Market Insider

Markets watching to see why copper getting scorched

Wary financial markets are watching the decline in copper, to see if the red metal is acting as a fire alarm for the global economy.

With a quiet economic calendar Wednesday, the Treasury's 10-year auction could also take on a higher profile than normal, especially ahead of next week's Fed meeting.

Stocks wobbled Tuesday, as concerns swirled that the economy is not growing fast enough, and traders were most worried that China could be stumbling. The Shanghai stock market was higher overnight but U.S. stocks fell with copper, a bellwether on the Chinese economy.