The "monetary trilemma" - the hypothesis that full monetary policy autonomy, exchange rate stability, and financial openness cannot simultaneously be achieved - has long been studied. Recently, holding international reserves (IR) has become an important policy instrument, insuring against...

We begin by examining determinants of aggregate foreign exchange reserve holdings by central banks (size of issuing country's economy and financial markets, ability of the currency to hold value, and inertia). But understanding the determination of reserve holdings probably requires going beyond...