Working paper series / Johann-Wolfgang-Goethe-Universität Frankfurt am Main, Fachbereich Wirtschaftswissenschaften : Finance & Accounting
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151
Despite a lot of re-structuring and many innovations in recent years, the securities transaction industry in the European Union is still a highly inefficient and inconsistently configured system for cross-border transactions. This paper analyzes the functions performed, the institutions involved and the parameters concerned that shape market and ownership structure in the industry. Of particular interest are microeconomic incentives of the main players that can be in contradiction to social welfare. We develop a framework and analyze three consistent systems for the securities transaction industry in the EU that offer superior efficiency than the current, inefficient arrangement. Some policy advice is given to select the 'best' system for the Single European Financial Market.
91 rev.
To resolve the IPO underpricing puzzle it is essential to analyze who knows what when during the issuing process. In Germany, broker-dealers make a market in IPOs during the subscription period. We examine these pre-issue prices and find that they are highly informative. They are closer to the first price subsequently established on the exchange than both the midpoint of the bookbuilding range and the offer price. The pre-issue prices explain a large part of the underpricing left unexplained by other variables. The results imply that information asymmetries are much lower than the observed variance of underpricing suggests.
91
Who knows what when? : The information content of pre-IPO market prices : [Version March/June 2002]
(2002)
To resolve the IPO underpricing puzzle it is essential to analyze who knows what when during the issuing process. In Germany, broker-dealers make a market in IPOs during the subscription period. We examine these pre-issue prices and find that they are highly informative. They are closer to the first price subsequently established on the exchange than both the midpoint of the bookbuilding range and the offer price. The pre-issue prices explain a large part of the underpricing left unexplained by other variables. The results imply that information asymmetries are much lower than the observed variance of underpricing suggests.
90
We propose a new framework for modelling time dependence in duration processes on financial markets. The well known autoregressive conditional duration (ACD) approach introduced by Engle and Russell (1998) will be extended in a way that allows the conditional expectation of the duration process to depend on an unobservable stochastic process, which is modelled via a Markov chain. The Markov switching ACD model (MSACD) is a very flexible tool for description and forecasting of financial duration processes. In addition the introduction of an unobservable, discrete valued regime variable can be justified in the light of recent market microstructure theories. In an empirical application we show, that the MSACD approach is able to capture several specific characteristics of inter trade durations while alternative ACD models fail. Furthermore, we use the MSACD to test implications of a sequential trade model.
064
Competition for order flow can be characterized as a coordination game with multiple equilibria. Analyzing competition between dealer markets and a crossing network, we show that the crossing network is more stable for lower traders’ disutilities from unexecuted orders. By introducing private information, we prove existence of a unique equilibrium with market consolidation. Assets with low volatility and large volumes are traded on crossing networks, others on dealer markets. Efficiency requires more assets to be traded on crossing networks. If traders’ disutilities differ sufficiently, a unique equilibrium with market fragmentation exists. Low disutility traders use the crossing network while high disutility traders use the dealer market. The crossing network’s market share is inefficiently small.
14
Die mit unterschiedlichen Organisationsformen des Wertpapierhandels einhergehende Liquidität und ihre Messung ist eine der zentralen Fragen im Zusammenhang mit der Gestaltung von Wertpapiermärkten. Zunächst wird die Eignung verschiedener in der Literatur vorgeschlagener Liquiditätsmaße diskutiert. Anhand einer Serie von Marktexperimenten wird dann die Liquidität der grundsätzlichen Ausgestaltungsformen des Wertpapierhandels - Gesamtkursermittlung, kontinuierliche Auktion und Market-Maker-System - miteinander verglichen.
Sowohl das Handelsvolumen als auch das von ROLL (1984) vorgeschlagene Maß sind offenbar für den Vergleich der Liquidität unterschiedlich organisierter Wertpapiermärkte nicht geeignet. Eine aufgrund theoretischer Überlegungen prognostizierte Überschätzung der Transaktionskosten bei der Gesamtkursermittlung kann empirisch bestätigt werden.
Die explizite Geld-Brief-Spanne ist dagegen grundsätzlich ein geeignetes Liquiditätsmaß. Mit den Daten der experimentellen Märkte läßt sich auch für die Gesamtkursermittlung eine solche Spanne ermitteln. Sie erweist sich als niedriger als die Spanne in der kontinuierlichen Auktion und dem Market-Maker-Markt. Jedoch ist auch die Geld-Brief-Spanne mit Vorsicht zu interpretieren. Es wird gezeigt, daß unter bestimmten Umständen systematische Verzerrungen existieren können. In den hier untersuchten experimentellen Märkten ließen sich diese identifizieren. Bei Untersuchungen anhand von Felddaten ist dies jedoch nicht ohne weiteres möglich, so daß hier die Gefahr von Verzerrungen durchaus real ist.