Aug. 8 (Bloomberg) -- Copper and crude oil led a decline in commodities on concern that slower global economic growth will curb demand for raw materials.
Copper headed for its biggest weekly drop since March, crude oil fell to the lowest compared with closing prices since May and silver reached its cheapest since January. Italy's second-quarter gross domestic product unexpectedly shrank, the statistics office in Rome said today. Japan's economy probably contracted in the three months ended June, according to the median estimate of 25 economists surveyed by Bloomberg News.
``People understand that we might face a difficult two or three quarters ahead of us,'' said Christoph Eibl, who helps manage more than $1 billion of commodities at Tiberius Asset Management AG in Zug, Switzerland. ``Industrial-related commodities will not outperform.''