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hedging strategies by a nonlinear version of the Black-Scholes PDE. The core of the paper consists of a simulation study. We …
Persistent link: https://www.econbiz.de/10005859384
the time-varying correlation of US stock and bond returns. Key ingredients are time-varyingrst and second moments of …. 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 solve an intertemporal portfolio problem with correlation risk, using a new approach for the … simultaneous modeling of stochastic correlation and volatility. The solutions of the model are in closed form and include an … optimal portfolio demand for hedging correlation risk. We calibrate the model and find that the optimal demand to hedge …
Persistent link: https://www.econbiz.de/10005858523
allow for efficient simulation of portfolio loss distributions. …
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
We introduce a new analytical approach to price American options. Using an explicit and intuitive proxy for the exercise rule, we derive tractable pricing formulas using a short-maturity asymptotic expansion. Depending on model parameters, this method can accurately price options with...
Persistent link: https://www.econbiz.de/10005857779