In this paper we derive conditions for the conditional covariance matrix to be positive definite in a general vector ARCH model. The conditions can be easily extended to the diagonal vector GARCH model. For the general vector GARCH model, analytical expressions for the conditions in terms of the...

In this paper we study the changes in corporate valuation, investments, and financing choices induced by the formation of Economic and Monetary Union (EMU) in Europe. We use corporate-level data from ten countries that adopted the euro, the three EU countries that did not join EMU, as well as...

In this paper we study the changes in corporate valuations induced by the adoption of the euro as the common currency in Europe. We use corporate-evel data from ten countries that adopted the euro, the three EU countries that did not start using the euro, as well as Norway and Switzerland. We...

Most of the literature on monetary policy delegation assumes that the government can credibly commit to the delegation contract, an assumption criticized by McCallum. This paper provides foundations for the assumption that renegotiating a delegation contract can be costly by illustrating how...

Few propositions in macroeconomics are less controversial than long-run money neutrality, yet clear and robust empirical support has not been found in time series studies. Bernanke and Mihov (1998) are comparatively successful in this hunt, but their output response to monetary policy shocks...

The central bank's optimal reaction to foreign and domestic shocks is analyzed in an inflation targeting model allowing for incomplete exchange rate pass-through. Limited pass-through is incorporated through nominal rigidities in an aggregate supply-aggregate demand model derived from some...