Equity Market Integration in the NAFTA Region: Evidence from Unit Root and Cointegration Tests
University of Akron - Department of Finance
Nyo Nyo A. Kyaw
Kent State University - Department of Finance
This study examines integration of the three participating equity markets before and after the 1993 passage of NAFTA based on daily, weekly, and monthly data for seven years before and after the passage of NAFTA (1988-2001). As expected, unit root tests for the overall period 1988-2001 and the two sub-periods, 1988-1993 (pre-NAFTA) and 1994-2001 (post-NAFTA), indicate that stock prices are non-stationary but stock returns are generally stationary for all three markets for all three periods. However, daily, weekly, and monthly equity prices in the three NAFTA countries are cointegrated only for the post-NAFTA period. Similarly, US stock prices are more integrated with both Canadian and Mexican stock prices after the passage of NAFTA. This evidence of increased financial integration and co-movement in NAFTA equity markets after the passage of NAFTA has important implications for policy makers and managers.
Number of Pages in PDF File: 24
Keywords: NAFTA, Cointegration, Financial Market Integration
JEL Classification: F36, F15, G15working papers series
Date posted: January 5, 2005
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