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A Black-Litterman Approach to Correlation Stress Testing
Company: Quantitative Finance
Company Url: Click here to open
Year Of Publication: 2013
Month Of Publication: November
Resource Link: Click here to open
Download Count: 0
View Count: 1196
Comment Num: 0
Language: English
Source: article
Who Can Read: Free
Date: 2-2-2014
Publisher: Administrator
Summary
Correlation stress testing is motivated by a well-known phenomenon: correlations change under financial crises. The adjustment of correlation matrices may be required to evaluate the potential impact of these changes. Very often, some correlations are explicitly adjusted (core correlations), with the remainder left unspecified (peripheral correlations), although it would be more natural for both core correlations and peripheral correlations to vary. However, most existing methods ignore the potential change in peripheral correlations. In this paper, we propose a Black–Litterman approach to correlation stress testing in which the stress impact on the core correlations is transmitted to the peripheral correlations through the dependence structure of the empirical correlations.
Author(s)
Yu, Philip L.H. Sign in to follow this author
Ng, F.C. Sign in to follow this author
Li, Wai Keung Sign in to follow this author
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