scholarly journals Optimal Foreign Exchange Rate Intervention in Lévy Markets

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Masimba Aspinas Mutakaya ◽  
Eriyoti Chikodza ◽  
Edward T. Chiyaka
Keyword(s):  
Exchange Rate ◽  
Central Bank ◽  
Impulse Control ◽  
Value Function ◽  
Quasivariational Inequalities ◽  
Expected Number ◽  
A Value ◽  
The Exchange Rate ◽  
Intervention Costs ◽  
Exchange Rate Intervention

This paper considers an exchange rate problem in Lévy markets, where the Central Bank has to intervene. We assume that, in the absence of control, the exchange rate evolves according to Brownian motion with a jump component. The Central Bank is allowed to intervene in order to keep the exchange rate as close as possible to a prespecified target value. The interventions by the Central Bank are associated with costs. We present the situation as an impulse control problem, where the objective of the bank is to minimize the intervention costs. In particular, the paper extends the model by Huang, 2009, to incorporate a jump component. We formulate and prove an optimal verification theorem for the impulse control. We then propose an impulse control and construct a value function and then verify that they solve the quasivariational inequalities. Our results suggest that if the expected number of jumps is high the Central Bank will intervene more frequently and with large intervention amounts hence the intervention costs will be high.

scholarly journals A Theory of Foreign Exchange Interventions

2021 ◽  
Author(s):  
Sebastián Fanelli ◽  
Ludwig Straub
Keyword(s):  
Exchange Rate ◽  
Central Bank ◽  
Interest Rates ◽  
Open Economy ◽  
Small Open Economy ◽  
Bond Markets ◽  
Pecuniary Externality ◽  
Optimal Intervention ◽  
The Exchange Rate ◽  
Intervention Policy

Abstract We study a real small open economy with two key ingredients (1) partial segmentation of home and foreign bond markets and (2) a pecuniary externality that makes the real exchange rate excessively volatile in response to capital flows. Partial segmentation implies that, by intervening in the bond markets, the central bank can affect the exchange rate and the spread between home- and foreign-bond yields. Such interventions allow the central bank to address the pecuniary externality, but they are also costly, as foreigners make carry trade profits. We analytically characterize the optimal intervention policy that solves this trade-off: (1) the optimal policy leans against the wind, stabilizing the exchange rate; (2) it involves smooth spreads but allows exchange rates to jump; (3) it partly relies on “forward guidance,” with non-zero interventions even after the shock has subsided; (4) it requires credibility, in that central banks do not intervene without commitment. Finally, we shed light on the global consequences of widespread interventions, using a multi-country extension of our model. We find that, left to themselves, countries over-accumulate reserves, reducing welfare and leading to inefficiently low world interest rates.

Europäische Zentralbank: kontraproduktive unkonventionelle Geldpolitik und der Euro-Wechselkurs / European Central Bank: counter-productive unconventional monetary policy and the exchange rate

ORDO ◽  
2014 ◽  
Vol 65 (1) ◽  
Author(s):  
Ansgar Belke
Keyword(s):  
Monetary Policy ◽  
Exchange Rate ◽  
Central Bank ◽  
European Central Bank ◽  
Quantitative Easing ◽  
Unconventional Monetary Policy ◽  
European Central ◽  
The Exchange Rate ◽  
Europäische Zentralbank

ZusammenfassungDie EZB sollte der Versuchung widerstehen, die Deflationsgefahr in der Eurozone durch zusätzliche Varianten unkonventioneller Geldpolitik (z.B. „Quantitative Easing“) zu bekämpfen. Was in den USA oder in Großbritannien geklappt haben mag, wird in der Eurozone nicht funktionieren. Es besteht gar die Gefahr einer Deflationsspirale, wie dieser Beitrag zeigt. Eingebettet werden die Argumente in die aktuelle Debatte um den „zu starken“ Euro.

scholarly journals Modeling Sources of Asymmetry in the Volatility of the Moroccan Dirham Exchange Rate

2021 ◽  
Vol 8 (4) ◽  
pp. 31
Author(s):  
KHATTAB Ahmed ◽  
SALMI Yahya
Keyword(s):  
Exchange Rate ◽  
Central Bank ◽  
Exchange Rates ◽  
Foreign Exchange ◽  
Selection Criterion ◽  
Econometric Models ◽  
Interbank Market ◽  
Foreign Exchange Reserves ◽  
Central Bank Intervention ◽  
The Exchange Rate

