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http://ssrn.com/abstract=1354495
 
 

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Predictability and 'Good Deals' in Currency Markets


Richard M. Levich


New York University - Stern School of Business; National Bureau of Economic Research (NBER)

Valerio Potì


University College Dublin (UCD) - School of Business; Catholic University S.C. Piacenza

February 2009

NYU Working Paper No. FIN-08-007

Abstract:     
This paper studies predictability of currency returns over the period 1971-2006. To assess the economic significance of predictability, we construct an upper bound on the explanatory power of predictive regressions. The upper bound is motivated by "no good-deal" restrictions that rule out unduly attractive investment opportunities. We find evidence that predictability often exceeds this bound. Excess-predictability is highest in the 1970s and tends to decrease over time, but it is still present in thefinal part of the sample period. Moreover, periods of high and low predictability tend to alternate. These stylized facts pose a serious challenge to Fama's (1970) Efficient Market Hypothesis but are consistent with Lo's (2004) Adaptive Market Hypothesis, coupled with slow convergence towards efficient markets. Strategies that attempt to exploit excess-predictability are very sensitive to transaction costs but those that exploit monthly predictability remain attractive even after realistic levels oftransaction costs are taken into account and are not spanned either by the Fama and French (1993) equity-based factors or by the AFX Currency Management Index.

Number of Pages in PDF File: 51

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Date posted: March 9, 2009  

Suggested Citation

Levich, Richard M. and Potì, Valerio, Predictability and 'Good Deals' in Currency Markets (February 2009). NYU Working Paper No. FIN-08-007. Available at SSRN: http://ssrn.com/abstract=1354495

Contact Information

Richard M. Levich (Contact Author)
New York University - Stern School of Business ( email )
Stern School of Business
44 West 4th Street
New York, NY 10012-1126
United States
212-998-0422 (Phone)
212-995-4256 (Fax)
National Bureau of Economic Research (NBER)
1050 Massachusetts Avenue
Cambridge, MA 02138
United States
Valerio Potì
University College Dublin (UCD) - School of Business ( email )
Ireland
Catholic University S.C. Piacenza ( email )
Via Emilia Parmense, 84
Piacenza
United States
HOME PAGE: http://docenti.unicatt.it/ita/valerio_poti/
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