Copper is poised for its best quarter since 2010, helped by optimism over a stronger-than-expected demand rebound in top consumer China and mounting supply concerns in South America. The metal used in everything from automobiles to electronics has surged 21% this quarter, and climbed above $6,000 a metric ton last week for the first time since the Covid-19 outbreak became a global pandemic. Prices have rallied steadily over the past three months, fueled by sentiment over consumption prospects as first China and then other large economies began to ease lockdowns. While a new wave of infections adds risk to the demand ... (full story)