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Working paper
Hierarchical PCA and Modeling Asset Correlations
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How A Credit Run Affects Asset Correlation
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Working paper
How a Credit Run Affects Asset Correlation
In: Journal of Credit Risk, Band 18, Heft 2
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Asset Correlation Estimation for Inhomogeneous Exposure Pools
In: Journal of Credit Risk, Band 15, Heft 3
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Asset Correlations and Credit Portfolio Risk: An Empirical Analysis
In: Bundesbank Series 2 Discussion Paper No. 2007,13
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Working paper
Asset Correlations in Turbulent Markets and their Implications on Asset Management
In this article, the dependence structure of the asset classes stocks, government bonds, and corporate bonds in different market environments and its implications on asset management are investigated. Asset returns are modelled by a Markov-switching model which allows for two market regimes with completely different risk-return structures. Using major stock indices, calm and turbulent market periods are identified for the time period between 1987 and 2009 and the correlation structures in the respective periods are compared. It turns out that the correlations between as well as within the asset classes under investigation are far from being stable and vary significantly between calm and turbulent market periods as well as in time. Finally, the impact of these findings is examined in a portfolio optimization context. To accomplish this, a case study using the mean-variance and the mean-conditional-value-at-risk framework as well as two levels of risk aversion is conducted. The results show that an explicit consideration of different market conditions in the modelling framework yields better portfolio performance as well as lower portfolio risk compared to standard approaches. These findings hold true for all investigated optimization frameworks and risk-aversion levels.
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Book-To-Market Equity and Asset Correlations - An International Study
In: International Review of Economics & Finance, Band 79, Heft 258-274
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Fractional integration versus level shifts: the case of realized asset correlations
In: Statistical papers, Band 54, Heft 4, S. 977-991
ISSN: 1613-9798
Estimating Asset Correlations from Stock Prices or Default Rates: Which Method is Superior?
In: Bundesbank Series 2 Discussion Paper No. 2008,04
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Investigating Implied Asset Correlation and Capital Requirements: Empirical Evidence from the Italian Banking System
In: Banks and Bank Systems, Band 6, Heft 2
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Estimating asset correlations from stock prices or default rates: which method is superior?
In: Discussion paper
In: Series 2, Banking and financial studies 2008,04