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We extend the classical ”martingale-plus-noise” model for high-frequency prices by an error correction mechanism originating from prevailing mispricing. The speed of price reversal is a natural measure for informational efficiency. The strength of the price reversal relative to the signal-to-noise ratio determines the signs of the return serial correlation and the bias in standard realized variance estimates. We derive the model’s properties and locally estimate it based on mid-quote returns of the NASDAQ 100 constituents. There is evidence of mildly persistent local regimes of positive and negative serial correlation, arising from lagged feedback effects and sluggish price adjustments. The model performance is decidedly superior to existing stylized microstructure models. Finally, we document intraday periodicities in the speed of price reversion and noise-to-signal ratios.
Very few people doubt that it is a fundamental demand of justice that members of legal-political normative orders ought to have legal rights that define their basic standing as subjects of such an order. But when it comes to the concrete understanding of such rights, debates abound. What is the nature of these rights – are they an expression of the sovereign will of individuals, or are they based on important human interests? How should these rights be justified – do they have a particular moral ground, and if so, only one or many?
Der urheberrechtlich konnotierte Begriff des Plagiats zählt zu den anerkannten Grundtatbeständen wissenschaftlichen Fehlverhaltens. Der Beitrag zeigt indes, dass das Urheberrecht und das Wissenschaftsrecht keine konzentrischen Kreise bilden, sondern unterschiedliche Zwecke mit je anderen Regelungskonzepten verfolgen. Die Übernahme urheberrechtlicher Argumentationsmuster in die Wissenschaftsethik und das Wissenschaftsrecht erschwert die Herausbildung spezifisch wissenschaftsbezogener Kriterien zur Beurteilung wissenschaftlichen Fehlverhaltens. Als Alternative entwickelt der Beitrag ein Konzept wissenschaftlicher Redlichkeit, das sich am Recht gegen unlauteren Wettbewerb orientiert. Dazu werden weitreichende teleologische und strukturelle Gemeinsamkeiten des Lauterkeitsrechts und der Regeln zu wissenschaftlichem Fehlverhalten aufgedeckt. Insbesondere verfolgen beide Materien eine funktionale Teleologie. Das Lauterkeitsrecht gewährleistet die Funktionsbedingungen des wirtschaftlichen Wettbewerbs, das Verbot wissenschaftlichen Fehlverhaltens sichert die Funktionsbedingungen und damit zugleich den Zielerreichungsgrad des offenen Wissenschaftsprozesses und des Wettbewerbs um wissenschaftliche Reputation.
This paper reexamines the current legal landscape regarding the protection of trade marks and other industrial property rights in signs on the Internet. It is based on a comparative analysis of EU and national laws, in particular, German, U.S., and U.K. law. It starts with a short restatement of the principles governing trade mark conflicts that occur within a particular jurisdiction (part 2) and proceeds to the regulation of transnational disputes (part 3). This juxtaposition yields two basic approaches. Whereas trade mark conflicts within closed legal systems are generally adjudicated according to a binary either/or logic, transnational disputes are and should indeed be solved in a way that leads to a fair coexistence of conflicting trade mark laws and rights under multiple laws. This paper explains how geolocation technologies can alleviate the implementation of the principle of fair coexistence in concrete cases.
Die Geschichte des Urheberrechts ist die Geschichte seiner Expansion. In diesem Beitrag wird die Expansionsgeschichte des Urheberrechts, in der das Urheberrechtsgesetz 1965 letztlich nur eine, wenn auch wichtige Episode darstellt, in Anlehnung an Thesen des 1944 erschienenen, wirtschaftssoziologischen Klassikers „The Great Transformation. Politische und ökonomische Ursprünge von Gesellschaften und Wirtschaftssystemen“ von Karl Polanyi gedeutet. Im Zentrum steht dabei der Gedanke, dass in einer Informationsgesellschaft, deren Wirtschaft auf Märkten und Wettbewerb beruht, alle neuen Technologien und hiermit verknüpften immateriellen Leistungsergebnisse über Ausschließlichkeitsrechte zugeordnet werden müssen, damit gewährleistet ist, dass alle relevanten In- und Outputfaktoren handelbar sind, so dass ihre jeweiligen Erzeuger marktbasierte Einkünfte erzielen können. Der Aufsatz erläutert, dass sich diese Kommodifizierungslogik in der jüngeren deutschen Urheberrechtsgeschichte nachweisen lässt. Auf die soziologische und rechtliche Relevanz der entgegengesetzten Zugangsnorm wird im Schlussteil hingewiesen.
We document that natural disasters significantly weaken the stability of banks with business activities in affected regions, as reflected in lower z-scores, higher probabilities of default, higher non-performing assets ratios, higher foreclosure ratios, lower returns on assets and lower bank equity ratios. The effects are economically relevant and suggest that insurance payments and public aid programs do not sufficiently protect bank borrowers against financial difficulties. We also find that the adverse effects on bank stability dissolve after some years if no further disasters occur in the meantime.
This paper applies the theory of structured finance to the regulation of asset backed securities. We find the current regulation in Europe (Article 405 of the CRR) and the US (Section D of Dodd-Frank Act) to be severely flawed with respect to its key intention: the imposition of a strict loss retention requirement. While nominal retention is always 5%, the true level of loss retention varies across available retention options between zero loss retention and full loss retention at the extreme ends. Based on a standard model of structured finance transactions, we propose a new risk retention metric RM measuring the level of an issuer’s skin-in-the-game. The new metric could help to achieve a better implementation of CRR/CRD-IV and DFA, by making disclosure of the RM-number compulsory for all ABS transactions. There are also implications for the operation of rating agencies. On a general level, the RM metric will be instrumental in achieving simplicity and transparency in securitizations (STS).
According to the Bank Recovery and Resolution Directive (BRRD), introduced as a lesson from the recent financial crisis, the losses a failing bank incurred should generally be borne by its investors. Before a minimum bail-in has occurred, government money can only be injected in emergency cas-es to remedy a serious disturbance in the economy and to preserve financial stability. This policy letter argues that in case of the Italian Bank Monte dei Paschi di Siena (MPS), which the Italian gov-ernment currently plans to bail out, a resolution would most likely not cause such a systemic event. A bailout contrary to the existing rules will lead to a mispricing of bank capital and retard the re-structuring of the European banking sector, the authors write. They appeal to the European Central Bank, the Systemic Risk Board and the EU Commission to follow the rules as the test-case MPS will have a direct impact on the credibility of the new BRRD regime and the responsible institutions.
The Capital Markets Union-project of the European Commission aims for an increase of marketbased debt financing of small and medium-sized enterprises (SMEs), complementing bank lending. In this essay we argue that rather than focussing on pure non-bank lending, a reasonable mix of bankand market-based financing should be considered. Banks are said to have a comparative advantage in critical lending functions such as credit screening, debtor monitoring and debt renegotiation. All forms of lending require a persistent skin-in-the-game of critical players in order to be effective. The regulator should insist on full disclosure of skin-in-the-game, thereby improving capital allocation and reducing systemic risks.