A good pair: alternative pairs-trading strategies |
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Authors: | R Todd Smith Xun Xu |
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Institution: | 1.Department of Economics,University of Alberta,Edmonton,Canada;2.Vestcor Investment Management Corporation,Fredericton,Canada |
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Abstract: | This paper studies alternative techniques for identifying stock pairs in a pairs-trading strategy over 1980–2014. We consider two main techniques: the distance approach and the cointegration approach. We also consider a range of parameterizations of the trading system design. Parameterization of the trading system matters for the profitability of pairs trading. We find that the cointegration approach, despite using an optimal in-sample parameterization, yields significant returns only in the 1980s. The distance approach performs better, producing significantly positive risk-adjusted returns in all sub-periods. However, when transaction costs are properly taken into account, the returns largely disappear in recent years. |
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