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基于时变t-Copula的抵押外汇契约定价研究
抵押外汇契约 时变t Copula 违约相关性
2012/8/16
借鉴抵押债务契约的定价方法，应用时变tCopula对抵押外汇契约（CFXO）进行了定价研究。首先，给出了CFXO的理论定价模型；然后,应用时变tCopula对基于美元、日元、欧元和英镑两两之间汇率的CFXO进行了数值定价计算，其中，tCopula的相关系数是时变的，可以用来刻画标的汇率之间随时间变化的相关性。CFXO是一款新型外汇衍生产品，可以使投资者获得关于一揽子外汇资产的暴露评级，并同时...
A Copula Approach on the Dynamics of Statistical Dependencies in the US Stock Market
statistical dependency structure marginal distributions New York Stock Exchange's TAQ database
2011/3/23
We analyze the statistical dependency structure of the S&P 500 constituents in the 4-year period from 2007 to 2010 using intraday data from the New York Stock Exchange's TAQ database. With a copula-ba...
Bayesian Model Choice of Grouped t-copula
modeling dependence a priori grouping historical data
2011/3/30
One of the most popular copulas for modeling dependence structures is t-copula.Recently the grouped t-copula was generalized to allow each group to have one mem-ber only,so that a priori grouping is n...