Das Optionspreismodell von Black/Scholes hat sich zum Industrie-Standard für die Bewertung von Aktienoptionen entwickelt. In diesem Modell wird die Annahme einer konstanten Volatilität der Kursveränderungen getroffen. Der Befund zahlreicher empirischer Untersuchungen, dass sich Volatilität...

This paper evaluates the profitability of applying four different volatility forecasting models to the trading of straddles on the German stock market index DAX. Special care has been taken to use simultaneous intra-day prices and realistic transaction costs. Furthermore, straddle positions were...

This study investigates whether the expansion of day-care places for under-three-year-old children in East and West Germany from 2007 to 2011 has improved the subjective well-being for mothers and fathers with a youngest child in this age group. We extend existing cross-sectional country...