For nearly a century the US dollar has been unchallenged as the sole and later the most important reserve and intervention currency in the world. The dollar became such an important currency after the shift from the British pound which, during the gold standard, was the world's reserve currency...

We analytically derive optimal central bank portfolios in a minimum variance framework with two assets and quot;transaction demandsquot; caused by sudden stops in capital inflows. In this model, the transaction demands become less important relative to traditional portfolio objectives as debt to...

The euro is the second most important global currency after the US dollar. However, its international role has not increased since its inception in 1999. The private sector prefers using the US dollar rather than the euro because the financial market for US dollar-denominated assets is larger...

During recent years, central banks have increased the levels of their international reserves at an unprecedented pace. In this paper, we introduce new country-specific reserve data and examine determinants of the composition of international reserves. Using a dataset of 36 countries (and the...

The excess liquidity in the euro area is a product of a long period of quantitative easing. It changed the operational framework of the European Central Bank (ECB)’s monetary policy from the scarce reserves system (SRS) to the abundant reserves system (ARS). To eliminate excess liquidity and...

This paper offers an encompassing analysis of the ECB's collateral criteria between 2001 and 2013. A comprehensive database of changes to collateral criteria is compiled and structured by asset classes. The main findings can be summarized in three stylized facts: (1) Since the outbreak of the...

This paper discusses commercial banks’ demand for central bank reserves under two alternative monetary policy framework configurations, namely: (i) an interest rate corridor system with scarce liquidity, and (ii) a floor system with ample liquidity. It outlines the interaction between the...

This paper discusses commercial banks’ demand for central bank reserves under two alternative monetary policy framework configurations, namely: (i) an interest rate corridor system with scarce liquidity, and (ii) a floor system with ample liquidity. It outlines the interaction between the...

This working paper looks at excess reserves in historical context and analyzes whether they constitute a monetary policy problem for the Federal Reserve System (the "Fed") or a potentially inflationary problem for the rest of us. Generally, this analysis shows that both absolute and relative...