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Modeling the interdependence of volatility and inter-transaction duration processes

Grammig, Joachim; Wellner, Marc - 1999

In this paper we motivate, specify and estimate a model in which the intra-day volatilty process affects the inter-transaction duration process and vice versa. In order to solve the estimation problems implied by this interdependent formulation, we first propose a GMM estimation procedure for...

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

The market reaction to stock splits : evidence from Germany

Wulff, Christian - 1999

- signalling, liquidity, and neglected firm hypothesis – to gain further insights into their relative explanation power. This paper … increase in liquidity can be found after the split crosssectional tests do not lend any support to the hypothesis that price … changes are positively related to liquidity changes. This is in contrast to the results of Muscarella/Vetsuypens (1996) and …

Persistent link: https://www.econbiz.de/10009580473

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

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

E-privacy : evaluating a new search cost in online environments

Annacker, Dirk; Spiekermann, Sarah; Strobel, Martin - 2001

Electronic Commerce environments increasingly witness a conflict on the subject of e-privacy: While marketers want to maximize their customer knowledge and grasp the identity of their online users, consumers often want to stay anonymous and not reveal private information. The conflict suggests...

Persistent link: https://www.econbiz.de/10009615417

Quantifying the value of initial investment information

Amendinger, Jürgen; Becherer, Dirk; Schweizer, Martin - 2000

We consider an investor maximizing his expected utility from terminal wealth with portfolio decisions based on the available information flow. This investor faces the opportunity to acquire some additional initial information G.. The subjective fair value of this information for the investor is...

Persistent link: https://www.econbiz.de/10009583881

Common factors governing VDAX movements and the maximum loss

Härdle, Wolfgang; Schmidt, Peter - 2000

Based on daily VDAX data this paper analyzes the factors governing the movements of implied volatilities of options on the German stock index DAX. Using Principal Components Analysis over the sample period from 1996 to 1997, we derive common factors representing "shift" and "curvature" of the...

Persistent link: https://www.econbiz.de/10009612026

Giesecke, Kay - 2001

We propose a model of correlated multi-firm default with incomplete information. While public bond investors observe issuers' assets and defaults, we suppose that they are not informed about the threshold asset level at which a firm is liquidated. Bond investors form instead a prior on these...

Persistent link: https://www.econbiz.de/10009621426

Tax clientele effects in the German bond market

Stehle, Richard; Jaschke, Stefan R.; Wernicke, S. - 1998

This paper presents an analysis of tax clientele effects in the German government bond market from the viewpoint of private investors. The methods developed here allow the identification of bonds that are over-valued from the viewpoint of a certain tax class, the estimation of tax-specific term...

Persistent link: https://www.econbiz.de/10009574878

Flexible stochastic volatility structures for high frequency financial data

Feldmann, David; Härdle, Wolfgang; Hafner, Christian M.; … - 1998

Stochastic Volatility (SV) models are widely used in financial applications. To decide whether standard parametric restrictions are justified for a given dataset, a statistical test is required. In this paper, we develop such a test based on the linear state space representation. We provide a...

Persistent link: https://www.econbiz.de/10009578026