡羅法(Least Squares Monte Carlo Method)來解決提前履約的問題。 最後,本文將採用2種利率波動度假設與2種不同利率間相關係數的假設,共4種組合,在歐式利率交換選擇權的市場波動度下進行校準,使用校準出來的參數進行評價來得到4種價格。再進行商品的敏感度分析(Sensitivity Analysis)和風險值(Value at Risk)的計算。
2

狀態相依跳躍風險與美式選擇權評價:黃金期貨市場之實證研究 / State-dependent jump risks and American option pricing: an empirical study of the gold futures market

連育民, Lian, Yu Min Unknown Date (has links)
本文實證探討黃金期貨報酬率的特性並在標的黃金期貨價格遵循狀態轉換跳躍擴散過程時實現美式選擇權之評價。在這樣的動態過程下,跳躍事件被一個複合普瓦松過程與對數常態跳躍振幅所描述,以及狀態轉換到達強度是由一個其狀態代表經濟狀態的隱藏馬可夫鏈所捕捉。考量不同的跳躍風險假設,我們使用Merton測度與Esscher轉換推導出在一個不完全市場設定下的風險中立黃金期貨價格動態過程。為了達到所需的精確度,最小平方蒙地卡羅法被用來近似美式黃金期貨選擇權的價值。基於實際市場資料,我們提供實證與數值結果來說明這個動態模型的優點。 / This dissertation empirically investigates the characteristics of gold futures returns and achieves the valuation of American-style options when the underlying gold futures price follows a regime-switching jump-diffusion process. Under such dynamics, the jump events are described as a compound Poisson process with a log-normal jump amplitude, and the regime-switching arrival intensity is captured by a hidden Markov chain whose states represent the economic states. Considering the different jump risk assumptions, we use the Merton measure and Esscher transform to derive risk-neutral gold futures price dynamics under an incomplete market setting. To achieve a desired accuracy level, the least-squares Monte Carlo method is used to approximate the values of American gold futures options. Our empirical and numerical results based on actual market data are provided to illustrate the advantages of this dynamic model.

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