The intra-daily efficacy of interventions by the Swiss National Bank (SNB) is examined for the 1986–94 period. The paper extends results from earlier studies because it uses the actual intervention exchange rates and all SNB interventions are known to the market. Our test of the signalling...

It is often argued that interventions provide news on changes in risk premia or in future monetary policy. If so, the timing of interventions offers important information for central bank watchers. One method to study the reaction function of a central bank is to consider whether the duration...