Traders work on the floor of the New York Stock Exchange at the end of the trading day on April 2, 2013 in New York City. - 

The aluminum maker Alcoa kicked off corporate earnings season last night with a better than expected report. Alcoa kept its forecast steady at 7 percent growth in aluminum demand this year.

Juli Niemann, analyst with Smith, Moore & Company, joins Marketplace Morning Report host Jeremy Hobson to discuss the latest earnings reports and what they signal about the economy.