In this we specify and jointly estimate supply, demand and price equations for four aggregate commodity groups: food, beverages, agricultural raw materials and metals. This simple structural model allows us, for each group of commodities, to incorporate stock data for the first time, and to...

We analyse the effects of insider trading on real investment and welfare, and the consequences of different regulatory policies: a disclose-or-abstain rule, ‘fair’ disclosure, laissez-faire and forbidding insider trades based on ‘precise’ information. We perform the analysis in a model...

The efficient markets hypothesis implies that, in the presence of rational investors, bubbles cannot develop. We analyse the trading behaviour of a sophisticated investor, a London goldsmith bank, during the South Sea bubble in 1720. The bank believed the stock to be overvalued, yet found it...

We ask when currency carry trades are associated with destabilizing dynamics in the foreign exchange market, and investigate the role of monetary policy rules in setting of such dynamics. In a model where the exchange rate has a long-term fundamental anchor, we find that carry trades can be...

This is an exercise in the positive economics of alternative monetary regimes. The behaviour of output and prices is compared using a stochastic specification which allows asymptotic variances to be obtained without difficulty. Free floating of exchange rates together with national money supply...

In this paper we analyze issues of symmetry and asymmetry in the workings of the EMS. We first measure how interest rates react to speculative disturbances. We find that despite the fact that speculative shocks have usually forced the offshore interest rates of the weak currencies to increase by...