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Time varying market efficiency of the GCC stock markets
(
Elsevier B.V.
, 2016 , Article)
This paper investigates the time-varying levels of weak-form market efficiency for the GCC stock markets over the period spanning from May 2005 to September 2013. We use two empirical approaches: (1) the generalized ...
True or spurious long memory in volatility: Further evidence on the energy futures markets
(
Elsevier
, 2014 , Article)
The main goal of this paper is to investigate whether the long memory behavior observed in many volatility energy futures markets series is a spurious behavior or not. For this purpose, we employ a wide variety of advanced ...