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In the context of modern portfolio theory, we compare the out-of-sample performance of 8 investment strategies which …-selling constraints. A main drawback of most empirical studies on that topic is the use of simple-testing procedures which do not account … for the effects of multiple testing. For that reason we conduct several hypothesis tests which are proposed in the …
Persistent link: https://www.econbiz.de/10008939375
We develop a finite-sample procedure to test for mean-variance efficiency and spanning without imposing any parametric assumptions on the distribution of model disturbances. In so doing, we provide an exact distribution-free method to test uniform linear restrictions in multivariate linear...
Persistent link: https://www.econbiz.de/10009746573
We develop a new test for threshold-type regime changes in the risk exposures in portfolios with a large number of financial assets whose returns exhibit an approximate factor structure. Unlike existing procedures to detect discrete shifts in factor models, our test is robust to regime-specific...
Persistent link: https://www.econbiz.de/10012853517
To circumvent the limitations of the tests for coefficients of variation and Sharpe ratio, we develop the mean-variance-ratio statistic to test for the equality of the mean-variance ratios. We prove that our proposed statistic is uniformly most powerful unbiased. In addition, we provide the...
Persistent link: https://www.econbiz.de/10013147020
; multivariate Spearman's rho ; time-varying copula ; asymptotic test theory ; hierarchical testing ; control chart theory … so far. One reason is certainly the increasing complexity of the statistical theory, which is commonly referred to as the … the copula theory with the aim of detecting significant long-term level changes in the supervisory portfolio's dependence …
Persistent link: https://www.econbiz.de/10003846947
so far. One reason is certainly the increasing complexity of the statistical theory, which is commonly referred to as the … the copula theory with the aim of detecting significant long-term level changes in the supervisory portfolio's dependence …
Persistent link: https://www.econbiz.de/10012989258
matrix whereas Duan & Wied (2018) proposed a residual based testing procedure for constant correlation matrix which allows … for time-varying marginal variances. In this chapter, we demonstrate the application of aforementioned correlation testing …
Persistent link: https://www.econbiz.de/10013171617
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