 An Examination of the Effects of Parameter MisspecificationAntje Dudenhausen and Lutz Schlögl No 22/2002, Bonn Econ Discussion Papers from University of Bonn, Bonn Graduate School of Economics (BGSE) Abstract: It is well-known that Gaussian hedging strategies are robust in the sense that they always lead to a cost process of bounded variation and that a superhedge is possible if upper bounds on the volatility of the relevant processes are available, cf. El Karoui, Jeanblanc-Picque and Shreve (1998) and in particular for applications to fixed income derivatives Dudenhausen, Schlögl and Schlögl (1998). These results crucially depend on the choice of certain ``natural'' hedge instruments which are not always available in the market and fail to hold otherwise. In this paper, the problem of optimally selecting hedging instruments from a given set of traded assets, in particular of zero coupon bonds, is studied. Misspecified hedging strategies lead to a non-vanishing cost process, which in turn depends on the particular choice of instruments. The effect of this choice on the cost process is analyzed. Referring to bond markets, a thorough study of the implications of volatility mismatching is made and explicit results are stated for a broad range of volatility scenarios. Keywords: Model misspecification; duplication of bonds; volatility mismatch; optimal selection of hedging instruments (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:zbw:bonedp:222002 Access Statistics for this paper More papers in Bonn Econ Discussion Papers from University of Bonn, Bonn Graduate School of Economics (BGSE) Contact information at EDIRC. |
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