Cochran, Steven J.; Mansur, Iqbal; Odusami, Babatunde - In: Journal of Economics and Business 64 (2012) 4, pp. 287-305
This study examines the returns and the long-memory properties of the return volatilities of four metals – copper, gold, platinum, and silver. Daily returns for the January 4, 1999 to March 10, 2009 period are used. Three key issues are addressed: (1) whether the volatility processes exhibit...