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arXiv 0908.4299q-fin.PRq-fin.RM
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相关性分解,copula信用违约模型与套利

Correlation breakdown, copula credit default models and arbitrage

Rodanthy Tzani, Alexios P. Polychronakos

摘要:

最近的“相关性崩溃”的信用违约互换,其中模型的相关性必须超过100%,以重现超高级份额的市场价格的建模,进行了分析,并认为是一个基本的市场不一致,而不是一个不足的具体模型。因此,在这种情况下,市场面临套利的可能性。给出了特定条件下套利组合的一般构造方法。

英文摘要:

The recent "correlation breakdown" in the modeling of credit default swaps, in which model correlations had to exceed 100% in order to reproduce market prices of supersenior tranches, is analyzed and argued to be a fundamental market inconsistency rather than an inadequacy of the specific model. As a consequence, markets under such conditions are exposed to the possibility of arbitrage. The general construction of arbitrage portfolios under specific conditions is presented.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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