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Marcus F. da Silva, Eder J. A. Leão, Idaraí Santos de Santana and José Garcia Vivas Miranda
 
''Pattern of fluctuations in the exchange rate change from fixed to floating, in Brazil, Argentina and Mexico''
( 2013, Vol. 33 No.2 )
 
 
This study evaluates the reaction of exchange market, in a macroeconomic point of view, with new information came from the change of regime from fixed to floating in local currencies in Brazil, Argentina and Mexico. So, we used the method RMS (Root Mean Square), which estimates the Hurst exponent of the considered series. The Hurst exponent is a measure that is associated with macroeconomic properties such as market efficiency. The results show a pattern in the efficiency tendency of these markets that is associated with an initial drop to anti-persistent H values, followed by a rapid rise to persistence in the exact moment of regime change, also by a period of stability in persistence. This period of stability ends at the efficient market behavior (H=0.5). The average time between regime change and the efficiency was about a year for all countries considered.
 
 
Keywords: Hurst exponent, Efficiency, Fixed rate, Floating exchange rate
JEL: A1 - General Economics: General
C1 - Econometric and Statistical Methods: General
 
Manuscript Received : Mar 18 2013 Manuscript Accepted : Jun 19 2013

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