Ziel dieser Arbeit ist die Untersuchung der Bedeutung der Spezifikation für Ratingmodelle zur Prognose von Kreditausfallwahrscheinlichkeiten. Ausgehend von dem in der Bankenpraxis etablierten Logit-Modell werden verschiedene Modellerweiterungen diskutiert und hinsichtlich ihrer Eigenschaften...

At today's stock markets, most of the trading volume is traded electronically. Thus, also many market participants execute their order flow automatically with the help of trading algorithms. Hence, several important aspects concerning algorithmic trading are discussed. One of the main topics of...

This paper reexamines the dynamic relation between intraday trading volume and return volatility of large and small NYSE stocks in two partitioned samples, with and without identifiable public news. We argue that the sequential information arrival hypothesis (SIAH) can be tested only in periods...

Untersuchungsziel dieser finanzwissenschaftlichen Arbeit ist die Wirkung einer Tobin-Steuer als spezielle Transaktionssteuer auf das Devisen-Handelsvolumen und die Wechselkursvolatilität. Ausgangspunkt bildet das mikroökonomische Investitionsverhalten der Marktteilnehmer, das wir mit Hilfe von...

When a stock is added into the S&P 500 Index, it is automatically "cross-listed" in the index derivative markets (i.e., S&P 500 Index futures and Index options). I examined the effects of such cross-listing on the trading volume and return volatility of the underlying component stocks....

The paper develops an approach for analyzing the dynamics of a nonlinear time series that is represented by a nonparametric estimate of its one-step ahead conditional density. The approach entails examination of conditional moment profiles corresponding to certain shocks; a conditional moment...

The essays empirically show the impact of investors speculation and disagreements on the returns and trading volume of securities. The results also shed light on the central issues of price formation and investors’ trading motives in security markets.The first essay investigates whether the...