Infinite-Variance Error Structure in Finance and Economics

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International Econometric Review
Volume:10 Issue:1
Infinite-Variance Error Structure in Finance and Economics

Infinite-Variance Error Structure in Finance and Economics

Pages : 14-23

View : 20 | Download : 12

Publication Date : 2018-04-16

Article Type : Research Paper

Abstract :Many macroeconomic and financial data exhibit large outliers and high volatility so that their returns are usually modeled to follow an infinite-variance stable process. Extreme behaviors in such data tend to exist especially for emerging markets due to frequent existence of high economic turmoil. A relatively new area of research studies that model the financial returns as infinite-variance stable errors exists for emerging markets as well as for industrialized countries. This study aims to briefly introduce the reader the concept of infinite-variance stable distributions, discuss some existing studies on unit root and co-integration tests that assume infinite-variance stable error structure, and then to point out the potential lines of research while showing the significance of this relatively new concept.
Keywords : Infinite variance errors, Stable distributions, Financial returns, Unit root tests

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