We show that the VIX Index structurally underestimates model-free implied volatility because its implementation omits extrapolation of the volatility smile in the tails. We use the asymptotic behavior of the volatility surface to construct a correction term that is model-independent and only...

The purpose of this paper is to analyse the predictability of earnings information before the quarterly disclosure date. Two categories of firms are contrasted: the firms that announce better quarterly earnings than the prior period and the firms that do not. The paper uses a sample of 67...

This study explores the dependency structure of S&P 500 survivor stocks. Using a hand-collected sample of stocks that survived in the S&P 500 since March 1957, we employ rescaled/range analysis to investigate survivors. First, we find nonlinearities in the return processes of survivor stocks due...

Initial coin offerings (ICOs) represent a novel funding mechanism where digital tokens are issued on the blockchain and sold to investors. One major reason for the success of this financing model is the fact that the issued tokens can immediately be traded on secondary markets. This event study...

This paper analyzes market efficiency (EMH) with the day-of-the-week effect and the changes that might appear after the outbreak of the COVID-19 pandemic, based on the example of the OMX Exchange and its indices. Before the pandemic, only the OMX Baltic All-share index was efficient; during the...

Market Maker unter Wolken – Wettereffekte am deutschen Aktienmarkt Aus der psychologischen Literatur zum Verhalten an Wertpapiermärkten ist bekannt, dass neben anderen Parametern Stimmungen und Emotionen als personale Einflussfaktoren die Renditeerwartungen und die Risikowahrnehmung von...

Der diesjährige Nobelpreis für Wirtschaftswissenschaften ist an drei Forscher "für ihre empirische Analyse von Vermögenspreisen" verliehen worden. Zwei der Laureaten haben ganz unterschiedliche Sichtweisen auf die Funktionsfähigkeit von Finanzmärkten: Während Fama die...