Identifying Cointegration by Eigenanalysis

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• Qiwei Yao — London School of Economics
• Friday 08 November 2019, 14:00-15:00
• MR12.

If you have a question about this talk, please contact Dr Sergio Bacallado.

We propose a new and easy-to-use method for identifying cointegrated components of nonstationary time series, consisting of an eigenanalysis for a certain non-negative definite matrix. Our setting is model-free, and we allow the integer-valued integration orders of the observable series to be unknown, and to possibly differ. Consistency of estimates of the cointegration space and cointegration rank is established both when the dimension of the observable time series is fixed as sample size increases, and when it diverges slowly. The proposed methodology is also extended and justified in a fractional setting. A Monte Carlo study of finite-sample performance, and a small empirical illustration, are reported.

This talk is part of the Statistics series.

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