Benedicte Gravrand, Opalesque Geneva:

The commodities markets jittered during the first week of May, as aggressive sell-offs drove prices down, especially those of oil, gold and silver. According to the Kudlow Report on CNBC, shares on U.S. markets dropped about 1.5% for the week (although they went up a bit on Friday), silver dropped 26%, oil 5% and gold and copper 5% - and