An Invariance Property of the Common Trends under Linear Transformations of the Data

Søren Johansen, Katarina Juselius

Publikation: Working paper/Preprint Working paperForskning

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Abstract

It is well known that if X(t) is a nonstationary process and Y(t) is a linear function of X(t), then cointegration of Y(t) implies cointegration of X(t). We want to find an analogous result for common trends if X(t) is generated by a finite order VAR. We first show that Y(t) has an infinite order VAR representation in terms of its prediction errors, which are a linear process in the prediction error for X(t). We then apply this result to show that the limit of the common trends for Y(t) are linear functions of the common trends for X(t). We illustrate the findings with a small analysis of the term structure of interest rates.
OriginalsprogEngelsk
Antal sider13
StatusUdgivet - 2010
Udgivet eksterntJa

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