U.S. stocks were on track for their fifth straight week of gains as crude oil climbed to its best level of the year on hopes of a production freeze. The S&P 500 turned positive for the year, following the example the Dow set a day earlier. The U.S. consumer feels less sure of the economy, according to the latest read from the University of Michigan. Consumer sentiment declined on expectations gas prices would rise this year and general economic conditions would deteriorate. Aeropostale (ARO) nearly halved in value after broaching the possibility of a sale. The teen retailer reported another quarterly loss, while sales slumped 16% over its holiday season. TheStreet's Keris Lahiff reports from Wall Street.