TY - JOUR AU - Benigno, Gianluca AU - Benigno, Pierpaolo AU - Nisticò, Salvatore TI - Risk, Monetary Policy and the Exchange Rate JF - National Bureau of Economic Research Working Paper Series VL - No. 17133 PY - 2011 Y2 - June 2011 DO - 10.3386/w17133 UR - http://www.nber.org/papers/w17133 L1 - http://www.nber.org/papers/w17133.pdf N1 - Author contact info: Gianluca Benigno Department of Economics London School of Economics WC2A 2AE London WC2A 2AE United Kingdom E-Mail: g.benigno@lse.ac.uk Pierpaolo Benigno Dipartiment of Economics University of Bern 3003 Bern Switzerland E-Mail: pbenigno@luiss.it Salvatore Nisticò Sapienza Università di Roma Dipartimento di Scienze Sociali ed Economiche viale Aldo Moro 5 00185 Rome Italy Tel: +39.06.49910690 E-Mail: salvatore.nistico@uniroma1.it M1 - published as Gianluca Benigno, Pierpaolo Benigno, Salvatore Nisticò. "Risk, Monetary Policy and the Exchange Rate," in Daron Acemoglu and Michael Woodford, editors, "NBER Macroeconomics Annual 2011, Volume 26" University of Chicago Press (2012) M3 - presented at "26th Annual Conference on Macroeconomics", April 8-9, 2011 AB - In this research, we provide new empirical evidence on the importance of time-varying uncertainty for the exchange rate and the excess return in currency markets. Following an increase in monetary policy uncertainty, the dollar exchange rate appreciates in the medium run, while an increase in the volatility of productivity leads to a dollar depreciation. We propose a general-equilibrium theory of exchange rate determination based on the interaction between monetary policy and time-varying uncertainty aimed at understanding these regularities. In the model, the behaviour of the exchange rate following nominal and real volatility shocks is consistent with the empirical evidence. Furthermore we show that risk factors and interest-rate smoothing are important in accounting for the negative coefficient in the UIP regression. ER -