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arXiv 1302.0465q-fin.PR
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CVA和FVA到现金抵押的衍生品交易

CVA and FVA to Derivatives Trades Collateralized by Cash

Lixin Wu

摘要:

在这篇文章中,我们结合复制定价与期望定价的衍生品交易,部分现金抵押。衍生品通过基础资产和现金复制,使用回购协议(回购)和保证金,这会产生融资成本。推导了衍生品价格的偏微分方程,得到了该方程的解,并将其分解为衍生品的无风险价值加上信用估值调整(CVA)和融资估值调整(FVA)。对于大多数导数,正如我们将要展示的,CVA可以解析或半解析地进行评估,而FVA以及导数值由于它们的相互依赖性,必须通过数值程序递归求解。在数值演示中,连续和离散的保证金修正被认为是,分别为股票看涨期权和香草利率互换。

英文摘要:

In this article, we combine replication pricing with expectation pricing for derivative trades that are partially collateralized by cash. The derivatives are replicated by underlying assets and cash, using repurchasing agreement (repo) and margining, which incur funding costs. We derive a partial differential equation (PDE) for the derivatives price, obtain and decompose its solution into the risk-free value of the derivative plus credit valuation adjustment (CVA) and funding valuation adjustment (FVA). For most derivatives, as we shall show, CVAs can be evaluated analytically or semi-analytically, while FVAs, as well as the derivatives values, will have to be solved recursively through numerical procedures due to their interdependence. In numerical demonstrations, continuous and discrete margin revisions are considered, respectively, for an equity call option and a vanilla interest-rate swaps.

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