The main objective of this paper is to study the sources of asymmetry in the volatility of the bilateral exchange rates of the Moroccan dirham (MAD), against the EUR and the USD using the asymmetric econometric models of the ARCH-GARCH family. An empirical analysis was conducted on daily central bank data from March 2003 to March 2021, with a sample size of 4575 observations. Central bank intervention in the foreign exchange (interbank) market was found to affect the asymmetry in the volatility of the bilateral EUR/MAD and USD/MAD exchange rates. Specifically, sales of foreign exchange reserves by the monetary authority cause a fall in the exchange rate, which means that the market response to shocks is asymmetric. Finally, the selection criterion (AIC) allowed us to conclude that the asymmetric model AR(1)-TGARCH(1,1) is adequate for modeling the volatility of the exchange rate of the Moroccan dirham.

scholarly journals FX Intervention to Stabilize or Manipulate the Exchange Rate? Inference from Profitability

2020 ◽  
Vol 20 (90) ◽  
Author(s):  
Damiano Sandri
Keyword(s):  
Exchange Rate ◽  
Central Bank ◽  
Medium Term ◽  
The Face ◽  
Exchange Rate Misalignment ◽  
The Exchange Rate ◽  
Fundamental Values ◽  
Shed Light

We analyze the profitability of FX swaps used by the central bank of Brazil to shed light on the rationale for FX intervention. We find that swaps are profitable in expectation, suggesting that FX intervention is used to stabilize the exchange rate in the face of temporary excessive movements rather than to manipulate it away from fundamental values. In line with this interpretation, we find that the scale of FX intervention responds to the degree of exchange rate misalignment relative to UIP conditions. We also document that intervention is more aggressive when there is less uncertainty about the medium-term level of the exchange rate and when the exchange rate is overvalued rather than undervalued.

scholarly journals Effectiveness of Monetary Policy in Morocco: Stability and Implications

2020 ◽  
Vol 3 (1) ◽  
pp. 14-28
Author(s):  
MERYEM ERRAITEB
Keyword(s):  
Monetary Policy ◽  
Exchange Rate ◽  
Interest Rate ◽  
Central Bank ◽  
Narrow Sense ◽  
New Approach ◽  
Monetary Authorities ◽  
Aggregate Growth ◽  
The Exchange Rate ◽  
Effectiveness Of Monetary Policy

The purpose of this study is evaluating the effectiveness of monetary policy in Morocco. The results suggest that the monetary authorities must get out of the narrowness of logic monetarist by adopting a new approach which explicitly privileges the targeting of inflation as the ultimate goal, while referring to a multitude of indicators likely to guide the Central Bank in the conduct of its monetary policy as the exchange rate and interest rate next to the M3 aggregate growth rule. Thus, monetary authorities should out of the narrow sense monetarist by adopting a new approach that focuses explicitly targeting inflation as the ultimate goal, while referring to a multitude of indicators to guide the central bank in the conduct of monetary policy as exchange rate and Interest rate ET and this, alongside the growth rule M3.  

scholarly journals The Effectiveness of the Monetary Transmission Mechanism in Ukraine since the Transition to Inflation Targeting

2019 ◽  
pp. 19-37
Author(s):  
Oleksandr Zholud ◽  
Volodymyr Lepushynskyi ◽  
Sergiy Nikolaychuk
Keyword(s):  
Exchange Rate ◽  
Interest Rate ◽  
Central Bank ◽  
Interest Rates ◽  
Inflation Targeting ◽  
Monetary Transmission ◽  
Interest Rate Policy ◽  
Leading Role ◽  
The Exchange Rate ◽  
The Interest Rate

This paper analyzes the effectiveness of monetary transmission channels in Ukraine since the National Bank of Ukraine (NBU) transitioned to inflation targeting and after the central bank established its new approach to monetary policy implementation. The authors conclude that the central bank has sufficient control over short-term interest rates in the interbank market and that it uses them to influence other financial market indicators. At the same time, further transmission via the interest rate channel is constrained by weak lending and the banking system’s slow post-crisis recovery. The exchange rate channel remains the most powerful avenue of monetary transmission. After the NBU switched to a floating exchange rate and an active interest rate policy, its key rate became a means of influencing exchange rates. The exchange rate channel’s leading role is expected to gradually decrease but remains important, as is typical for small open economies.

Sign in / Sign up

Export Citation Format

Share Document