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Modeling the interdependence of volatility and inter-transaction duration processes

Grammig, Joachim; Wellner, Marc - 1999

simultaneous estimation of the interdependent duration-volatility model. In an empirical application we utilize the model for an … indirect test of the hypothesis that volatility is caused by private information that affects prices when informed investors … trade. The result that volatility shocks significantly increase expected inter-transaction durations supports this …

Persistent link: https://www.econbiz.de/10009579173

Semiparametric diffusion estimation and application to a stock market index

Härdle, Wolfgang; Kleinow, Torsten; Korostelev, … - 2001

The analysis of diffusion processes in financial models is crucially dependent on the form of the drift and diffusion coefficient functions. A methodology is proposed for estimating and testing coefficient functions for ergodic diffusions that are not directly observable. It is based on...

Persistent link: https://www.econbiz.de/10009613611

Fractional cointegration and tests of present value models

Caporale, Guglielmo Maria; Gil-Alaña, Luis A. - 2000

This paper tests the validity of Present Value (PV) models of stock prices by employing a two-step strategy for testing the null hypothesis of no cointegration against alternatives which are fractionally cointegrated. Monte Carlo simulations are conducted to evaluate the power and size...

Persistent link: https://www.econbiz.de/10009582383

Implied volatility string dynamics

Fengler, Matthias; Härdle, Wolfgang; Mammen, Enno - 2003

value at risk computations and scenario analysis. -- Implied Volatility Surface ; Smile ; Generalized Additive Models …A primary goal in modelling the dynamics of implied volatility surfaces (IVS) aims at reducing complexity. For this …, neglects the degenerated string structure of the implied volatility data and may result in a severe modelling bias. We propose …

Persistent link: https://www.econbiz.de/10009663844

On the small sample properties of weak exogeneity tests in cointegrated VAR models

Brüggemann, Ralf - 2002

We investigate the small sample properties of two types of weak exogeneity tests in cointegrated VAR models that are frequently used in applied work. The first one is the standard Likelihood Ratio (LR) test in the Johansen framework. The second test is based on mapping the cointegrated VAR model...

Persistent link: https://www.econbiz.de/10009620777

Smoothed influence function : another view at robust nonparametric regression

Tamine, Julien - 2001

In this work, we introduce a smoothed influence function that constitute a theoretical tool for studying the outliers robustness properties of a large class of nonparametric estimators. With this tool, we first show the nonrobustness of the Nadaraya-Watson estimator of regression. Then we show...

Persistent link: https://www.econbiz.de/10009626684

A state space model for Berlin house prices

Schulz, Rainer; Werwatz, Axel - 2001

How risky are investments in residential real estate? To answer this question, information is needed about the behavior of house prices. The hedonic methodology has become a standard approach for modelling the prices of heterogeneous assets. Although intuitively appealing, it is often criticized...

Persistent link: https://www.econbiz.de/10009614878

Selfinformative limits of bayes estimates and generalized maximum likelihood

Bunke, Olaf (contributor); Johannes, Jan (contributor) - 2003 - [Elektronische Ressource]

Persistent link: https://www.econbiz.de/10001919013

Quantile hedging

Föllmer, Hans; Leukert, Peter - 1998

which succeeds with high probability. -- Hedging ; superhedging ; Neyman Pearson lemma ; stochastic volatility ; value at … risk …

Persistent link: https://www.econbiz.de/10009574876

No free lunch for large investors

Bank, Peter - 1999

We study an extension of the classical B1ack-Scholes model which accounts for feedback effects from trading in an imperfectly elastic market. The proposed semi-martingale model may be viewed as a compromise between the diffusion approach in, e.g., (Cuoco and Cvitanic 1998), (Cvitanic and Ma...

Persistent link: https://www.econbiz.de/10009580477