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simultaneous modeling of stochastic correlation and volatility. The solutions of the model are in closed form and include an … correlation risk is a non-negligible fraction of the myopic portfolio, which often dominates the pure volatility hedging demand …In this paper we solve an intertemporal portfolio problem with correlation risk, using a new approach for the …
Persistent link: https://www.econbiz.de/10005858523
of the time otherwise required. The proposed method is a two-step procedure, separating the estimation of the correlation …
Persistent link: https://www.econbiz.de/10005857739
We consider the modelling of rare events in financial time series,and introduce a marked point process model for the excesses of thetime series over a high threshold that combines a self-exciting processfor the exceedances with a mark (size) dependent process. This allowsrealistic models for...
Persistent link: https://www.econbiz.de/10005858382
the time-varying correlation of US stock and bond returns. Key ingredients are time-varyingrst and second moments of …. As a result,risk premiums on equity and nominal bonds comove positively through their exposureto macroeconomic volatility …. This generates a positive correlation between dividendyields and nominal yields and between stock and bond returns. High …
Persistent link: https://www.econbiz.de/10009354140
characteristics of her portfolio. This empirical study is embedded into an introduction to correlation breakdown, which can be …
Persistent link: https://www.econbiz.de/10005858133
In single-obligor default risk modelling, using a background filtration in conjunction with a suitable embedding hypothesis (generally known as H-hypothesis or immersion property) has proven a very successful tool to separate the actual default event from the model for the default arrival...
Persistent link: https://www.econbiz.de/10005858244
as exit channel. We find significant statistical evidence for the negative correlation between early stage investments … on correlation coefficients, but need to carefully consider a funds investment strategy. The conflict of objectives for …
Persistent link: https://www.econbiz.de/10005858359
In this paper, we extend the earlier results of Jeanblanc and Valchev (2003) in the single name case to the case of multiple defaults of the issuers in a concentrated industry or homo- geneous bond market. We provide solutions for the pairwise default correlations and credit spreads in an...
Persistent link: https://www.econbiz.de/10005858812
A generalized correlated random walk is a process X_k of partial sums of random variables Y_j such that (X,Y) forms a Markov chain. For a sequence X^n of such processes where each Y^n_j takes only two values, we prove weak convergence to a diffusion process whose generator is explicitly...
Persistent link: https://www.econbiz.de/10005858866
Seit Begründung der modernen Portfoliotheorie ist bekannt, daß die Portfoliovolatilität im Fall niedriger Korrelationen zwischen den Anlageklassen bei sonst gleich bleibenden Parametern ohne Renditeeinbuße reduziert wird...
Persistent link: https://www.econbiz.de/10005856981