ARCH and GARCH models vs. martingale volatility of finance market returns
AbstractARCH and GARCH models assume either i.i.d. or 'white noise' as is usual in regression analysis, while also assuming memory in a conditional mean square fluctuation with stationary increments. We will show that ARCH/GARCH is inconsistent with uncorrelated increments, violating the i.i.d. and 'white' assumptions, and violating finance data and the efficient market hypothesis as well.
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Bibliographic InfoArticle provided by Elsevier in its journal International Review of Financial Analysis.
Volume (Year): 18 (2009)
Issue (Month): 4 (September)
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Web page: http://www.elsevier.com/locate/inca/620166
Nonstationary differences/increments ARCH GARCH Martingales Efficient market hypothesis Volatility;
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