It has not been a good week for commodities. While oil’s latest decline was in the spotlight, copper plunged well below $6,000 a ton for the first time since 2009. That left the Bloomberg Commodity index at a 12-year low, MoneyWeek reported. The ongoing falls in raw-materials prices rattled equities and bonds. US ten-year Treasury yields fell to their lowest level since May 2013 as prices rose.
