We examine aggregate idiosyncratic volatility in 23 developed equity markets, measured using various methodologies, and we find no evidence of upward trends when we extend the sample till 2008. Instead, idiosyncratic volatility appears to be well described by a stationary autoregressive process...

Recent theory on exchange rate dynamics suggests that the mere announcement of regime switching from floating to fixed rates at a given future date triggers a reduction in exchange rate volatility during the interim period. Using a Markov-switching GARCH model this paper estimates the volatility...

We use a regime switching approach to model the implementation of the SNB monetary policy. The regime switching technique is crucial to assess the flexibility inherent in the SNB's monetary policy concept. The empirical findings support the idea that repo operations are instrumental in smoothing...

We present a spot price model for wholesale electricity prices which incorporates forward looking information that is available to all market players. We focus on information that measures the extent to which the capacity of the England and Wales generation park will be constrained over the next...

This paper tests for multiple equilibria in the Norwegian unemployment rate and investigates whether it displays asymmetric response to positive and negative shocks. Linear and nonlinear univariate models are employed to account for the unemployment behaviour over the period 1972-1997. Among...