While it is widely agreed that Purchasing Power Parity (PPP) holds as a long-run concept the specific dynamic driving the process is largely build upon a priori economic belief rather than a thorough statistical modeling procedure. The two prevailing time series models, i.e. the exponential...

Recent studies find that a long position in at-the-money straddles consistently yields losses. This is interpreted as evidence for the non-redundancy of options and as a risk premium for volatility risk. This article analyzes this risk premium in more detail by 1) assessing the return properties...

Event studies are widely used in finance research to investigate the implications of announcements of corporate initiatives, regulatory changes, or macroeconomic shocks on stock prices. These studies are often used in a single country setting (usually the U.S.), but little work has yet been...